/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_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:35:41,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:35:41,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:35:41,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:35:41,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:35:41,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:35:41,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:35:41,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:35:41,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:35:41,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:35:41,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:35:41,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:35:41,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:35:41,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:35:41,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:35:41,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:35:41,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:35:41,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:35:41,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:35:41,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:35:41,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:35:41,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:35:41,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:35:41,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:35:41,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:35:41,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:35:41,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:35:41,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:35:41,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:35:41,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:35:41,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:35:41,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:35:41,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:35:41,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:35:41,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:35:41,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:35:41,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:35:41,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:35:41,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:35:41,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:35:41,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:35:41,270 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 04:35:41,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:35:41,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:35:41,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:35:41,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:35:41,300 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:35:41,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:35:41,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:35:41,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:35:41,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:35:41,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:35:41,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:35:41,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:35:41,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:35:41,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:35:41,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:35:41,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:35:41,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:35:41,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:35:41,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:35:41,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:35:41,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:35:41,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:35:41,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:35:41,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:35:41,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:35:41,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:35:41,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:35:41,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:35:41,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:35:41,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:35:41,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:35:41,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:35:41,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:35:41,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:35:41,794 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:35:41,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:35:41,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aabbd0b3/2f5c7e020b044fb9b6e76b25379c6461/FLAG18c637878 [2020-10-27 04:35:42,503 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:35:42,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:35:42,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aabbd0b3/2f5c7e020b044fb9b6e76b25379c6461/FLAG18c637878 [2020-10-27 04:35:42,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aabbd0b3/2f5c7e020b044fb9b6e76b25379c6461 [2020-10-27 04:35:42,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:35:42,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:35:42,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:35:42,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:35:42,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:35:42,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:35:42" (1/1) ... [2020-10-27 04:35:42,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdb63dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:42, skipping insertion in model container [2020-10-27 04:35:42,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:35:42" (1/1) ... [2020-10-27 04:35:42,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:35:42,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:35:43,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:35:43,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:35:43,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:35:43,312 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:35:43,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43 WrapperNode [2020-10-27 04:35:43,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:35:43,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:35:43,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:35:43,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:35:43,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (1/1) ... [2020-10-27 04:35:43,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (1/1) ... [2020-10-27 04:35:43,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (1/1) ... [2020-10-27 04:35:43,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (1/1) ... [2020-10-27 04:35:43,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (1/1) ... [2020-10-27 04:35:43,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (1/1) ... [2020-10-27 04:35:43,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (1/1) ... [2020-10-27 04:35:43,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:35:43,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:35:43,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:35:43,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:35:43,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (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 04:35:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:35:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:35:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:35:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:35:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:35:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:35:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:35:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:35:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:35:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:35:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:35:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:35:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:35:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:35:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:35:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:35:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:35:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:35:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:35:43,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:35:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:35:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:35:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:35:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:35:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:35:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:35:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:35:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:35:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:35:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:35:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:35:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:35:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:35:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:35:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:35:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:35:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:35:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:35:44,393 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:35:44,393 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:35:44,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:35:44 BoogieIcfgContainer [2020-10-27 04:35:44,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:35:44,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:35:44,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:35:44,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:35:44,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:35:42" (1/3) ... [2020-10-27 04:35:44,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d23246c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:35:44, skipping insertion in model container [2020-10-27 04:35:44,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:43" (2/3) ... [2020-10-27 04:35:44,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d23246c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:35:44, skipping insertion in model container [2020-10-27 04:35:44,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:35:44" (3/3) ... [2020-10-27 04:35:44,407 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:35:44,426 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:35:44,432 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:35:44,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:35:44,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:35:44,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:35:44,476 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:35:44,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:35:44,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:35:44,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:35:44,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:35:44,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:35:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-27 04:35:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 04:35:44,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:44,515 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] [2020-10-27 04:35:44,515 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:44,522 INFO L82 PathProgramCache]: Analyzing trace with hash -483094617, now seen corresponding path program 1 times [2020-10-27 04:35:44,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:44,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027390324] [2020-10-27 04:35:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:44,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:45,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:45,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 04:35:45,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-27 04:35:45,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:35:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:35:45,703 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:35:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:45,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:45,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:45,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:45,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:35:45,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:45,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:45,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:45,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:45,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:45,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:35:45,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:45,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:45,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:35:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:45,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:45,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:35:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 04:35:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:45,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:45,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:45,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:45,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:35:45,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:35:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:45,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:45,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:45,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:35:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 04:35:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:35:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:45,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:35:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:45,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:35:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:35:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:46,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:46,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:46,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:46,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:35:46,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:46,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:35:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:46,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:46,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:35:46,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:46,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:35:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:46,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:46,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:46,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:35:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:35:46,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:35:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:46,122 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 04:35:46,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027390324] [2020-10-27 04:35:46,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:46,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:35:46,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024557873] [2020-10-27 04:35:46,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:35:46,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:35:46,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:35:46,156 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 8 states. [2020-10-27 04:35:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:47,645 INFO L93 Difference]: Finished difference Result 273 states and 407 transitions. [2020-10-27 04:35:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:35:47,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-27 04:35:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:47,659 INFO L225 Difference]: With dead ends: 273 [2020-10-27 04:35:47,660 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 04:35:47,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:35:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 04:35:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2020-10-27 04:35:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-27 04:35:47,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 232 transitions. [2020-10-27 04:35:47,730 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 232 transitions. Word has length 68 [2020-10-27 04:35:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:47,730 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 232 transitions. [2020-10-27 04:35:47,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:35:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 232 transitions. [2020-10-27 04:35:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 04:35:47,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:47,734 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] [2020-10-27 04:35:47,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:35:47,735 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:47,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:47,736 INFO L82 PathProgramCache]: Analyzing trace with hash -39193943, now seen corresponding path program 1 times [2020-10-27 04:35:47,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:47,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195326075] [2020-10-27 04:35:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:47,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:48,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:48,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 04:35:48,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:48,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-27 04:35:48,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:35:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:35:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:35:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:48,815 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:35:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:35:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:48,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:48,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:35:48,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:35:48,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:35:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:48,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:48,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:48,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:35:48,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:35:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:49,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 04:35:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:49,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:49,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:49,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:49,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:35:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:49,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:49,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:49,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:49,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:35:49,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:35:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:49,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:49,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:49,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:49,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:35:49,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:49,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:35:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:49,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:49,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:49,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:49,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:49,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:49,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:35:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:49,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:49,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:49,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:49,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:35:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:49,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:49,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:35:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:49,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:49,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:35:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:49,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:35:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:49,278 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 04:35:49,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195326075] [2020-10-27 04:35:49,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:49,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:35:49,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060104506] [2020-10-27 04:35:49,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:35:49,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:49,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:35:49,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:35:49,286 INFO L87 Difference]: Start difference. First operand 153 states and 232 transitions. Second operand 14 states. [2020-10-27 04:35:49,642 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 04:35:49,942 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 04:35:50,316 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 04:35:50,604 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:35:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:35:52,582 INFO L93 Difference]: Finished difference Result 268 states and 395 transitions. [2020-10-27 04:35:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:35:52,587 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-27 04:35:52,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:35:52,590 INFO L225 Difference]: With dead ends: 268 [2020-10-27 04:35:52,590 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 04:35:52,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:35:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 04:35:52,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2020-10-27 04:35:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-27 04:35:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2020-10-27 04:35:52,630 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 68 [2020-10-27 04:35:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:35:52,632 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2020-10-27 04:35:52,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:35:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2020-10-27 04:35:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:35:52,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:35:52,638 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] [2020-10-27 04:35:52,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:35:52,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:35:52,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:35:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash -963829058, now seen corresponding path program 1 times [2020-10-27 04:35:52,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:35:52,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565197943] [2020-10-27 04:35:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:35:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:57,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:57,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:35:57,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:35:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:35:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:35:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 04:35:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 04:35:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:57,998 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:35:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:35:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:35:58,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:35:58,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:35:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:35:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:35:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:35:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 04:35:58,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:35:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:35:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:35:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:35:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:35:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:35:58,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:35:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:35:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:35:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:58,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:35:58,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:58,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:35:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:58,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:35:58,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:35:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:35:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:35:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:58,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:35:58,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:58,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:35:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:35:58,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:35:58,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:35:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:35:58,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:35:58,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:35:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:35:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:35:58,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:35:58,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:35:58,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:35:58,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:35:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:35:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:35:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:35:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:35:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:35:58,839 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 04:35:58,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565197943] [2020-10-27 04:35:58,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:35:58,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 04:35:58,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639940042] [2020-10-27 04:35:58,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:35:58,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:35:58,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:35:58,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:35:58,843 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand 19 states. [2020-10-27 04:35:59,181 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:35:59,458 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-27 04:35:59,738 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 04:36:00,026 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 04:36:00,322 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 04:36:05,927 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 04:36:06,227 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:36:06,540 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 04:36:06,880 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 04:36:07,254 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 04:36:16,371 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-27 04:36:16,595 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 04:36:20,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:20,838 INFO L93 Difference]: Finished difference Result 1519 states and 2276 transitions. [2020-10-27 04:36:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2020-10-27 04:36:20,839 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 99 [2020-10-27 04:36:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:20,856 INFO L225 Difference]: With dead ends: 1519 [2020-10-27 04:36:20,856 INFO L226 Difference]: Without dead ends: 1416 [2020-10-27 04:36:20,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4901 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2577, Invalid=10995, Unknown=0, NotChecked=0, Total=13572 [2020-10-27 04:36:20,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-10-27 04:36:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1200. [2020-10-27 04:36:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-10-27 04:36:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1751 transitions. [2020-10-27 04:36:21,092 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1751 transitions. Word has length 99 [2020-10-27 04:36:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:21,093 INFO L481 AbstractCegarLoop]: Abstraction has 1200 states and 1751 transitions. [2020-10-27 04:36:21,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:36:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1751 transitions. [2020-10-27 04:36:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:36:21,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:21,098 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] [2020-10-27 04:36:21,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:36:21,099 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1813193698, now seen corresponding path program 1 times [2020-10-27 04:36:21,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:21,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257643459] [2020-10-27 04:36:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 04:36:26,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:36:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:36:26,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:36:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:36:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,490 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:36:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:36:26,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:36:26,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:36:26,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:26,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:36:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:36:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:36:26,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:26,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:36:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:26,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:36:26,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:26,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:36:26,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:36:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:26,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:36:26,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:36:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:36:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:36:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:26,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:36:26,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:26,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:26,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:36:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:26,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:36:26,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:36:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:26,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:36:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:36:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:26,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:26,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:26,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:26,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:26,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:26,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:26,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:26,841 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 04:36:26,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257643459] [2020-10-27 04:36:26,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:26,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:36:26,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847540084] [2020-10-27 04:36:26,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:36:26,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:26,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:36:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:36:26,844 INFO L87 Difference]: Start difference. First operand 1200 states and 1751 transitions. Second operand 11 states. [2020-10-27 04:36:27,139 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 04:36:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:30,300 INFO L93 Difference]: Finished difference Result 3480 states and 5070 transitions. [2020-10-27 04:36:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:36:30,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-27 04:36:30,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:30,318 INFO L225 Difference]: With dead ends: 3480 [2020-10-27 04:36:30,319 INFO L226 Difference]: Without dead ends: 2330 [2020-10-27 04:36:30,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:36:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2020-10-27 04:36:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2206. [2020-10-27 04:36:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2206 states. [2020-10-27 04:36:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3213 transitions. [2020-10-27 04:36:30,534 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3213 transitions. Word has length 100 [2020-10-27 04:36:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:30,536 INFO L481 AbstractCegarLoop]: Abstraction has 2206 states and 3213 transitions. [2020-10-27 04:36:30,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:36:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3213 transitions. [2020-10-27 04:36:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:36:30,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:30,544 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] [2020-10-27 04:36:30,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:36:30,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:30,545 INFO L82 PathProgramCache]: Analyzing trace with hash 745295687, now seen corresponding path program 1 times [2020-10-27 04:36:30,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:30,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866066722] [2020-10-27 04:36:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:30,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:35,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:35,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 04:36:35,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:36:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:36:35,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 04:36:35,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:36:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:35,853 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:36:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:36:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:35,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:35,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:35,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:36:35,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:36:35,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:36:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:36:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:35,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:35,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:36:35,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:35,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:35,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:36:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:35,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:35,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:36:35,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:35,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:36:35,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:36:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:36:35,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:36:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:36,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:36,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:36,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:36:36,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:36:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:36:36,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:36:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:36,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:36,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:36,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:36,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:36,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:36,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:36:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:36,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:36,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:36,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:36,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:36,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:36,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 04:36:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:36,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:36,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:36,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:36,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:36,141 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 04:36:36,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866066722] [2020-10-27 04:36:36,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:36,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:36:36,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825468048] [2020-10-27 04:36:36,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:36:36,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:36,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:36:36,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:36:36,144 INFO L87 Difference]: Start difference. First operand 2206 states and 3213 transitions. Second operand 11 states. [2020-10-27 04:36:36,417 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 04:36:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:39,060 INFO L93 Difference]: Finished difference Result 6450 states and 9347 transitions. [2020-10-27 04:36:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:36:39,061 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-10-27 04:36:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:39,085 INFO L225 Difference]: With dead ends: 6450 [2020-10-27 04:36:39,085 INFO L226 Difference]: Without dead ends: 4294 [2020-10-27 04:36:39,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:36:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2020-10-27 04:36:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 4071. [2020-10-27 04:36:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4071 states. [2020-10-27 04:36:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 5896 transitions. [2020-10-27 04:36:39,439 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 5896 transitions. Word has length 101 [2020-10-27 04:36:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:39,440 INFO L481 AbstractCegarLoop]: Abstraction has 4071 states and 5896 transitions. [2020-10-27 04:36:39,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:36:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 5896 transitions. [2020-10-27 04:36:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:36:39,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:39,442 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] [2020-10-27 04:36:39,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:36:39,442 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:39,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:39,443 INFO L82 PathProgramCache]: Analyzing trace with hash 989800226, now seen corresponding path program 1 times [2020-10-27 04:36:39,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:39,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598572500] [2020-10-27 04:36:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:36:44,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:36:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:36:44,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:36:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:36:44,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:44,792 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:36:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:44,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:36:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:36:44,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:36:44,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:44,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:36:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:36:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:36:44,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:44,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:44,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:44,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:44,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:36:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:44,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:36:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:36:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:44,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:36:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:44,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:44,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:36:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:44,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:44,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:36:44,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:36:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:36:44,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:45,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:36:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:45,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:45,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:45,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:45,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:45,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:36:45,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:45,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:36:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:45,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:45,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:45,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:45,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:45,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:45,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:45,083 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 04:36:45,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598572500] [2020-10-27 04:36:45,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:45,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:36:45,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134506623] [2020-10-27 04:36:45,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:36:45,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:45,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:36:45,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:36:45,088 INFO L87 Difference]: Start difference. First operand 4071 states and 5896 transitions. Second operand 11 states. [2020-10-27 04:36:45,391 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 04:36:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:48,325 INFO L93 Difference]: Finished difference Result 11921 states and 17152 transitions. [2020-10-27 04:36:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:36:48,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-27 04:36:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:48,377 INFO L225 Difference]: With dead ends: 11921 [2020-10-27 04:36:48,377 INFO L226 Difference]: Without dead ends: 7900 [2020-10-27 04:36:48,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:36:48,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7900 states. [2020-10-27 04:36:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7900 to 7501. [2020-10-27 04:36:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7501 states. [2020-10-27 04:36:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7501 states to 7501 states and 10776 transitions. [2020-10-27 04:36:49,009 INFO L78 Accepts]: Start accepts. Automaton has 7501 states and 10776 transitions. Word has length 102 [2020-10-27 04:36:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:49,011 INFO L481 AbstractCegarLoop]: Abstraction has 7501 states and 10776 transitions. [2020-10-27 04:36:49,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:36:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 7501 states and 10776 transitions. [2020-10-27 04:36:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 04:36:49,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:49,013 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] [2020-10-27 04:36:49,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:36:49,013 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:49,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:49,014 INFO L82 PathProgramCache]: Analyzing trace with hash -481789137, now seen corresponding path program 1 times [2020-10-27 04:36:49,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:49,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752919638] [2020-10-27 04:36:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:36:50,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:36:50,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1375 [2020-10-27 04:36:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 04:36:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:36:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:50,684 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:36:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:50,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:36:50,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:50,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:36:50,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:36:50,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:50,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:36:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:36:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:36:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:36:50,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:50,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:50,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:36:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:50,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:50,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:36:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:36:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:50,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:36:50,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:36:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:50,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:50,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:36:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:50,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:50,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:50,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:50,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:50,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:36:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:50,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:50,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:50,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:36:50,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:36:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:36:50,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:36:50,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:36:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:51,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:51,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:51,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:51,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:51,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:51,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:51,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:51,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:51,055 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 04:36:51,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752919638] [2020-10-27 04:36:51,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:51,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:36:51,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584681600] [2020-10-27 04:36:51,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:36:51,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:51,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:36:51,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:36:51,067 INFO L87 Difference]: Start difference. First operand 7501 states and 10776 transitions. Second operand 11 states. [2020-10-27 04:36:51,503 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 04:36:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:36:54,961 INFO L93 Difference]: Finished difference Result 21931 states and 31268 transitions. [2020-10-27 04:36:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:36:54,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-27 04:36:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:36:55,062 INFO L225 Difference]: With dead ends: 21931 [2020-10-27 04:36:55,062 INFO L226 Difference]: Without dead ends: 14480 [2020-10-27 04:36:55,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:36:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2020-10-27 04:36:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 13773. [2020-10-27 04:36:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13773 states. [2020-10-27 04:36:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13773 states to 13773 states and 19572 transitions. [2020-10-27 04:36:56,278 INFO L78 Accepts]: Start accepts. Automaton has 13773 states and 19572 transitions. Word has length 103 [2020-10-27 04:36:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:36:56,279 INFO L481 AbstractCegarLoop]: Abstraction has 13773 states and 19572 transitions. [2020-10-27 04:36:56,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:36:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13773 states and 19572 transitions. [2020-10-27 04:36:56,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 04:36:56,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:36:56,280 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] [2020-10-27 04:36:56,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:36:56,281 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:36:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:36:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1912915108, now seen corresponding path program 1 times [2020-10-27 04:36:56,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:36:56,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712631668] [2020-10-27 04:36:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:36:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:57,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:57,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:36:57,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:36:57,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1446 [2020-10-27 04:36:57,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:57,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:36:57,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:36:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 04:36:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,096 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:36:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:36:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:36:58,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:36:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:36:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:36:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:36:58,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:36:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:36:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:36:58,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:36:58,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:36:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:58,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:36:58,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:36:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:58,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:36:58,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:36:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:58,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:36:58,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:36:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:36:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:58,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:36:58,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:36:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:36:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:58,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:36:58,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:36:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:36:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:36:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:36:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:36:58,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:36:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:36:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:36:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:36:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 04:36:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:36:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:36:58,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:36:58,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:36:58,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:36:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:36:58,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:36:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:36:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:36:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:36:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:36:58,664 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 04:36:58,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712631668] [2020-10-27 04:36:58,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:36:58,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 04:36:58,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918395022] [2020-10-27 04:36:58,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 04:36:58,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:36:58,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 04:36:58,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:36:58,667 INFO L87 Difference]: Start difference. First operand 13773 states and 19572 transitions. Second operand 18 states. [2020-10-27 04:36:59,100 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:36:59,475 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:00,501 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:01,258 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:37:01,594 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:37:01,903 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:02,978 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:37:03,341 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:37:03,669 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:37:04,030 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:37:04,375 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:37:04,981 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:37:05,353 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 04:37:07,129 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:37:07,523 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:37:07,855 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:08,244 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:37:08,581 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:08,948 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:37:09,285 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:09,670 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:09,999 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:10,178 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 04:37:10,682 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:11,010 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:11,391 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:11,712 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:12,108 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 04:37:12,558 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:12,846 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 04:37:15,775 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:37:16,122 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:16,491 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:37:16,830 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:17,202 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:37:17,556 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:17,941 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:37:18,308 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:37:18,703 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:19,039 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:19,404 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:19,755 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:19,939 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 04:37:20,332 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:20,672 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:21,034 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:21,393 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:21,774 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:22,121 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:22,492 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:37:22,821 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:37:23,390 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:37:23,700 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 04:37:24,128 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:24,622 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:37:24,929 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 04:37:25,251 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:37:25,568 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 04:37:26,170 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 04:37:26,503 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 04:37:27,937 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 04:37:28,280 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 04:37:28,710 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:37:29,567 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 04:37:37,283 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 04:37:37,781 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-27 04:37:40,552 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 04:37:43,581 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:44,080 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:46,783 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:47,448 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:37:47,947 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:37:51,178 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:51,385 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 04:37:51,542 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:51,718 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:52,525 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:37:52,723 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 04:37:52,907 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 04:37:53,057 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:37:54,483 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:55,264 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:37:55,788 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:37:58,812 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:59,042 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:37:59,205 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:38:01,647 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 04:38:02,780 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 04:38:03,405 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 04:38:03,604 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 04:38:03,797 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 04:38:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:27,178 INFO L93 Difference]: Finished difference Result 337016 states and 499952 transitions. [2020-10-27 04:38:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2020-10-27 04:38:27,179 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-10-27 04:38:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:29,434 INFO L225 Difference]: With dead ends: 337016 [2020-10-27 04:38:29,434 INFO L226 Difference]: Without dead ends: 323293 [2020-10-27 04:38:29,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42592 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=8249, Invalid=89407, Unknown=0, NotChecked=0, Total=97656 [2020-10-27 04:38:30,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323293 states. [2020-10-27 04:38:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323293 to 314398. [2020-10-27 04:38:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314398 states. [2020-10-27 04:38:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314398 states to 314398 states and 425869 transitions. [2020-10-27 04:38:55,184 INFO L78 Accepts]: Start accepts. Automaton has 314398 states and 425869 transitions. Word has length 104 [2020-10-27 04:38:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:55,185 INFO L481 AbstractCegarLoop]: Abstraction has 314398 states and 425869 transitions. [2020-10-27 04:38:55,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 04:38:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 314398 states and 425869 transitions. [2020-10-27 04:38:55,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:38:55,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:55,201 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] [2020-10-27 04:38:55,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:38:55,201 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1170823528, now seen corresponding path program 1 times [2020-10-27 04:38:55,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:55,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618648967] [2020-10-27 04:38:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:55,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:55,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 04:38:55,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:55,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-27 04:38:55,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:38:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-27 04:38:55,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:38:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,379 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 04:38:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:56,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:38:56,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:38:56,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:56,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:38:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:38:56,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:38:56,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:38:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:38:56,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:38:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:38:56,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:38:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:38:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:38:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:38:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:38:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:56,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 04:38:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:56,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:56,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:56,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:56,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:38:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:56,706 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 04:38:56,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618648967] [2020-10-27 04:38:56,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:56,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:38:56,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648264356] [2020-10-27 04:38:56,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:38:56,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:56,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:38:56,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:38:56,708 INFO L87 Difference]: Start difference. First operand 314398 states and 425869 transitions. Second operand 14 states. [2020-10-27 04:38:58,996 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 04:38:59,334 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 04:38:59,769 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 04:39:00,126 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 173