/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=DEEPEST --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_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:38:14,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:38:14,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:38:14,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:38:14,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:38:14,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:38:14,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:38:14,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:38:14,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:38:14,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:38:14,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:38:14,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:38:14,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:38:15,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:38:15,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:38:15,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:38:15,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:38:15,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:38:15,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:38:15,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:38:15,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:38:15,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:38:15,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:38:15,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:38:15,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:38:15,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:38:15,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:38:15,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:38:15,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:38:15,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:38:15,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:38:15,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:38:15,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:38:15,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:38:15,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:38:15,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:38:15,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:38:15,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:38:15,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:38:15,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:38:15,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:38:15,069 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 [2020-10-27 16:38:15,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:38:15,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:38:15,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:38:15,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:38:15,122 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:38:15,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:38:15,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:38:15,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:38:15,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:38:15,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:38:15,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:38:15,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:38:15,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:38:15,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:38:15,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:38:15,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:38:15,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:38:15,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:38:15,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:38:15,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:38:15,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:38:15,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:38:15,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:38:15,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:38:15,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:38:15,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:38:15,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:38:15,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:38:15,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:38:15,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:38:15,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:38:15,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:38:15,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:38:15,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:38:15,611 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:38:15,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label59.c [2020-10-27 16:38:15,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44666bfcc/45e9d63eac484ddbbe91039f243ffc6a/FLAGbb57a6487 [2020-10-27 16:38:16,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:38:16,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label59.c [2020-10-27 16:38:16,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44666bfcc/45e9d63eac484ddbbe91039f243ffc6a/FLAGbb57a6487 [2020-10-27 16:38:17,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44666bfcc/45e9d63eac484ddbbe91039f243ffc6a [2020-10-27 16:38:17,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:38:17,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:38:17,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:38:17,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:38:17,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:38:17,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:17" (1/1) ... [2020-10-27 16:38:17,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290a9412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:17, skipping insertion in model container [2020-10-27 16:38:17,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:17" (1/1) ... [2020-10-27 16:38:17,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:38:17,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:38:19,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:38:19,537 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:38:20,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:38:20,708 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:38:20,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20 WrapperNode [2020-10-27 16:38:20,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:38:20,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:38:20,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:38:20,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:38:20,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (1/1) ... [2020-10-27 16:38:20,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (1/1) ... [2020-10-27 16:38:20,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (1/1) ... [2020-10-27 16:38:20,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (1/1) ... [2020-10-27 16:38:21,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (1/1) ... [2020-10-27 16:38:21,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (1/1) ... [2020-10-27 16:38:21,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (1/1) ... [2020-10-27 16:38:21,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:38:21,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:38:21,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:38:21,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:38:21,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (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 [2020-10-27 16:38:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:38:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:38:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:38:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:38:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:38:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:38:21,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:38:21,426 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:38:21,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:38:21,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:38:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:38:21,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:38:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:38:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:38:21,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:38:21,429 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:38:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:38:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:38:30,382 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:38:30,382 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:38:30,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:30 BoogieIcfgContainer [2020-10-27 16:38:30,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:38:30,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:38:30,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:38:30,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:38:30,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:38:17" (1/3) ... [2020-10-27 16:38:30,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8876c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:30, skipping insertion in model container [2020-10-27 16:38:30,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:20" (2/3) ... [2020-10-27 16:38:30,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8876c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:30, skipping insertion in model container [2020-10-27 16:38:30,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:30" (3/3) ... [2020-10-27 16:38:30,396 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label59.c [2020-10-27 16:38:30,408 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:38:30,414 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:38:30,428 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:38:30,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:38:30,461 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:38:30,462 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:38:30,462 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:38:30,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:38:30,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:38:30,462 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:38:30,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:38:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:38:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-27 16:38:30,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:38:30,562 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] [2020-10-27 16:38:30,563 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:38:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:38:30,570 INFO L82 PathProgramCache]: Analyzing trace with hash -786993316, now seen corresponding path program 1 times [2020-10-27 16:38:30,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:38:30,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908103028] [2020-10-27 16:38:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:38:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:38:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:36,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:38:36,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 975 [2020-10-27 16:38:36,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:38:36,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5222 [2020-10-27 16:38:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:38:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:38:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:38:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:38:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:38:41,598 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 16:38:41,863 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 16:38:42,126 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-10-27 16:38:42,421 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-10-27 16:38:42,698 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-10-27 16:38:42,949 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-10-27 16:38:43,204 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-27 16:38:43,457 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-27 16:38:43,618 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 16:38:43,772 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 16:38:43,932 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 16:38:44,324 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2020-10-27 16:38:44,602 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2020-10-27 16:38:44,937 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 62 [2020-10-27 16:38:45,186 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:38:45,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:38:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:38:45,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:38:45,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:38:45,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:38:45,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 16:38:45,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:38:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:38:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:38:45,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:38:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:38:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:38:59,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908103028] [2020-10-27 16:38:59,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:38:59,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:38:59,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934883008] [2020-10-27 16:38:59,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:38:59,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:38:59,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:38:59,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:38:59,684 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:39:00,131 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 16:39:00,901 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 199 [2020-10-27 16:39:01,614 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 198 [2020-10-27 16:39:02,371 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 202 [2020-10-27 16:39:06,861 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 244 DAG size of output: 202 [2020-10-27 16:39:10,559 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 249 DAG size of output: 212 [2020-10-27 16:39:13,317 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 192 [2020-10-27 16:39:14,154 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 204 [2020-10-27 16:39:15,259 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 203 [2020-10-27 16:39:25,755 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 196 [2020-10-27 16:39:26,533 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 206 [2020-10-27 16:39:29,730 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 204 [2020-10-27 16:39:37,931 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 197 [2020-10-27 16:39:38,884 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 206 [2020-10-27 16:39:41,866 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 202 [2020-10-27 16:39:56,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:39:56,891 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:39:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:39:56,898 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 957 [2020-10-27 16:39:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:39:56,955 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:39:56,956 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:39:56,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:39:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:39:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:39:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:39:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:39:57,158 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 957 [2020-10-27 16:39:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:39:57,161 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:39:57,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:39:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:39:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-27 16:39:57,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:39:57,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:39:57,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:39:57,211 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:39:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:39:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1947133901, now seen corresponding path program 1 times [2020-10-27 16:39:57,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:39:57,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609977419] [2020-10-27 16:39:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:39:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:39:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:39:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:02,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:02,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-27 16:40:02,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:40:02,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-27 16:40:02,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:40:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:40:02,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 963 [2020-10-27 16:40:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:03,522 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:40:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:40:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:03,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:03,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:40:03,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:03,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:40:03,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:40:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:40:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:40:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:40:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:03,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:03,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:40:03,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 16:40:03,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:40:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:40:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:40:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:40:04,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609977419] [2020-10-27 16:40:04,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:40:04,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:40:04,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454450520] [2020-10-27 16:40:04,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:40:04,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:40:04,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:40:04,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:40:04,990 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 5 states. [2020-10-27 16:40:05,480 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:40:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:40:22,479 INFO L93 Difference]: Finished difference Result 4399 states and 7410 transitions. [2020-10-27 16:40:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:40:22,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1027 [2020-10-27 16:40:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:40:22,501 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:40:22,501 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:40:22,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:40:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:40:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3120. [2020-10-27 16:40:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-27 16:40:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4523 transitions. [2020-10-27 16:40:22,606 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4523 transitions. Word has length 1027 [2020-10-27 16:40:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:40:22,608 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 4523 transitions. [2020-10-27 16:40:22,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:40:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4523 transitions. [2020-10-27 16:40:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2020-10-27 16:40:22,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:40:22,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:40:22,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:40:22,627 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:40:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:40:22,628 INFO L82 PathProgramCache]: Analyzing trace with hash 721668307, now seen corresponding path program 1 times [2020-10-27 16:40:22,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:40:22,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238583767] [2020-10-27 16:40:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:40:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:22,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:27,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:27,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-27 16:40:27,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:40:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 16:40:27,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:40:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:40:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:40:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:28,519 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:40:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:40:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:28,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:28,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:40:28,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 16:40:28,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:40:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:40:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:40:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:28,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:40:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:28,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:28,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:40:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 16:40:28,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:28,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:40:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:40:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:40:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:40:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:40:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:28,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:28,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:28,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:40:28,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 16:40:28,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:40:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:40:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:40:28,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:40:29,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238583767] [2020-10-27 16:40:29,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:40:29,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:40:29,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625969905] [2020-10-27 16:40:29,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:40:29,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:40:29,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:40:29,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:40:29,847 INFO L87 Difference]: Start difference. First operand 3120 states and 4523 transitions. Second operand 7 states. [2020-10-27 16:40:30,422 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:40:31,538 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 16:40:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:40:49,489 INFO L93 Difference]: Finished difference Result 7698 states and 11914 transitions. [2020-10-27 16:40:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:40:49,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1040 [2020-10-27 16:40:49,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:40:49,523 INFO L225 Difference]: With dead ends: 7698 [2020-10-27 16:40:49,523 INFO L226 Difference]: Without dead ends: 5338 [2020-10-27 16:40:49,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:40:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2020-10-27 16:40:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5267. [2020-10-27 16:40:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5267 states. [2020-10-27 16:40:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 7010 transitions. [2020-10-27 16:40:49,731 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 7010 transitions. Word has length 1040 [2020-10-27 16:40:49,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:40:49,732 INFO L481 AbstractCegarLoop]: Abstraction has 5267 states and 7010 transitions. [2020-10-27 16:40:49,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:40:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 7010 transitions. [2020-10-27 16:40:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2020-10-27 16:40:49,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:40:49,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:40:49,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:40:49,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:40:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:40:49,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1810263648, now seen corresponding path program 1 times [2020-10-27 16:40:49,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:40:49,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203012135] [2020-10-27 16:40:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:40:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:50,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:52,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:55,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:55,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1065 [2020-10-27 16:40:55,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:40:55,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5174 [2020-10-27 16:40:55,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 16:40:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:40:55,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 16:40:55,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:55,771 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:40:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:40:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:55,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:55,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:55,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:40:55,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 16:40:55,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:40:55,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:40:55,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:40:55,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:40:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:55,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:56,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:56,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:40:56,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:56,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 16:40:56,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:56,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:40:56,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:40:56,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 16:40:56,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:40:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:40:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:40:56,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:40:56,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:40:56,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:40:56,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 16:40:56,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:40:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:40:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:40:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:40:56,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:40:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 16:40:56,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203012135] [2020-10-27 16:40:56,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:40:56,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:40:56,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106777510] [2020-10-27 16:40:56,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:40:56,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:40:56,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:40:56,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:40:56,936 INFO L87 Difference]: Start difference. First operand 5267 states and 7010 transitions. Second operand 8 states. [2020-10-27 16:40:57,143 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:41:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:41:17,988 INFO L93 Difference]: Finished difference Result 14453 states and 19937 transitions. [2020-10-27 16:41:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 16:41:17,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1043 [2020-10-27 16:41:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:41:18,044 INFO L225 Difference]: With dead ends: 14453 [2020-10-27 16:41:18,044 INFO L226 Difference]: Without dead ends: 9946 [2020-10-27 16:41:18,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:41:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9946 states. [2020-10-27 16:41:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9946 to 9899. [2020-10-27 16:41:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9899 states. [2020-10-27 16:41:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9899 states to 9899 states and 13556 transitions. [2020-10-27 16:41:18,377 INFO L78 Accepts]: Start accepts. Automaton has 9899 states and 13556 transitions. Word has length 1043 [2020-10-27 16:41:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:41:18,377 INFO L481 AbstractCegarLoop]: Abstraction has 9899 states and 13556 transitions. [2020-10-27 16:41:18,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:41:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 9899 states and 13556 transitions. [2020-10-27 16:41:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2020-10-27 16:41:18,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:41:18,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:41:18,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:41:18,416 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:41:18,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:41:18,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1020405116, now seen corresponding path program 1 times [2020-10-27 16:41:18,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:41:18,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849407008] [2020-10-27 16:41:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:41:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:41:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:23,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:41:23,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1080 [2020-10-27 16:41:23,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:41:23,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5365 [2020-10-27 16:41:23,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:41:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:41:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 16:41:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:41:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:41:24,364 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:41:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:41:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:41:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:24,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:41:24,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:41:24,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:41:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:41:24,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:41:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:41:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:41:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:41:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:41:24,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:41:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:41:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:24,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:41:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:41:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:41:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 16:41:24,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:41:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:41:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:41:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:41:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:41:24,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:41:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:41:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:41:24,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:41:24,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:41:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 16:41:24,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:41:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:41:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:41:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:41:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:41:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 16:41:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:41:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:24,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:41:24,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:41:24,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:41:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 16:41:24,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:41:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:41:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:41:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:41:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:41:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 16:41:25,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849407008] [2020-10-27 16:41:25,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:41:25,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:41:25,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73052328] [2020-10-27 16:41:25,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:41:25,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:41:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:41:25,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:41:25,358 INFO L87 Difference]: Start difference. First operand 9899 states and 13556 transitions. Second operand 7 states. [2020-10-27 16:41:26,011 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:41:26,298 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:41:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:41:50,398 INFO L93 Difference]: Finished difference Result 28920 states and 42545 transitions. [2020-10-27 16:41:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:41:50,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1056 [2020-10-27 16:41:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:41:50,499 INFO L225 Difference]: With dead ends: 28920 [2020-10-27 16:41:50,499 INFO L226 Difference]: Without dead ends: 19781 [2020-10-27 16:41:50,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:41:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19781 states. [2020-10-27 16:41:51,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19781 to 19369. [2020-10-27 16:41:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19369 states. [2020-10-27 16:41:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19369 states to 19369 states and 26228 transitions. [2020-10-27 16:41:51,135 INFO L78 Accepts]: Start accepts. Automaton has 19369 states and 26228 transitions. Word has length 1056 [2020-10-27 16:41:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:41:51,136 INFO L481 AbstractCegarLoop]: Abstraction has 19369 states and 26228 transitions. [2020-10-27 16:41:51,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:41:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 19369 states and 26228 transitions. [2020-10-27 16:41:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-27 16:41:51,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:41:51,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:41:51,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:41:51,211 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:41:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:41:51,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1957669943, now seen corresponding path program 1 times [2020-10-27 16:41:51,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:41:51,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607419110] [2020-10-27 16:41:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:41:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:41:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:41:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking...