/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:37:51,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:37:51,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:37:51,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:37:51,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:37:51,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:37:51,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:37:51,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:37:51,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:37:51,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:37:51,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:37:51,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:37:51,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:37:51,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:37:51,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:37:51,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:37:51,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:37:51,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:37:51,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:37:51,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:37:51,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:37:51,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:37:51,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:37:51,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:37:51,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:37:51,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:37:51,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:37:51,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:37:51,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:37:51,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:37:51,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:37:51,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:37:51,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:37:51,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:37:51,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:37:51,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:37:51,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:37:51,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:37:51,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:37:51,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:37:51,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:37:51,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:37:51,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:37:51,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:37:51,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:37:51,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:37:51,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:37:51,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:37:51,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:37:51,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:37:51,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:37:51,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:37:51,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:37:51,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:37:51,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:37:51,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:37:51,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:37:51,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:37:51,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:37:51,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:37:51,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:37:51,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:37:51,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:37:51,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:37:51,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:37:51,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:37:51,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:37:51,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:37:51,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:37:51,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:37:51,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:37:51,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:37:51,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:37:51,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:37:51,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:37:51,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:37:51,796 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:37:51,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label13.c [2020-10-29 05:37:51,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56d1ab79/a19aacf092494061b1497876a878f552/FLAG722fa3c37 [2020-10-29 05:37:53,150 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:37:53,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label13.c [2020-10-29 05:37:53,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56d1ab79/a19aacf092494061b1497876a878f552/FLAG722fa3c37 [2020-10-29 05:37:53,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56d1ab79/a19aacf092494061b1497876a878f552 [2020-10-29 05:37:53,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:37:53,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:37:53,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:37:53,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:37:53,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:37:53,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:37:53" (1/1) ... [2020-10-29 05:37:53,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd415d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:53, skipping insertion in model container [2020-10-29 05:37:53,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:37:53" (1/1) ... [2020-10-29 05:37:53,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:37:53,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:37:55,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:37:56,012 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:37:57,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:37:57,297 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:37:57,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57 WrapperNode [2020-10-29 05:37:57,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:37:57,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:37:57,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:37:57,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:37:57,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (1/1) ... [2020-10-29 05:37:57,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (1/1) ... [2020-10-29 05:37:57,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (1/1) ... [2020-10-29 05:37:57,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (1/1) ... [2020-10-29 05:37:57,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (1/1) ... [2020-10-29 05:37:57,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (1/1) ... [2020-10-29 05:37:57,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (1/1) ... [2020-10-29 05:37:57,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:37:57,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:37:57,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:37:57,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:37:57,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (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 [2020-10-29 05:37:57,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:37:57,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:37:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:37:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:37:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:37:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:37:57,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:37:57,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:37:57,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:37:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:37:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:37:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:37:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:37:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:37:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:37:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:37:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:37:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:37:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:37:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:37:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:37:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:37:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:37:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:37:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:37:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:37:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:38:05,173 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:38:05,174 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:38:05,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:38:05 BoogieIcfgContainer [2020-10-29 05:38:05,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:38:05,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:38:05,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:38:05,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:38:05,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:37:53" (1/3) ... [2020-10-29 05:38:05,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c188702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:38:05, skipping insertion in model container [2020-10-29 05:38:05,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:37:57" (2/3) ... [2020-10-29 05:38:05,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c188702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:38:05, skipping insertion in model container [2020-10-29 05:38:05,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:38:05" (3/3) ... [2020-10-29 05:38:05,190 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label13.c [2020-10-29 05:38:05,203 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:38:05,210 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:38:05,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:38:05,274 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:38:05,274 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:38:05,274 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:38:05,274 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:38:05,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:38:05,275 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:38:05,275 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:38:05,275 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:38:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:38:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-29 05:38:05,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:05,418 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] [2020-10-29 05:38:05,419 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:05,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1568604672, now seen corresponding path program 1 times [2020-10-29 05:38:05,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:05,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879369618] [2020-10-29 05:38:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:10,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:11,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-29 05:38:11,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:38:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-29 05:38:11,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:11,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:38:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:38:11,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 983 [2020-10-29 05:38:11,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 05:38:13,335 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:38:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:38:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:13,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:13,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:38:13,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:38:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:13,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:38:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:38:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:38:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:38:15,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879369618] [2020-10-29 05:38:15,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:38:15,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:38:15,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936107787] [2020-10-29 05:38:15,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:38:15,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:38:15,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:38:15,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:38:15,467 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:38:15,802 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:38:32,191 INFO L93 Difference]: Finished difference Result 3791 states and 7065 transitions. [2020-10-29 05:38:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:38:32,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 974 [2020-10-29 05:38:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:38:32,233 INFO L225 Difference]: With dead ends: 3791 [2020-10-29 05:38:32,234 INFO L226 Difference]: Without dead ends: 2408 [2020-10-29 05:38:32,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:38:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-10-29 05:38:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2353. [2020-10-29 05:38:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2353 states. [2020-10-29 05:38:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 3985 transitions. [2020-10-29 05:38:32,417 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 3985 transitions. Word has length 974 [2020-10-29 05:38:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:38:32,421 INFO L481 AbstractCegarLoop]: Abstraction has 2353 states and 3985 transitions. [2020-10-29 05:38:32,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:38:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 3985 transitions. [2020-10-29 05:38:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-29 05:38:32,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:32,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:38:32,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:38:32,468 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:32,469 INFO L82 PathProgramCache]: Analyzing trace with hash 66948801, now seen corresponding path program 1 times [2020-10-29 05:38:32,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:32,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353447502] [2020-10-29 05:38:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:37,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:37,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-29 05:38:37,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:38:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 05:38:37,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:37,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:38:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:38:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 980 [2020-10-29 05:38:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:38:39,116 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:38:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:38:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:39,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:38:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:38:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:39,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:38:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:38:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:39,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:38:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:38:39,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:38:39,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:38:39,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:38:39,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:38:39,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:38:39,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:38:39,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:38:39,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:38:39,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:38:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:38:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:38:40,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353447502] [2020-10-29 05:38:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:38:40,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:38:40,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113251560] [2020-10-29 05:38:40,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:38:40,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:38:40,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:38:40,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:38:40,140 INFO L87 Difference]: Start difference. First operand 2353 states and 3985 transitions. Second operand 5 states. [2020-10-29 05:38:40,433 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:38:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:38:58,507 INFO L93 Difference]: Finished difference Result 6843 states and 11735 transitions. [2020-10-29 05:38:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:38:58,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 982 [2020-10-29 05:38:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:38:58,546 INFO L225 Difference]: With dead ends: 6843 [2020-10-29 05:38:58,546 INFO L226 Difference]: Without dead ends: 4496 [2020-10-29 05:38:58,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:38:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2020-10-29 05:38:58,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4470. [2020-10-29 05:38:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4470 states. [2020-10-29 05:38:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6936 transitions. [2020-10-29 05:38:58,717 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6936 transitions. Word has length 982 [2020-10-29 05:38:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:38:58,719 INFO L481 AbstractCegarLoop]: Abstraction has 4470 states and 6936 transitions. [2020-10-29 05:38:58,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:38:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6936 transitions. [2020-10-29 05:38:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2020-10-29 05:38:58,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:38:58,743 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:38:58,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:38:58,743 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:38:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:38:58,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1103936282, now seen corresponding path program 1 times [2020-10-29 05:38:58,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:38:58,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087992503] [2020-10-29 05:38:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:38:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:38:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:03,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:03,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1003 [2020-10-29 05:39:03,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:39:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 05:39:03,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:03,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:39:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:39:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 980 [2020-10-29 05:39:03,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:04,875 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:04,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:04,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:04,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:39:04,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:04,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:04,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:05,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:39:05,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 05:39:05,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:05,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:39:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:39:05,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087992503] [2020-10-29 05:39:05,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:39:05,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:39:05,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545486233] [2020-10-29 05:39:05,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:39:05,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:05,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:39:05,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:39:05,986 INFO L87 Difference]: Start difference. First operand 4470 states and 6936 transitions. Second operand 5 states. [2020-10-29 05:39:06,292 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:39:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:39:24,071 INFO L93 Difference]: Finished difference Result 13094 states and 20625 transitions. [2020-10-29 05:39:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:39:24,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 983 [2020-10-29 05:39:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:39:24,122 INFO L225 Difference]: With dead ends: 13094 [2020-10-29 05:39:24,122 INFO L226 Difference]: Without dead ends: 8630 [2020-10-29 05:39:24,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:39:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2020-10-29 05:39:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 8605. [2020-10-29 05:39:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2020-10-29 05:39:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12503 transitions. [2020-10-29 05:39:24,446 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12503 transitions. Word has length 983 [2020-10-29 05:39:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:39:24,448 INFO L481 AbstractCegarLoop]: Abstraction has 8605 states and 12503 transitions. [2020-10-29 05:39:24,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:39:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12503 transitions. [2020-10-29 05:39:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-29 05:39:24,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:39:24,533 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:39:24,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:39:24,533 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:39:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:39:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash -595720911, now seen corresponding path program 1 times [2020-10-29 05:39:24,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:39:24,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324380917] [2020-10-29 05:39:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:39:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:29,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:29,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-29 05:39:29,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:39:29,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-29 05:39:29,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:29,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:39:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:39:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 981 [2020-10-29 05:39:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:30,798 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:30,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:39:30,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:30,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:30,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:30,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:30,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:39:30,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:39:30,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:30,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:39:30,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:39:31,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324380917] [2020-10-29 05:39:31,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:39:31,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:39:31,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782282991] [2020-10-29 05:39:31,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:39:31,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:39:31,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:39:31,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:39:31,809 INFO L87 Difference]: Start difference. First operand 8605 states and 12503 transitions. Second operand 5 states. [2020-10-29 05:39:32,173 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:39:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:39:51,826 INFO L93 Difference]: Finished difference Result 25608 states and 38073 transitions. [2020-10-29 05:39:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:39:51,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 990 [2020-10-29 05:39:51,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:39:51,908 INFO L225 Difference]: With dead ends: 25608 [2020-10-29 05:39:51,908 INFO L226 Difference]: Without dead ends: 17009 [2020-10-29 05:39:51,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:39:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17009 states. [2020-10-29 05:39:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17009 to 16978. [2020-10-29 05:39:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16978 states. [2020-10-29 05:39:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16978 states to 16978 states and 23984 transitions. [2020-10-29 05:39:52,432 INFO L78 Accepts]: Start accepts. Automaton has 16978 states and 23984 transitions. Word has length 990 [2020-10-29 05:39:52,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:39:52,434 INFO L481 AbstractCegarLoop]: Abstraction has 16978 states and 23984 transitions. [2020-10-29 05:39:52,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:39:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16978 states and 23984 transitions. [2020-10-29 05:39:52,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-29 05:39:52,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:39:52,502 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:39:52,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:39:52,502 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:39:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:39:52,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1658593843, now seen corresponding path program 1 times [2020-10-29 05:39:52,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:39:52,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778454925] [2020-10-29 05:39:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:39:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:52,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:57,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-29 05:39:57,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:39:57,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-29 05:39:57,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:57,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:39:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 05:39:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 981 [2020-10-29 05:39:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:58,645 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:39:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:39:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:58,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:39:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:39:58,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:58,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:39:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:39:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:39:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:39:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:39:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:39:58,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:39:58,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:39:58,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:39:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:39:58,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:39:58,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:39:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:39:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:39:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:39:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:40:00,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778454925] [2020-10-29 05:40:00,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:40:00,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:40:00,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373388603] [2020-10-29 05:40:00,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:40:00,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:40:00,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:40:00,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:40:00,100 INFO L87 Difference]: Start difference. First operand 16978 states and 23984 transitions. Second operand 6 states. [2020-10-29 05:40:00,304 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:40:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:40:15,852 INFO L93 Difference]: Finished difference Result 42234 states and 61708 transitions. [2020-10-29 05:40:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:40:15,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 990 [2020-10-29 05:40:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:40:15,969 INFO L225 Difference]: With dead ends: 42234 [2020-10-29 05:40:15,970 INFO L226 Difference]: Without dead ends: 25262 [2020-10-29 05:40:16,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:40:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25262 states. [2020-10-29 05:40:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25262 to 25224. [2020-10-29 05:40:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25224 states. [2020-10-29 05:40:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25224 states to 25224 states and 36664 transitions. [2020-10-29 05:40:17,083 INFO L78 Accepts]: Start accepts. Automaton has 25224 states and 36664 transitions. Word has length 990 [2020-10-29 05:40:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:40:17,083 INFO L481 AbstractCegarLoop]: Abstraction has 25224 states and 36664 transitions. [2020-10-29 05:40:17,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:40:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 25224 states and 36664 transitions. [2020-10-29 05:40:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-29 05:40:17,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:40:17,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-29 05:40:17,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:40:17,184 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:40:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:40:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash -733199133, now seen corresponding path program 1 times [2020-10-29 05:40:17,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:40:17,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188509143] [2020-10-29 05:40:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:40:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:17,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:22,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-29 05:40:22,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:40:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-29 05:40:22,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:22,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:40:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:40:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 05:40:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:22,912 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:40:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:40:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:22,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:40:22,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:40:22,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:22,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:40:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:40:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:40:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:40:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:23,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:40:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:40:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:40:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:40:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:40:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:40:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:40:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:40:23,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:40:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:40:23,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:40:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 05:40:23,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:40:23,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:40:23,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:40:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:40:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:40:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:40:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:40:23,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188509143] [2020-10-29 05:40:23,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:40:23,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:40:23,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083365800] [2020-10-29 05:40:23,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:40:23,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:40:23,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:40:23,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:40:23,635 INFO L87 Difference]: Start difference. First operand 25224 states and 36664 transitions. Second operand 7 states. [2020-10-29 05:40:23,961 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:40:24,552 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:00,558 INFO L93 Difference]: Finished difference Result 101516 states and 160918 transitions. [2020-10-29 05:41:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:41:00,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1002 [2020-10-29 05:41:00,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:00,955 INFO L225 Difference]: With dead ends: 101516 [2020-10-29 05:41:00,956 INFO L226 Difference]: Without dead ends: 76298 [2020-10-29 05:41:01,041 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 [2020-10-29 05:41:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76298 states. [2020-10-29 05:41:03,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76298 to 76182. [2020-10-29 05:41:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76182 states. [2020-10-29 05:41:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76182 states to 76182 states and 118630 transitions. [2020-10-29 05:41:03,576 INFO L78 Accepts]: Start accepts. Automaton has 76182 states and 118630 transitions. Word has length 1002 [2020-10-29 05:41:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:03,577 INFO L481 AbstractCegarLoop]: Abstraction has 76182 states and 118630 transitions. [2020-10-29 05:41:03,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:41:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 76182 states and 118630 transitions. [2020-10-29 05:41:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2020-10-29 05:41:03,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:03,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:41:03,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:41:03,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:03,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1142015892, now seen corresponding path program 1 times [2020-10-29 05:41:03,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:03,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718609446] [2020-10-29 05:41:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:09,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:09,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1033 [2020-10-29 05:41:09,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-29 05:41:09,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:09,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 05:41:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 05:41:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:09,497 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:09,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:09,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:09,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:41:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:09,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:41:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:41:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:41:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:09,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:09,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:09,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:41:09,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:09,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:41:09,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:09,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:09,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 05:41:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 05:41:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:09,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:09,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:41:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:41:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 05:41:10,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718609446] [2020-10-29 05:41:10,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:41:10,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:41:10,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203775649] [2020-10-29 05:41:10,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:41:10,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:10,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:41:10,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:41:10,431 INFO L87 Difference]: Start difference. First operand 76182 states and 118630 transitions. Second operand 7 states. [2020-10-29 05:41:10,654 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:11,637 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 159