/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_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:29:01,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:29:01,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:29:01,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:29:01,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:29:01,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:29:01,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:29:01,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:29:01,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:29:01,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:29:01,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:29:01,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:29:01,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:29:01,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:29:01,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:29:01,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:29:01,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:29:01,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:29:01,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:29:01,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:29:01,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:29:01,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:29:01,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:29:01,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:29:01,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:29:01,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:29:01,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:29:01,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:29:01,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:29:01,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:29:01,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:29:01,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:29:01,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:29:01,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:29:01,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:29:01,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:29:01,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:29:01,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:29:01,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:29:02,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:29:02,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:29:02,026 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 16:29:02,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:29:02,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:29:02,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:29:02,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:29:02,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:29:02,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:29:02,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:29:02,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:29:02,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:29:02,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:29:02,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:29:02,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:29:02,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:29:02,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:29:02,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:29:02,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:29:02,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:29:02,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:29:02,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:29:02,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:29:02,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:29:02,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:29:02,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:29:02,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:29:02,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:29:02,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:29:02,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:29:02,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:29:02,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:29:02,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:29:02,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:29:02,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:29:02,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:29:02,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:29:02,560 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:29:02,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label23.c [2020-10-27 16:29:02,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25c0bad1/172e3a3109b14ac0a86e2303055f9fc5/FLAGed8b834ef [2020-10-27 16:29:03,809 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:29:03,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label23.c [2020-10-27 16:29:03,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25c0bad1/172e3a3109b14ac0a86e2303055f9fc5/FLAGed8b834ef [2020-10-27 16:29:04,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25c0bad1/172e3a3109b14ac0a86e2303055f9fc5 [2020-10-27 16:29:04,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:29:04,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:29:04,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:29:04,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:29:04,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:29:04,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:29:04" (1/1) ... [2020-10-27 16:29:04,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72fe7e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:04, skipping insertion in model container [2020-10-27 16:29:04,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:29:04" (1/1) ... [2020-10-27 16:29:04,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:29:04,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:29:06,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:29:06,551 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:29:07,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:29:07,853 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:29:07,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07 WrapperNode [2020-10-27 16:29:07,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:29:07,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:29:07,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:29:07,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:29:07,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (1/1) ... [2020-10-27 16:29:07,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (1/1) ... [2020-10-27 16:29:08,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (1/1) ... [2020-10-27 16:29:08,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (1/1) ... [2020-10-27 16:29:08,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (1/1) ... [2020-10-27 16:29:08,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (1/1) ... [2020-10-27 16:29:08,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (1/1) ... [2020-10-27 16:29:08,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:29:08,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:29:08,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:29:08,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:29:08,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (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 16:29:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:29:08,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:29:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:29:08,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:29:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:29:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:29:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:29:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:29:08,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:29:08,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:29:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:29:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:29:08,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:29:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:29:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:29:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:29:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:29:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:29:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:29:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:29:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:29:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:29:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:29:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:29:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:29:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:29:08,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:29:16,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:29:16,871 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:29:16,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:29:16 BoogieIcfgContainer [2020-10-27 16:29:16,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:29:16,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:29:16,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:29:16,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:29:16,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:29:04" (1/3) ... [2020-10-27 16:29:16,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e347de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:29:16, skipping insertion in model container [2020-10-27 16:29:16,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:29:07" (2/3) ... [2020-10-27 16:29:16,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e347de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:29:16, skipping insertion in model container [2020-10-27 16:29:16,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:29:16" (3/3) ... [2020-10-27 16:29:16,890 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label23.c [2020-10-27 16:29:16,902 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:29:16,909 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:29:16,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:29:16,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:29:16,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:29:16,973 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:29:16,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:29:16,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:29:16,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:29:16,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:29:16,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:29:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:29:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-27 16:29:17,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:29:17,100 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] [2020-10-27 16:29:17,100 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:29:17,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:29:17,108 INFO L82 PathProgramCache]: Analyzing trace with hash -45380576, now seen corresponding path program 1 times [2020-10-27 16:29:17,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:29:17,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14240452] [2020-10-27 16:29:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:29:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:23,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:23,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-27 16:29:23,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:29:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-27 16:29:23,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:29:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:29:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:29:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 16:29:27,103 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:29:27,337 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:29:27,600 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:29:27,877 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-27 16:29:28,111 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:29:28,344 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:29:28,590 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:29:28,806 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 16:29:29,025 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 16:29:29,220 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 16:29:29,873 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:29:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:29:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:29:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:29:29,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:29:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:29:29,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:29:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 16:29:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:29:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:29:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:29:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:29:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:29:43,040 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 16:29:43,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14240452] [2020-10-27 16:29:43,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:29:43,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:29:43,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715913560] [2020-10-27 16:29:43,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:29:43,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:29:43,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:29:43,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:29:43,070 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:29:43,626 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 16:29:44,733 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 197 [2020-10-27 16:29:45,833 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 205 DAG size of output: 197 [2020-10-27 16:29:47,026 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 218 DAG size of output: 205 [2020-10-27 16:29:51,879 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 239 DAG size of output: 204 [2020-10-27 16:29:56,091 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 242 DAG size of output: 203 [2020-10-27 16:29:59,048 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 194 [2020-10-27 16:30:00,185 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 227 DAG size of output: 200 [2020-10-27 16:30:01,584 WARN L193 SmtUtils]: Spent 989.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 199 [2020-10-27 16:30:12,259 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 192 [2020-10-27 16:30:13,340 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 197 [2020-10-27 16:30:16,808 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 196 [2020-10-27 16:30:25,241 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 190 [2020-10-27 16:30:26,395 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 213 DAG size of output: 194 [2020-10-27 16:30:29,598 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 209 DAG size of output: 192 [2020-10-27 16:30:43,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:30:43,224 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:30:43,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:30:43,226 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 982 [2020-10-27 16:30:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:30:43,276 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:30:43,276 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:30:43,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:30:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:30:43,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:30:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:30:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:30:43,487 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 982 [2020-10-27 16:30:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:30:43,490 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:30:43,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:30:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:30:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2020-10-27 16:30:43,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:30:43,535 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, 1, 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 16:30:43,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:30:43,536 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:30:43,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:30:43,538 INFO L82 PathProgramCache]: Analyzing trace with hash 614708009, now seen corresponding path program 1 times [2020-10-27 16:30:43,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:30:43,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941809247] [2020-10-27 16:30:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:30:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:48,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:48,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1072 [2020-10-27 16:30:48,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:30:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 16:30:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:30:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:30:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 988 [2020-10-27 16:30:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:50,440 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:30:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:30:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:50,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:50,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:30:50,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:50,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:30:50,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:30:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:30:50,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:30:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:30:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:30:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:30:50,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:30:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 16:30:50,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:30:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:30:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:30:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:30:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:30:51,769 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 16:30:51,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941809247] [2020-10-27 16:30:51,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:30:51,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:30:51,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980025882] [2020-10-27 16:30:51,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:30:51,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:30:51,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:30:51,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:30:51,775 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 6 states. [2020-10-27 16:30:52,445 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:31:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:31:11,876 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:31:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:31:11,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1052 [2020-10-27 16:31:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:31:11,900 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:31:11,900 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:31:11,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:31:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:31:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:31:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:31:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:31:12,002 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1052 [2020-10-27 16:31:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:31:12,005 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:31:12,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:31:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:31:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2020-10-27 16:31:12,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:31:12,025 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 16:31:12,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:31:12,025 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:31:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:31:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash 708591185, now seen corresponding path program 1 times [2020-10-27 16:31:12,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:31:12,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268105816] [2020-10-27 16:31:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:31:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:12,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:17,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:17,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-27 16:31:17,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:31:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-27 16:31:17,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:31:17,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:31:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:17,803 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:31:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:31:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:17,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:17,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:31:17,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:31:17,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:31:17,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:31:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:17,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:31:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:31:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 16:31:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:31:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:31:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:18,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:31:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:18,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:18,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:31:18,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 16:31:18,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:31:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:31:18,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:31:18,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268105816] [2020-10-27 16:31:18,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:31:18,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:31:18,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352143628] [2020-10-27 16:31:18,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:31:18,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:31:18,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:31:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:31:18,968 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 7 states. [2020-10-27 16:31:19,660 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:31:20,719 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:31:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:31:43,169 INFO L93 Difference]: Finished difference Result 7721 states and 12250 transitions. [2020-10-27 16:31:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:31:43,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1061 [2020-10-27 16:31:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:31:43,204 INFO L225 Difference]: With dead ends: 7721 [2020-10-27 16:31:43,204 INFO L226 Difference]: Without dead ends: 5393 [2020-10-27 16:31:43,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:31:43,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2020-10-27 16:31:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5336. [2020-10-27 16:31:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5336 states. [2020-10-27 16:31:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 7456 transitions. [2020-10-27 16:31:43,430 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 7456 transitions. Word has length 1061 [2020-10-27 16:31:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:31:43,431 INFO L481 AbstractCegarLoop]: Abstraction has 5336 states and 7456 transitions. [2020-10-27 16:31:43,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:31:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 7456 transitions. [2020-10-27 16:31:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2020-10-27 16:31:43,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:31:43,463 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, 1, 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 16:31:43,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:31:43,464 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:31:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:31:43,465 INFO L82 PathProgramCache]: Analyzing trace with hash -825559415, now seen corresponding path program 1 times [2020-10-27 16:31:43,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:31:43,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501610550] [2020-10-27 16:31:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:31:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:48,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1087 [2020-10-27 16:31:48,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:31:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5159 [2020-10-27 16:31:48,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:31:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:31:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:49,388 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:31:49,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:31:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:31:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:31:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:31:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:31:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:49,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:31:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:49,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:31:49,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:49,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 16:31:49,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:31:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:31:49,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:31:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:49,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:31:49,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 16:31:49,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:31:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:31:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:31:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:31:50,460 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 16:31:50,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501610550] [2020-10-27 16:31:50,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:31:50,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:31:50,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850391180] [2020-10-27 16:31:50,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:31:50,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:31:50,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:31:50,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:31:50,463 INFO L87 Difference]: Start difference. First operand 5336 states and 7456 transitions. Second operand 7 states. [2020-10-27 16:31:51,164 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:31:52,237 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 16:32:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:32:13,303 INFO L93 Difference]: Finished difference Result 12437 states and 17686 transitions. [2020-10-27 16:32:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 16:32:13,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1065 [2020-10-27 16:32:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:32:13,347 INFO L225 Difference]: With dead ends: 12437 [2020-10-27 16:32:13,348 INFO L226 Difference]: Without dead ends: 7861 [2020-10-27 16:32:13,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:32:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2020-10-27 16:32:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 7646. [2020-10-27 16:32:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7646 states. [2020-10-27 16:32:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 10269 transitions. [2020-10-27 16:32:13,626 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 10269 transitions. Word has length 1065 [2020-10-27 16:32:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:32:13,627 INFO L481 AbstractCegarLoop]: Abstraction has 7646 states and 10269 transitions. [2020-10-27 16:32:13,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:32:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 10269 transitions. [2020-10-27 16:32:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-27 16:32:13,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:13,667 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, 1, 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 16:32:13,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:32:13,668 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:13,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1775485786, now seen corresponding path program 1 times [2020-10-27 16:32:13,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:13,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789629054] [2020-10-27 16:32:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:32:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:18,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:18,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1090 [2020-10-27 16:32:18,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:32:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 16:32:18,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 16:32:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:32:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 16:32:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:19,388 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:32:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:32:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:19,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:19,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:32:19,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:19,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 16:32:19,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:32:19,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:32:19,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:32:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:32:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:19,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:19,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:32:19,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 16:32:19,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:32:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:32:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 16:32:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:32:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:19,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:19,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:32:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 16:32:19,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:32:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:32:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:32:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:21,194 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 16:32:21,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789629054] [2020-10-27 16:32:21,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:32:21,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:32:21,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687252501] [2020-10-27 16:32:21,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:32:21,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:32:21,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:32:21,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:32:21,197 INFO L87 Difference]: Start difference. First operand 7646 states and 10269 transitions. Second operand 8 states. [2020-10-27 16:32:21,511 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:32:22,669 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-27 16:32:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:32:46,297 INFO L93 Difference]: Finished difference Result 22432 states and 31917 transitions. [2020-10-27 16:32:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 16:32:46,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1068 [2020-10-27 16:32:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:32:46,385 INFO L225 Difference]: With dead ends: 22432 [2020-10-27 16:32:46,386 INFO L226 Difference]: Without dead ends: 15546 [2020-10-27 16:32:46,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-27 16:32:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15546 states. [2020-10-27 16:32:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15546 to 14553. [2020-10-27 16:32:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14553 states. [2020-10-27 16:32:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14553 states to 14553 states and 19068 transitions. [2020-10-27 16:32:47,049 INFO L78 Accepts]: Start accepts. Automaton has 14553 states and 19068 transitions. Word has length 1068 [2020-10-27 16:32:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:32:47,050 INFO L481 AbstractCegarLoop]: Abstraction has 14553 states and 19068 transitions. [2020-10-27 16:32:47,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:32:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 14553 states and 19068 transitions. [2020-10-27 16:32:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2020-10-27 16:32:47,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:47,114 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, 1, 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 16:32:47,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:32:47,114 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:47,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1726420059, now seen corresponding path program 1 times [2020-10-27 16:32:47,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:47,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836137238] [2020-10-27 16:32:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:32:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking...