/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=SHALLOWEST --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_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:28:41,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:28:41,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:28:41,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:28:41,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:28:41,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:28:41,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:28:41,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:28:41,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:28:41,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:28:41,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:28:41,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:28:41,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:28:41,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:28:41,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:28:41,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:28:41,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:28:41,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:28:41,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:28:41,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:28:41,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:28:41,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:28:41,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:28:41,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:28:41,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:28:41,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:28:41,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:28:41,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:28:41,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:28:41,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:28:41,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:28:41,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:28:41,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:28:41,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:28:41,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:28:41,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:28:41,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:28:41,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:28:41,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:28:41,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:28:41,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:28:41,105 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 [2020-10-26 21:28:41,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:28:41,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:28:41,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:28:41,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:28:41,136 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:28:41,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:28:41,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:28:41,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:28:41,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:28:41,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:28:41,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:28:41,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:28:41,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:28:41,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:28:41,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:28:41,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:28:41,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:28:41,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:28:41,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:28:41,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:28:41,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:28:41,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:28:41,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:28:41,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:28:41,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:28:41,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:28:41,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:28:41,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:28:41,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:28:41,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:28:41,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:28:41,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:28:41,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:28:41,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:28:41,596 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:28:41,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label12.c [2020-10-26 21:28:41,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcec7354a/f7308a81d55247ab808379f96c8f00c1/FLAG98c31f52c [2020-10-26 21:28:42,902 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:28:42,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label12.c [2020-10-26 21:28:42,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcec7354a/f7308a81d55247ab808379f96c8f00c1/FLAG98c31f52c [2020-10-26 21:28:43,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcec7354a/f7308a81d55247ab808379f96c8f00c1 [2020-10-26 21:28:43,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:28:43,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:28:43,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:28:43,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:28:43,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:28:43,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:28:43" (1/1) ... [2020-10-26 21:28:43,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649a1f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:43, skipping insertion in model container [2020-10-26 21:28:43,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:28:43" (1/1) ... [2020-10-26 21:28:43,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:28:43,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:28:45,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:28:45,679 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:28:46,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:28:46,874 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:28:46,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46 WrapperNode [2020-10-26 21:28:46,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:28:46,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:28:46,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:28:46,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:28:46,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (1/1) ... [2020-10-26 21:28:46,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (1/1) ... [2020-10-26 21:28:47,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (1/1) ... [2020-10-26 21:28:47,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (1/1) ... [2020-10-26 21:28:47,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (1/1) ... [2020-10-26 21:28:47,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (1/1) ... [2020-10-26 21:28:47,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (1/1) ... [2020-10-26 21:28:47,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:28:47,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:28:47,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:28:47,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:28:47,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (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 [2020-10-26 21:28:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:28:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:28:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:28:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:28:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:28:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:28:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:28:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:28:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:28:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:28:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:28:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:28:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:28:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:28:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:28:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:28:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:28:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:28:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:28:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:28:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:28:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:28:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:28:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:28:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:28:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:28:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:28:55,881 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:28:55,881 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:28:55,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:28:55 BoogieIcfgContainer [2020-10-26 21:28:55,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:28:55,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:28:55,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:28:55,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:28:55,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:28:43" (1/3) ... [2020-10-26 21:28:55,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6102e119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:28:55, skipping insertion in model container [2020-10-26 21:28:55,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:46" (2/3) ... [2020-10-26 21:28:55,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6102e119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:28:55, skipping insertion in model container [2020-10-26 21:28:55,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:28:55" (3/3) ... [2020-10-26 21:28:55,896 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label12.c [2020-10-26 21:28:55,910 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:28:55,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:28:55,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:28:55,968 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:28:55,968 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:28:55,968 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:28:55,969 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:28:55,969 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:28:55,969 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:28:55,969 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:28:55,969 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:28:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-26 21:28:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-26 21:28:56,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:28:56,087 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] [2020-10-26 21:28:56,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:28:56,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:28:56,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1438978004, now seen corresponding path program 1 times [2020-10-26 21:28:56,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:28:56,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486308073] [2020-10-26 21:28:56,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:28:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:28:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:28:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:29:02,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:29:02,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-26 21:29:02,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:29:02,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 21:29:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:29:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 21:29:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:29:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 954 [2020-10-26 21:29:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 21:29:03,685 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:29:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:29:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:29:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:29:03,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:29:03,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:29:03,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:29:03,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:29:03,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:29:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:29:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:29:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:29:03,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:29:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:29:05,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486308073] [2020-10-26 21:29:05,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:29:05,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 21:29:05,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495075180] [2020-10-26 21:29:05,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 21:29:05,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:29:05,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 21:29:05,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:29:05,711 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-26 21:29:06,002 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:29:06,460 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 21:29:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:29:28,910 INFO L93 Difference]: Finished difference Result 4885 states and 9214 transitions. [2020-10-26 21:29:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 21:29:28,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 945 [2020-10-26 21:29:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:29:28,968 INFO L225 Difference]: With dead ends: 4885 [2020-10-26 21:29:28,968 INFO L226 Difference]: Without dead ends: 3498 [2020-10-26 21:29:28,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:29:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2020-10-26 21:29:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 3404. [2020-10-26 21:29:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-10-26 21:29:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5931 transitions. [2020-10-26 21:29:29,243 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5931 transitions. Word has length 945 [2020-10-26 21:29:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:29:29,246 INFO L481 AbstractCegarLoop]: Abstraction has 3404 states and 5931 transitions. [2020-10-26 21:29:29,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 21:29:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5931 transitions. [2020-10-26 21:29:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-26 21:29:29,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:29:29,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:29:29,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:29:29,301 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:29:29,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:29:29,302 INFO L82 PathProgramCache]: Analyzing trace with hash 73849803, now seen corresponding path program 1 times [2020-10-26 21:29:29,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:29:29,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217303769] [2020-10-26 21:29:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:29:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:29:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:29:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:29:34,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:29:34,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-26 21:29:34,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:29:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-26 21:29:34,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:29:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:29:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:29:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:29:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:29:35,025 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:29:35,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:29:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:29:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:29:35,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:29:35,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:29:35,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:29:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 21:29:35,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:29:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:29:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:29:35,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:29:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:29:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:29:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:29:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:29:35,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:29:35,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:29:35,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:29:35,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 21:29:35,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:29:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:29:35,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:29:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:29:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:29:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:29:35,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217303769] [2020-10-26 21:29:35,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:29:35,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:29:35,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893055815] [2020-10-26 21:29:35,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:29:35,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:29:35,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:29:35,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:29:35,723 INFO L87 Difference]: Start difference. First operand 3404 states and 5931 transitions. Second operand 7 states. [2020-10-26 21:29:35,918 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:29:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:29:55,589 INFO L93 Difference]: Finished difference Result 10323 states and 18095 transitions. [2020-10-26 21:29:55,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:29:55,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 953 [2020-10-26 21:29:55,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:29:55,629 INFO L225 Difference]: With dead ends: 10323 [2020-10-26 21:29:55,629 INFO L226 Difference]: Without dead ends: 6925 [2020-10-26 21:29:55,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 21:29:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6925 states. [2020-10-26 21:29:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6925 to 6871. [2020-10-26 21:29:55,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6871 states. [2020-10-26 21:29:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6871 states to 6871 states and 11982 transitions. [2020-10-26 21:29:55,872 INFO L78 Accepts]: Start accepts. Automaton has 6871 states and 11982 transitions. Word has length 953 [2020-10-26 21:29:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:29:55,872 INFO L481 AbstractCegarLoop]: Abstraction has 6871 states and 11982 transitions. [2020-10-26 21:29:55,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:29:55,872 INFO L276 IsEmpty]: Start isEmpty. Operand 6871 states and 11982 transitions. [2020-10-26 21:29:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-26 21:29:55,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:29:55,903 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:29:55,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:29:55,903 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:29:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:29:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1172787102, now seen corresponding path program 1 times [2020-10-26 21:29:55,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:29:55,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727517009] [2020-10-26 21:29:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:29:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:29:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:29:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:01,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:01,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 980 [2020-10-26 21:30:01,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:30:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 21:30:01,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:30:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:30:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 21:30:01,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:01,423 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:30:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:30:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:01,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:01,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:01,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:30:01,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:30:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:30:01,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:30:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:30:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:30:01,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:01,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:30:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:01,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:01,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:01,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:30:01,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:30:01,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 21:30:01,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:01,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:30:01,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:30:01,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:30:01,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:30:02,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727517009] [2020-10-26 21:30:02,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:30:02,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:30:02,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150661348] [2020-10-26 21:30:02,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:30:02,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:30:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:30:02,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:30:02,317 INFO L87 Difference]: Start difference. First operand 6871 states and 11982 transitions. Second operand 7 states. [2020-10-26 21:30:02,520 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:30:03,390 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 21:30:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:30:20,667 INFO L93 Difference]: Finished difference Result 20677 states and 36843 transitions. [2020-10-26 21:30:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:30:20,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2020-10-26 21:30:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:30:20,747 INFO L225 Difference]: With dead ends: 20677 [2020-10-26 21:30:20,747 INFO L226 Difference]: Without dead ends: 13812 [2020-10-26 21:30:20,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:30:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13812 states. [2020-10-26 21:30:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13812 to 13520. [2020-10-26 21:30:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13520 states. [2020-10-26 21:30:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 21774 transitions. [2020-10-26 21:30:21,238 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 21774 transitions. Word has length 960 [2020-10-26 21:30:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:30:21,238 INFO L481 AbstractCegarLoop]: Abstraction has 13520 states and 21774 transitions. [2020-10-26 21:30:21,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:30:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 21774 transitions. [2020-10-26 21:30:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-26 21:30:21,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:30:21,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:30:21,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:30:21,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:30:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:30:21,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1144741798, now seen corresponding path program 1 times [2020-10-26 21:30:21,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:30:21,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508756666] [2020-10-26 21:30:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:30:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:26,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:26,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-26 21:30:26,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:30:26,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-26 21:30:26,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:26,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:30:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:30:26,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 21:30:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:26,913 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:30:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:30:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:26,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:26,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:30:26,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:30:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:30:26,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:30:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:30:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:30:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:30:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:27,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 21:30:27,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:30:27,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508756666] [2020-10-26 21:30:27,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:30:27,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:30:27,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41235010] [2020-10-26 21:30:27,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:30:27,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:30:27,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:30:27,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:30:27,669 INFO L87 Difference]: Start difference. First operand 13520 states and 21774 transitions. Second operand 7 states. [2020-10-26 21:30:27,877 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:30:29,057 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 21:30:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:30:47,527 INFO L93 Difference]: Finished difference Result 41039 states and 69299 transitions. [2020-10-26 21:30:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:30:47,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 973 [2020-10-26 21:30:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:30:47,640 INFO L225 Difference]: With dead ends: 41039 [2020-10-26 21:30:47,640 INFO L226 Difference]: Without dead ends: 27525 [2020-10-26 21:30:47,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:30:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27525 states. [2020-10-26 21:30:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27525 to 27058. [2020-10-26 21:30:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27058 states. [2020-10-26 21:30:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27058 states to 27058 states and 41585 transitions. [2020-10-26 21:30:48,542 INFO L78 Accepts]: Start accepts. Automaton has 27058 states and 41585 transitions. Word has length 973 [2020-10-26 21:30:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:30:48,542 INFO L481 AbstractCegarLoop]: Abstraction has 27058 states and 41585 transitions. [2020-10-26 21:30:48,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:30:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 27058 states and 41585 transitions. [2020-10-26 21:30:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-26 21:30:48,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:30:48,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:30:48,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:30:48,650 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:30:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:30:48,651 INFO L82 PathProgramCache]: Analyzing trace with hash 37830202, now seen corresponding path program 1 times [2020-10-26 21:30:48,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:30:48,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401810049] [2020-10-26 21:30:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:30:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:53,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 21:30:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:54,132 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:30:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:30:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:54,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:30:54,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:30:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:30:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:30:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:30:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:30:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:54,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:30:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:30:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:30:54,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:30:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 21:30:54,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:30:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 21:30:54,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:30:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:30:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:30:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 21:30:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:30:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:30:54,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401810049] [2020-10-26 21:30:54,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:30:54,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:30:54,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455100607] [2020-10-26 21:30:54,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:30:54,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:30:54,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:30:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:30:54,895 INFO L87 Difference]: Start difference. First operand 27058 states and 41585 transitions. Second operand 7 states. [2020-10-26 21:30:55,117 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:30:56,887 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:31:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:31:14,069 INFO L93 Difference]: Finished difference Result 82643 states and 137757 transitions. [2020-10-26 21:31:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:31:14,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2020-10-26 21:31:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:31:14,317 INFO L225 Difference]: With dead ends: 82643 [2020-10-26 21:31:14,317 INFO L226 Difference]: Without dead ends: 55591 [2020-10-26 21:31:14,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:31:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55591 states. [2020-10-26 21:31:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55591 to 54574. [2020-10-26 21:31:16,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54574 states. [2020-10-26 21:31:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54574 states to 54574 states and 84206 transitions. [2020-10-26 21:31:16,224 INFO L78 Accepts]: Start accepts. Automaton has 54574 states and 84206 transitions. Word has length 974 [2020-10-26 21:31:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:31:16,224 INFO L481 AbstractCegarLoop]: Abstraction has 54574 states and 84206 transitions. [2020-10-26 21:31:16,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:31:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 54574 states and 84206 transitions. [2020-10-26 21:31:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2020-10-26 21:31:16,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:31:16,377 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:31:16,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:31:16,377 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:31:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:31:16,378 INFO L82 PathProgramCache]: Analyzing trace with hash 997067304, now seen corresponding path program 1 times [2020-10-26 21:31:16,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:31:16,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864983608] [2020-10-26 21:31:16,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:31:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:31:16,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:16,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:21,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:31:21,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-26 21:31:21,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:31:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5277 [2020-10-26 21:31:21,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:31:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:31:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:31:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:31:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:31:22,202 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 21:31:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:31:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:31:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:22,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:31:22,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:31:22,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:31:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:31:22,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:31:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:31:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:31:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:31:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:31:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:22,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:31:22,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:31:22,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:31:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 21:31:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:31:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:31:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:31:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:31:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:31:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-26 21:31:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:31:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:22,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:31:22,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 21:31:22,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:31:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:31:22,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:31:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:31:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 21:31:22,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:31:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:31:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 21:31:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:31:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:22,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:31:22,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 21:31:22,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:31:22,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 21:31:22,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:31:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:31:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-26 21:31:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:31:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:31:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 21:31:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:31:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:31:22,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:31:22,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:31:22,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:31:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:31:22,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:31:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:31:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 21:31:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:31:22,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:31:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 73 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 21:31:23,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864983608] [2020-10-26 21:31:23,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:31:23,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:31:23,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097272074] [2020-10-26 21:31:23,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:31:23,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:31:23,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:31:23,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:31:23,493 INFO L87 Difference]: Start difference. First operand 54574 states and 84206 transitions. Second operand 8 states. [2020-10-26 21:31:23,716 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 21:31:24,144 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 21:31:24,610 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 21:31:26,987 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-26 21:31:28,228 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 21:32:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:32:01,249 INFO L93 Difference]: Finished difference Result 266656 states and 487247 transitions. [2020-10-26 21:32:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 21:32:01,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1028 [2020-10-26 21:32:01,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:32:03,033 INFO L225 Difference]: With dead ends: 266656 [2020-10-26 21:32:03,033 INFO L226 Difference]: Without dead ends: 212088 [2020-10-26 21:32:03,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-26 21:32:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212088 states. [2020-10-26 21:32:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212088 to 211146. [2020-10-26 21:32:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211146 states. [2020-10-26 21:32:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211146 states to 211146 states and 333319 transitions. [2020-10-26 21:32:12,172 INFO L78 Accepts]: Start accepts. Automaton has 211146 states and 333319 transitions. Word has length 1028 [2020-10-26 21:32:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:32:12,172 INFO L481 AbstractCegarLoop]: Abstraction has 211146 states and 333319 transitions. [2020-10-26 21:32:12,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:32:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 211146 states and 333319 transitions. [2020-10-26 21:32:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1087 [2020-10-26 21:32:13,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:32:13,534 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, 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, 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] [2020-10-26 21:32:13,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:32:13,535 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:32:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:32:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash 670933335, now seen corresponding path program 1 times [2020-10-26 21:32:13,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:32:13,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547078354] [2020-10-26 21:32:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:32:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:32:13,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:32:13,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking...