/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:57:50,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:57:51,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:57:51,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:57:51,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:57:51,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:57:51,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:57:51,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:57:51,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:57:51,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:57:51,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:57:51,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:57:51,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:57:51,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:57:51,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:57:51,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:57:51,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:57:51,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:57:51,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:57:51,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:57:51,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:57:51,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:57:51,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:57:51,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:57:51,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:57:51,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:57:51,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:57:51,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:57:51,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:57:51,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:57:51,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:57:51,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:57:51,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:57:51,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:57:51,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:57:51,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:57:51,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:57:51,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:57:51,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:57:51,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:57:51,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:57:51,167 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 [2020-10-28 10:57:51,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:57:51,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:57:51,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:57:51,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:57:51,224 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:57:51,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:57:51,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:57:51,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:57:51,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:57:51,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:57:51,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:57:51,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:57:51,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:57:51,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:57:51,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:57:51,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:57:51,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:57:51,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:57:51,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:57:51,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:57:51,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:57:51,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:57:51,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:57:51,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:57:51,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:57:51,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:57:51,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:57:51,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:57:51,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:57:51,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:57:51,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:57:51,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:57:51,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:57:51,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:57:51,711 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:57:51,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label14.c [2020-10-28 10:57:51,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522347390/a2141b3fe72942c9ba1d65a46648fdff/FLAG78c29a666 [2020-10-28 10:57:52,969 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:57:52,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label14.c [2020-10-28 10:57:53,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522347390/a2141b3fe72942c9ba1d65a46648fdff/FLAG78c29a666 [2020-10-28 10:57:53,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/522347390/a2141b3fe72942c9ba1d65a46648fdff [2020-10-28 10:57:53,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:57:53,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:57:53,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:57:53,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:57:53,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:57:53,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:57:53" (1/1) ... [2020-10-28 10:57:53,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b4610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:53, skipping insertion in model container [2020-10-28 10:57:53,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:57:53" (1/1) ... [2020-10-28 10:57:53,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:57:53,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:57:55,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:57:55,964 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:57:57,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:57:57,139 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:57:57,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57 WrapperNode [2020-10-28 10:57:57,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:57:57,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:57:57,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:57:57,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:57:57,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2020-10-28 10:57:57,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2020-10-28 10:57:57,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2020-10-28 10:57:57,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2020-10-28 10:57:57,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2020-10-28 10:57:57,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2020-10-28 10:57:57,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (1/1) ... [2020-10-28 10:57:57,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:57:57,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:57:57,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:57:57,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:57:57,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (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 [2020-10-28 10:57:57,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:57:57,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:57:57,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:57:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:57:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:57:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:57:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:57:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:57:57,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:57:57,791 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:57:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:57:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:57:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:57:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:57:57,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:57:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:57:57,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:57:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:57:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:57:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:57:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:57:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:57:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:57:57,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:57:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:57:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:57:57,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:58:06,019 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:58:06,019 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:58:06,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:06 BoogieIcfgContainer [2020-10-28 10:58:06,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:58:06,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:58:06,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:58:06,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:58:06,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:57:53" (1/3) ... [2020-10-28 10:58:06,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791e4c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:58:06, skipping insertion in model container [2020-10-28 10:58:06,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:57:57" (2/3) ... [2020-10-28 10:58:06,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791e4c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:58:06, skipping insertion in model container [2020-10-28 10:58:06,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:58:06" (3/3) ... [2020-10-28 10:58:06,036 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label14.c [2020-10-28 10:58:06,049 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:58:06,055 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:58:06,070 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:58:06,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:58:06,107 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:58:06,107 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:58:06,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:58:06,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:58:06,108 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:58:06,108 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:58:06,108 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:58:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-28 10:58:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-28 10:58:06,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:58:06,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:58:06,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:58:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:58:06,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1266893516, now seen corresponding path program 1 times [2020-10-28 10:58:06,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:58:06,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853285390] [2020-10-28 10:58:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:58:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1003 [2020-10-28 10:58:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:58:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5210 [2020-10-28 10:58:12,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:12,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 10:58:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:58:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 994 [2020-10-28 10:58:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:58:14,104 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:58:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:58:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:14,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:14,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:58:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:58:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 10:58:14,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:14,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:58:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:58:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:58:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:58:16,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853285390] [2020-10-28 10:58:16,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:58:16,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:58:16,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14136835] [2020-10-28 10:58:16,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:58:16,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:58:16,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:58:16,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:58:16,240 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 5 states. [2020-10-28 10:58:16,532 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:58:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:58:33,049 INFO L93 Difference]: Finished difference Result 3772 states and 7046 transitions. [2020-10-28 10:58:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:58:33,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 985 [2020-10-28 10:58:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:58:33,112 INFO L225 Difference]: With dead ends: 3772 [2020-10-28 10:58:33,112 INFO L226 Difference]: Without dead ends: 2389 [2020-10-28 10:58:33,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:58:33,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-10-28 10:58:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2333. [2020-10-28 10:58:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-10-28 10:58:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 4232 transitions. [2020-10-28 10:58:33,349 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 4232 transitions. Word has length 985 [2020-10-28 10:58:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:58:33,353 INFO L481 AbstractCegarLoop]: Abstraction has 2333 states and 4232 transitions. [2020-10-28 10:58:33,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:58:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 4232 transitions. [2020-10-28 10:58:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-28 10:58:33,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:58:33,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:58:33,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:58:33,406 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:58:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:58:33,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1304151859, now seen corresponding path program 1 times [2020-10-28 10:58:33,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:58:33,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453316623] [2020-10-28 10:58:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:58:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:36,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:38,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:38,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-28 10:58:38,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:58:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-28 10:58:38,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:38,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:58:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:58:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:58:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:39,322 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:58:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:58:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:39,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:39,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:58:39,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:58:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 10:58:39,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:39,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:58:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:58:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:58:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:58:39,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:58:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:58:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:58:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:58:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:58:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:58:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 10:58:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:58:39,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:58:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:58:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:58:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 10:58:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:58:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:58:40,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453316623] [2020-10-28 10:58:40,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:58:40,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:58:40,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849669693] [2020-10-28 10:58:40,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:58:40,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:58:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:58:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:58:40,747 INFO L87 Difference]: Start difference. First operand 2333 states and 4232 transitions. Second operand 7 states. [2020-10-28 10:58:40,958 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:58:41,825 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:59:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:59:00,187 INFO L93 Difference]: Finished difference Result 6897 states and 12613 transitions. [2020-10-28 10:59:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:59:00,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 997 [2020-10-28 10:59:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:59:00,225 INFO L225 Difference]: With dead ends: 6897 [2020-10-28 10:59:00,225 INFO L226 Difference]: Without dead ends: 4570 [2020-10-28 10:59:00,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:59:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2020-10-28 10:59:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4492. [2020-10-28 10:59:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4492 states. [2020-10-28 10:59:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7152 transitions. [2020-10-28 10:59:00,388 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7152 transitions. Word has length 997 [2020-10-28 10:59:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:59:00,389 INFO L481 AbstractCegarLoop]: Abstraction has 4492 states and 7152 transitions. [2020-10-28 10:59:00,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:59:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7152 transitions. [2020-10-28 10:59:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2020-10-28 10:59:00,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:59:00,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:59:00,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:59:00,416 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:59:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:59:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash 281833810, now seen corresponding path program 1 times [2020-10-28 10:59:00,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:59:00,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132029436] [2020-10-28 10:59:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:59:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:05,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:05,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1027 [2020-10-28 10:59:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:59:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5299 [2020-10-28 10:59:05,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:05,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:59:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:59:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:59:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:06,253 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:59:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:59:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:06,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:06,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:59:06,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:59:06,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:06,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:59:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:59:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:59:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:59:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:06,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:06,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:59:06,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:59:06,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:06,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:59:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:59:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:59:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:59:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:06,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:06,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:59:06,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 10:59:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:06,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:59:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:59:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 10:59:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:59:07,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132029436] [2020-10-28 10:59:07,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:59:07,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:59:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453897185] [2020-10-28 10:59:07,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:59:07,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:59:07,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:59:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:59:07,377 INFO L87 Difference]: Start difference. First operand 4492 states and 7152 transitions. Second operand 7 states. [2020-10-28 10:59:07,664 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:59:08,255 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:59:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:59:41,648 INFO L93 Difference]: Finished difference Result 18225 states and 30011 transitions. [2020-10-28 10:59:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:59:41,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1005 [2020-10-28 10:59:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:59:41,748 INFO L225 Difference]: With dead ends: 18225 [2020-10-28 10:59:41,748 INFO L226 Difference]: Without dead ends: 13739 [2020-10-28 10:59:41,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:59:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13739 states. [2020-10-28 10:59:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13739 to 13681. [2020-10-28 10:59:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13681 states. [2020-10-28 10:59:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13681 states to 13681 states and 21840 transitions. [2020-10-28 10:59:42,284 INFO L78 Accepts]: Start accepts. Automaton has 13681 states and 21840 transitions. Word has length 1005 [2020-10-28 10:59:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:59:42,285 INFO L481 AbstractCegarLoop]: Abstraction has 13681 states and 21840 transitions. [2020-10-28 10:59:42,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:59:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 13681 states and 21840 transitions. [2020-10-28 10:59:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-28 10:59:42,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:59:42,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:59:42,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:59:42,372 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:59:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:59:42,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1870468401, now seen corresponding path program 1 times [2020-10-28 10:59:42,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:59:42,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251955066] [2020-10-28 10:59:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:59:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:42,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:47,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:47,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1038 [2020-10-28 10:59:47,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:59:47,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-28 10:59:47,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:47,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:59:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:59:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:59:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:59:48,051 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:59:48,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:59:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:48,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:48,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:59:48,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:48,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:59:48,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:48,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:48,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:59:48,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:59:48,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:59:48,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:48,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:59:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:48,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:48,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:48,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:59:48,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:48,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:59:48,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:48,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:59:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:59:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:59:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:48,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:59:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:59:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:59:48,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:59:48,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:59:48,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:59:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 10:59:48,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:59:48,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:59:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:59:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:59:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 10:59:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:59:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:59:49,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251955066] [2020-10-28 10:59:49,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:59:49,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:59:49,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580432585] [2020-10-28 10:59:49,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:59:49,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:59:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:59:49,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:59:49,037 INFO L87 Difference]: Start difference. First operand 13681 states and 21840 transitions. Second operand 7 states. [2020-10-28 10:59:49,372 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:59:50,568 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 11:00:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:00:14,801 INFO L93 Difference]: Finished difference Result 42260 states and 73393 transitions. [2020-10-28 11:00:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 11:00:14,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1016 [2020-10-28 11:00:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:00:14,975 INFO L225 Difference]: With dead ends: 42260 [2020-10-28 11:00:14,975 INFO L226 Difference]: Without dead ends: 28585 [2020-10-28 11:00:15,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 11:00:15,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28585 states. [2020-10-28 11:00:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28585 to 27831. [2020-10-28 11:00:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27831 states. [2020-10-28 11:00:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27831 states to 27831 states and 44255 transitions. [2020-10-28 11:00:16,318 INFO L78 Accepts]: Start accepts. Automaton has 27831 states and 44255 transitions. Word has length 1016 [2020-10-28 11:00:16,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:00:16,319 INFO L481 AbstractCegarLoop]: Abstraction has 27831 states and 44255 transitions. [2020-10-28 11:00:16,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:00:16,319 INFO L276 IsEmpty]: Start isEmpty. Operand 27831 states and 44255 transitions. [2020-10-28 11:00:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2020-10-28 11:00:16,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:00:16,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:00:16,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 11:00:16,431 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:00:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:00:16,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1477930927, now seen corresponding path program 1 times [2020-10-28 11:00:16,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:00:16,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621329695] [2020-10-28 11:00:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:00:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:16,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:21,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:21,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1039 [2020-10-28 11:00:21,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:00:21,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 11:00:21,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:21,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:00:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:00:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 11:00:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:22,005 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:00:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:00:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:22,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:00:22,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 11:00:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:22,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:00:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:00:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:00:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:22,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:00:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:22,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 11:00:22,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 11:00:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:22,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:00:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:00:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 11:00:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 11:00:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:22,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:22,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:00:22,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 11:00:22,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:22,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:00:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 11:00:22,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:00:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 11:00:22,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621329695] [2020-10-28 11:00:22,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:00:22,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:00:22,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134886589] [2020-10-28 11:00:22,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:00:22,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:00:22,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:00:22,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:00:22,907 INFO L87 Difference]: Start difference. First operand 27831 states and 44255 transitions. Second operand 7 states. [2020-10-28 11:00:23,104 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:00:24,216 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 11:00:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:00:43,953 INFO L93 Difference]: Finished difference Result 86253 states and 147853 transitions. [2020-10-28 11:00:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:00:43,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1017 [2020-10-28 11:00:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:00:44,242 INFO L225 Difference]: With dead ends: 86253 [2020-10-28 11:00:44,242 INFO L226 Difference]: Without dead ends: 58428 [2020-10-28 11:00:44,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:00:44,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58428 states. [2020-10-28 11:00:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58428 to 57062. [2020-10-28 11:00:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57062 states. [2020-10-28 11:00:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57062 states to 57062 states and 88536 transitions. [2020-10-28 11:00:46,536 INFO L78 Accepts]: Start accepts. Automaton has 57062 states and 88536 transitions. Word has length 1017 [2020-10-28 11:00:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:00:46,536 INFO L481 AbstractCegarLoop]: Abstraction has 57062 states and 88536 transitions. [2020-10-28 11:00:46,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:00:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 57062 states and 88536 transitions. [2020-10-28 11:00:46,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2020-10-28 11:00:46,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:00:46,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:00:46,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 11:00:46,720 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:00:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:00:46,721 INFO L82 PathProgramCache]: Analyzing trace with hash 437916473, now seen corresponding path program 1 times [2020-10-28 11:00:46,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:00:46,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539983819] [2020-10-28 11:00:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:00:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:51,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:51,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-28 11:00:51,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 11:00:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 11:00:51,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:51,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 11:00:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 11:00:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 11:00:51,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:52,262 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:00:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:00:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:52,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:52,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:00:52,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 11:00:52,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:52,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:00:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:00:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 11:00:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:52,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:00:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:52,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:52,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 11:00:52,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:52,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 11:00:52,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:52,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:52,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:00:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:00:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 11:00:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 11:00:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:00:52,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:00:52,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:00:52,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:00:52,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:00:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 11:00:52,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:00:52,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:00:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:00:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 11:00:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:00:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:00:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 11:00:53,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539983819] [2020-10-28 11:00:53,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 11:00:53,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 11:00:53,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730432502] [2020-10-28 11:00:53,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 11:00:53,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 11:00:53,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 11:00:53,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 11:00:53,111 INFO L87 Difference]: Start difference. First operand 57062 states and 88536 transitions. Second operand 7 states. [2020-10-28 11:00:53,329 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 11:00:54,290 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 11:01:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 11:01:13,042 INFO L93 Difference]: Finished difference Result 143606 states and 223919 transitions. [2020-10-28 11:01:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 11:01:13,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1022 [2020-10-28 11:01:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 11:01:13,432 INFO L225 Difference]: With dead ends: 143606 [2020-10-28 11:01:13,432 INFO L226 Difference]: Without dead ends: 86550 [2020-10-28 11:01:13,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 11:01:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86550 states. [2020-10-28 11:01:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86550 to 84574. [2020-10-28 11:01:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84574 states. [2020-10-28 11:01:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84574 states to 84574 states and 128361 transitions. [2020-10-28 11:01:17,442 INFO L78 Accepts]: Start accepts. Automaton has 84574 states and 128361 transitions. Word has length 1022 [2020-10-28 11:01:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 11:01:17,442 INFO L481 AbstractCegarLoop]: Abstraction has 84574 states and 128361 transitions. [2020-10-28 11:01:17,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 11:01:17,442 INFO L276 IsEmpty]: Start isEmpty. Operand 84574 states and 128361 transitions. [2020-10-28 11:01:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-28 11:01:17,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 11:01:17,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 11:01:17,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 11:01:17,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 11:01:17,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 11:01:17,875 INFO L82 PathProgramCache]: Analyzing trace with hash -5606337, now seen corresponding path program 1 times [2020-10-28 11:01:17,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 11:01:17,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974825418] [2020-10-28 11:01:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 11:01:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:01:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:01:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:01:18,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:01:23,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1054 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 11:01:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:01:23,450 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 11:01:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 11:01:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:01:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:01:23,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:01:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:01:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:01:23,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 11:01:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:01:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:01:23,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:01:23,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 11:01:23,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:01:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 11:01:23,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:01:23,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:01:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 11:01:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 11:01:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 11:01:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:01:23,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 11:01:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:01:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:01:23,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:01:23,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 11:01:23,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:01:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 11:01:23,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:01:23,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:01:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 11:01:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 11:01:23,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 11:01:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 11:01:23,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 11:01:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 11:01:23,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 11:01:23,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 11:01:23,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 11:01:23,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 11:01:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 11:01:23,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 11:01:23,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 11:01:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 11:01:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 11:01:23,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 11:01:23,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0