/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:45:31,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:45:31,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:45:31,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:45:31,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:45:31,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:45:31,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:45:31,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:45:31,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:45:31,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:45:31,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:45:31,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:45:31,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:45:31,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:45:31,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:45:31,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:45:31,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:45:31,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:45:31,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:45:31,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:45:31,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:45:31,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:45:31,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:45:31,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:45:31,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:45:31,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:45:31,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:45:31,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:45:31,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:45:31,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:45:31,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:45:31,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:45:31,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:45:31,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:45:31,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:45:31,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:45:31,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:45:31,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:45:31,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:45:31,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:45:31,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:45:31,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:45:31,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:45:31,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:45:31,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:45:31,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:45:31,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:45:31,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:45:31,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:45:31,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:45:31,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:45:31,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:45:31,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:45:31,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:45:31,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:45:31,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:45:31,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:45:31,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:45:31,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:45:31,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:45:31,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:45:31,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:45:31,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:45:31,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:45:31,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:45:31,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:45:31,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:45:31,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:45:31,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:45:31,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:45:31,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:45:31,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:45:31,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:45:31,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:45:31,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:45:31,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:45:31,867 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:45:31,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:31,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eafe38309/74e70037749a420488437baa9a7dbaa8/FLAG89fccb032 [2020-10-27 04:45:32,779 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:45:32,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:32,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eafe38309/74e70037749a420488437baa9a7dbaa8/FLAG89fccb032 [2020-10-27 04:45:32,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eafe38309/74e70037749a420488437baa9a7dbaa8 [2020-10-27 04:45:32,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:45:32,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:45:32,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:32,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:45:32,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:45:32,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:32" (1/1) ... [2020-10-27 04:45:32,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d241efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32, skipping insertion in model container [2020-10-27 04:45:32,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:32" (1/1) ... [2020-10-27 04:45:32,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:45:33,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:45:33,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:33,709 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:45:33,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:33,892 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:45:33,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33 WrapperNode [2020-10-27 04:45:33,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:33,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:45:33,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:45:33,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:45:33,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... [2020-10-27 04:45:33,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... [2020-10-27 04:45:33,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... [2020-10-27 04:45:33,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... [2020-10-27 04:45:34,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... [2020-10-27 04:45:34,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... [2020-10-27 04:45:34,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... [2020-10-27 04:45:34,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:45:34,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:45:34,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:45:34,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:45:34,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:45:34,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:45:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:45:34,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:45:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:45:34,223 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:45:34,224 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:45:34,225 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:45:34,225 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:45:34,226 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:45:34,226 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:45:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:45:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:45:34,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:45:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:45:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:45:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:45:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:45:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:45:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:45:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:45:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:45:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:45:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:45:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:45:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:45:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:45:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:45:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:45:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:45:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:45:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:45:36,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:45:36,918 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:45:36,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:36 BoogieIcfgContainer [2020-10-27 04:45:36,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:45:36,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:45:36,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:45:36,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:45:36,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:32" (1/3) ... [2020-10-27 04:45:36,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78841a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:36, skipping insertion in model container [2020-10-27 04:45:36,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:33" (2/3) ... [2020-10-27 04:45:36,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78841a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:36, skipping insertion in model container [2020-10-27 04:45:36,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:36" (3/3) ... [2020-10-27 04:45:36,930 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:36,942 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:45:36,948 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:45:36,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:45:36,994 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:45:36,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:45:36,995 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:45:36,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:45:36,995 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:45:36,995 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:45:36,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:45:36,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:45:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states. [2020-10-27 04:45:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:45:37,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:37,079 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] [2020-10-27 04:45:37,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:37,087 INFO L82 PathProgramCache]: Analyzing trace with hash 41819709, now seen corresponding path program 1 times [2020-10-27 04:45:37,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:37,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898183400] [2020-10-27 04:45:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:41,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:41,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:45:41,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3709 [2020-10-27 04:45:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:45:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:45:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:45:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:45:42,931 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:45:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:45:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:45:43,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:45:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:45:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:43,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:45:43,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:43,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-27 04:45:43,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:45:43,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:45:43,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:45:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:43,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:43,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:43,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:45:43,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:45:43,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:45:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:45:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:45:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:45:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:44,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:44,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:45:44,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:45:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:44,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:44,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:45:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:45:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:44,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:44,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:45:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:44,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:44,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:44,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:44,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:45:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:44,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:45:44,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:45:44,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:45:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:45:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:44,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:44,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:45:44,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:44,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:45:44,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:45:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:45:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:45:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:45:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:45:44,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898183400] [2020-10-27 04:45:44,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:45:44,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:45:44,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655346057] [2020-10-27 04:45:44,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:45:44,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:45:44,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:45:44,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:45:44,496 INFO L87 Difference]: Start difference. First operand 786 states. Second operand 14 states. [2020-10-27 04:45:55,546 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 04:45:56,838 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 04:45:58,281 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:45:59,507 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:46:01,214 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:02,187 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:03,282 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:04,413 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:05,559 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:06,922 INFO L93 Difference]: Finished difference Result 1079 states and 1897 transitions. [2020-10-27 04:46:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:46:06,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 04:46:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:06,951 INFO L225 Difference]: With dead ends: 1079 [2020-10-27 04:46:06,951 INFO L226 Difference]: Without dead ends: 848 [2020-10-27 04:46:06,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:46:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-27 04:46:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 778. [2020-10-27 04:46:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-27 04:46:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1337 transitions. [2020-10-27 04:46:07,232 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1337 transitions. Word has length 188 [2020-10-27 04:46:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:07,233 INFO L481 AbstractCegarLoop]: Abstraction has 778 states and 1337 transitions. [2020-10-27 04:46:07,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:46:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1337 transitions. [2020-10-27 04:46:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 04:46:07,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:07,240 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] [2020-10-27 04:46:07,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:46:07,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:07,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:07,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1482097823, now seen corresponding path program 1 times [2020-10-27 04:46:07,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:07,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480014838] [2020-10-27 04:46:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 04:46:12,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:46:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-27 04:46:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:46:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:46:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:13,768 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:13,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:13,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:46:13,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:46:14,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-27 04:46:14,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:46:14,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:14,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:14,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:14,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:46:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:46:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:46:14,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:46:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:14,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:14,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:14,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:14,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:46:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:46:14,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:46:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:14,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:46:14,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 04:46:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:14,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:14,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 04:46:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:14,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:14,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:14,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:14,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:14,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:14,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:14,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480014838] [2020-10-27 04:46:14,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:14,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:14,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233781023] [2020-10-27 04:46:14,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:14,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:14,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:14,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:14,984 INFO L87 Difference]: Start difference. First operand 778 states and 1337 transitions. Second operand 11 states. [2020-10-27 04:46:16,131 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:46:23,669 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:24,167 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:46:24,957 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:25,495 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:26,237 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:27,033 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:27,797 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:28,570 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:29,353 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:30,117 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:32,195 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:46:32,838 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:46:33,209 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:46:33,788 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:34,008 INFO L93 Difference]: Finished difference Result 1359 states and 2291 transitions. [2020-10-27 04:46:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:46:34,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 04:46:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:34,024 INFO L225 Difference]: With dead ends: 1359 [2020-10-27 04:46:34,024 INFO L226 Difference]: Without dead ends: 1144 [2020-10-27 04:46:34,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:46:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2020-10-27 04:46:34,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 990. [2020-10-27 04:46:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-27 04:46:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1682 transitions. [2020-10-27 04:46:34,234 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1682 transitions. Word has length 252 [2020-10-27 04:46:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:34,235 INFO L481 AbstractCegarLoop]: Abstraction has 990 states and 1682 transitions. [2020-10-27 04:46:34,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:46:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1682 transitions. [2020-10-27 04:46:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 04:46:34,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:34,241 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] [2020-10-27 04:46:34,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:46:34,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:34,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:34,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2078500617, now seen corresponding path program 1 times [2020-10-27 04:46:34,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:34,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691230574] [2020-10-27 04:46:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:34,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:39,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:39,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 04:46:39,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:46:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-27 04:46:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:46:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-27 04:46:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:40,755 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:40,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:40,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:40,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:40,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:46:40,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:46:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-27 04:46:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:46:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:46:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:41,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:46:41,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:46:41,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:46:41,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:46:41,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:46:41,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:46:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:41,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:41,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:46:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:41,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:41,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 04:46:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:42,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:42,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:42,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:42,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:42,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 04:46:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 04:46:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:42,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:42,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:42,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:42,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:42,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691230574] [2020-10-27 04:46:42,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:42,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:42,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710950749] [2020-10-27 04:46:42,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:42,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:42,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:42,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:42,367 INFO L87 Difference]: Start difference. First operand 990 states and 1682 transitions. Second operand 11 states. [2020-10-27 04:46:43,762 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:46:44,863 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:46:45,969 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:46:47,105 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:00,638 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:01,167 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:01,622 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:02,953 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:03,349 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:04,446 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:05,066 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:06,416 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:07,001 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:08,386 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:09,046 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:47:10,988 INFO L93 Difference]: Finished difference Result 3194 states and 5427 transitions. [2020-10-27 04:47:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:47:10,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 04:47:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:47:11,003 INFO L225 Difference]: With dead ends: 3194 [2020-10-27 04:47:11,003 INFO L226 Difference]: Without dead ends: 2222 [2020-10-27 04:47:11,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:47:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2020-10-27 04:47:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1951. [2020-10-27 04:47:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-10-27 04:47:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3288 transitions. [2020-10-27 04:47:11,351 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3288 transitions. Word has length 256 [2020-10-27 04:47:11,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:47:11,352 INFO L481 AbstractCegarLoop]: Abstraction has 1951 states and 3288 transitions. [2020-10-27 04:47:11,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:47:11,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3288 transitions. [2020-10-27 04:47:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:47:11,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:47:11,361 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] [2020-10-27 04:47:11,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:47:11,361 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:47:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:47:11,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1098626365, now seen corresponding path program 1 times [2020-10-27 04:47:11,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:47:11,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439126989] [2020-10-27 04:47:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:47:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:13,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:16,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:16,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:47:16,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:47:16,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 04:47:16,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 04:47:16,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:17,968 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:18,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:18,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:18,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:18,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:47:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:18,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:18,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:18,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:47:18,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:18,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-27 04:47:18,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:18,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:47:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:47:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:18,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:47:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:18,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:18,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:47:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:18,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:18,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:47:18,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:47:18,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:18,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:18,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:18,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:47:18,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:19,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:47:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:19,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:19,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:19,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:47:19,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:19,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:47:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:19,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:19,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:19,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:47:19,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:19,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:19,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:47:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:19,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:47:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:19,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:47:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:19,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:19,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:19,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:47:19,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:19,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:47:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:19,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:47:19,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:47:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:47:19,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439126989] [2020-10-27 04:47:19,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:47:19,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:47:19,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597641974] [2020-10-27 04:47:19,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:47:19,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:47:19,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:47:19,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:47:19,485 INFO L87 Difference]: Start difference. First operand 1951 states and 3288 transitions. Second operand 11 states. [2020-10-27 04:47:20,657 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:47:21,736 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:47:22,880 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:47:23,986 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:37,753 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:38,401 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:38,847 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:40,270 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:40,669 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:41,816 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:42,437 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:43,895 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:44,525 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:45,929 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:46,583 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:47:48,836 INFO L93 Difference]: Finished difference Result 6301 states and 10620 transitions. [2020-10-27 04:47:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:47:48,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 04:47:48,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:47:48,863 INFO L225 Difference]: With dead ends: 6301 [2020-10-27 04:47:48,863 INFO L226 Difference]: Without dead ends: 4380 [2020-10-27 04:47:48,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:47:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2020-10-27 04:47:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 3855. [2020-10-27 04:47:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3855 states. [2020-10-27 04:47:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 6439 transitions. [2020-10-27 04:47:49,523 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 6439 transitions. Word has length 257 [2020-10-27 04:47:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:47:49,523 INFO L481 AbstractCegarLoop]: Abstraction has 3855 states and 6439 transitions. [2020-10-27 04:47:49,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:47:49,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 6439 transitions. [2020-10-27 04:47:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 04:47:49,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:47:49,537 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] [2020-10-27 04:47:49,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:47:49,537 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:47:49,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:47:49,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1563173404, now seen corresponding path program 1 times [2020-10-27 04:47:49,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:47:49,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293358623] [2020-10-27 04:47:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:47:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:49,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:54,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:54,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-27 04:47:54,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:47:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:47:54,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:54,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 04:47:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:55,857 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:55,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:55,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:55,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:47:55,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:55,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:47:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-27 04:47:56,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:47:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:47:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:47:56,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:56,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:56,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:56,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:47:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:47:56,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:47:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:47:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 04:47:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:56,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:56,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-27 04:47:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-27 04:47:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:56,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:56,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-27 04:47:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-27 04:47:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:47:57,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293358623] [2020-10-27 04:47:57,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:47:57,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:47:57,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219314227] [2020-10-27 04:47:57,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:47:57,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:47:57,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:47:57,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:47:57,089 INFO L87 Difference]: Start difference. First operand 3855 states and 6439 transitions. Second operand 11 states. [2020-10-27 04:47:58,311 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:47:59,540 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:48:00,852 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:48:04,517 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-27 04:48:25,095 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:48:25,750 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:26,186 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:27,002 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:28,232 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:28,692 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:29,090 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:30,229 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:30,881 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:31,502 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:32,686 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:33,334 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:33,915 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:35,089 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:35,663 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:36,194 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:48:38,265 INFO L93 Difference]: Finished difference Result 15472 states and 25889 transitions. [2020-10-27 04:48:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:48:38,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2020-10-27 04:48:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:48:38,321 INFO L225 Difference]: With dead ends: 15472 [2020-10-27 04:48:38,321 INFO L226 Difference]: Without dead ends: 11789 [2020-10-27 04:48:38,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:48:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11789 states. [2020-10-27 04:48:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11789 to 10525. [2020-10-27 04:48:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10525 states. [2020-10-27 04:48:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 17541 transitions. [2020-10-27 04:48:40,267 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 17541 transitions. Word has length 258 [2020-10-27 04:48:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:48:40,267 INFO L481 AbstractCegarLoop]: Abstraction has 10525 states and 17541 transitions. [2020-10-27 04:48:40,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:48:40,268 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 17541 transitions. [2020-10-27 04:48:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-27 04:48:40,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:48:40,297 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] [2020-10-27 04:48:40,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:48:40,297 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:48:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:48:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash 609824792, now seen corresponding path program 1 times [2020-10-27 04:48:40,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:48:40,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021612467] [2020-10-27 04:48:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:48:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:44,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:45,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:45,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 04:48:45,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:48:45,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:48:45,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:48:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-27 04:48:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:46,746 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:48:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:48:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:46,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:48:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:48:47,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-27 04:48:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:48:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:48:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:48:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:48:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:48:47,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:48:47,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:48:47,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:48:47,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:48:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:47,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:47,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:47,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:48:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 04:48:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:47,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:47,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-27 04:48:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:47,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:47,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 04:48:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:48:47,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021612467] [2020-10-27 04:48:47,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:48:47,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:48:47,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348163342] [2020-10-27 04:48:47,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:48:47,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:48:47,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:48:47,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:48:47,875 INFO L87 Difference]: Start difference. First operand 10525 states and 17541 transitions. Second operand 11 states. [2020-10-27 04:48:49,144 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:48:50,395 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:48:51,751 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:48:55,815 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 412 DAG size of output: 408