/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:45:47,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:45:47,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:45:47,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:45:47,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:45:47,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:45:47,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:45:47,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:45:47,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:45:47,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:45:47,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:45:47,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:45:47,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:45:47,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:45:47,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:45:47,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:45:47,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:45:47,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:45:47,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:45:47,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:45:47,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:45:47,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:45:47,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:45:47,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:45:47,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:45:47,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:45:47,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:45:47,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:45:47,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:45:47,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:45:47,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:45:47,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:45:47,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:45:47,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:45:47,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:45:47,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:45:47,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:45:47,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:45:47,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:45:47,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:45:47,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:45:47,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:45:47,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:45:47,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:45:47,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:45:47,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:45:47,293 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:45:47,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:45:47,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:45:47,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:45:47,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:45:47,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:45:47,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:45:47,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:45:47,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:45:47,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:45:47,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:45:47,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:45:47,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:45:47,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:45:47,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:45:47,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:45:47,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:45:47,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:45:47,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:45:47,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:45:47,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:45:47,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:45:47,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:45:47,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:45:47,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:45:47,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:45:47,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:45:47,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:45:47,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:45:47,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:45:47,706 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:45:47,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:47,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2ece9434/6c646b623b174a94a1e9e9c6ae705bee/FLAGee317b2cc [2020-10-27 04:45:48,585 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:45:48,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:48,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2ece9434/6c646b623b174a94a1e9e9c6ae705bee/FLAGee317b2cc [2020-10-27 04:45:48,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2ece9434/6c646b623b174a94a1e9e9c6ae705bee [2020-10-27 04:45:48,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:45:48,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:45:48,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:48,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:45:48,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:45:48,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:48" (1/1) ... [2020-10-27 04:45:48,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e00a6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:48, skipping insertion in model container [2020-10-27 04:45:48,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:48" (1/1) ... [2020-10-27 04:45:48,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:45:48,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:45:49,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:49,563 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:45:49,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:45:49,791 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:45:49,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49 WrapperNode [2020-10-27 04:45:49,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:45:49,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:45:49,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:45:49,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:45:49,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... [2020-10-27 04:45:49,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... [2020-10-27 04:45:49,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... [2020-10-27 04:45:49,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... [2020-10-27 04:45:49,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... [2020-10-27 04:45:49,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... [2020-10-27 04:45:49,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... [2020-10-27 04:45:49,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:45:49,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:45:49,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:45:49,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:45:49,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:45:50,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:45:50,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:45:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:45:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:45:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:45:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:45:50,076 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:45:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 04:45:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 04:45:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:45:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:45:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:45:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:45:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:45:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:45:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:45:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:45:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:45:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:45:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:45:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:45:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:45:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:45:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:45:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:45:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:45:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:45:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:45:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 04:45:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:45:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:45:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:45:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:45:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:45:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:45:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:45:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:45:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:45:53,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:45:53,547 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:45:53,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:53 BoogieIcfgContainer [2020-10-27 04:45:53,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:45:53,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:45:53,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:45:53,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:45:53,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:48" (1/3) ... [2020-10-27 04:45:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cd1314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:53, skipping insertion in model container [2020-10-27 04:45:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:49" (2/3) ... [2020-10-27 04:45:53,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cd1314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:53, skipping insertion in model container [2020-10-27 04:45:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:53" (3/3) ... [2020-10-27 04:45:53,562 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-27 04:45:53,574 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:45:53,581 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:45:53,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:45:53,626 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:45:53,627 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:45:53,627 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:45:53,627 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:45:53,627 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:45:53,627 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:45:53,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:45:53,628 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:45:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states. [2020-10-27 04:45:53,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 04:45:53,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:45:53,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:45:53,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:45:53,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:45:53,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1636931314, now seen corresponding path program 1 times [2020-10-27 04:45:53,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:45:53,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842338388] [2020-10-27 04:45:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:45:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:45:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:45:58,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:45:58,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 04:45:58,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:45:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3801 [2020-10-27 04:45:58,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:45:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:45:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 04:45:58,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:45:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:46:00,264 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:00,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:00,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:00,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:00,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:46:00,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:00,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:00,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:00,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:00,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:46:01,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-27 04:46:01,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:46:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 04:46:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:01,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:46:01,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:46:01,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:01,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:01,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 04:46:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:01,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:01,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:46:01,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 04:46:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:01,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:46:01,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:01,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 04:46:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:01,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:01,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:46:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:01,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:01,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:46:01,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 04:46:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:01,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:46:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:01,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 04:46:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:01,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:01,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:01,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:01,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:01,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:01,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:01,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:01,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:02,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842338388] [2020-10-27 04:46:02,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:02,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:46:02,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589027667] [2020-10-27 04:46:02,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:46:02,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:46:02,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:46:02,092 INFO L87 Difference]: Start difference. First operand 776 states. Second operand 14 states. [2020-10-27 04:46:16,326 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 04:46:18,535 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 04:46:20,983 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:46:23,107 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 04:46:25,214 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:26,533 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:28,064 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:29,590 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:31,125 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:46:32,950 INFO L93 Difference]: Finished difference Result 1054 states and 1862 transitions. [2020-10-27 04:46:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:46:32,952 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 04:46:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:46:32,979 INFO L225 Difference]: With dead ends: 1054 [2020-10-27 04:46:32,979 INFO L226 Difference]: Without dead ends: 833 [2020-10-27 04:46:32,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:46:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-27 04:46:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 768. [2020-10-27 04:46:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-10-27 04:46:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1322 transitions. [2020-10-27 04:46:33,252 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1322 transitions. Word has length 188 [2020-10-27 04:46:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:46:33,253 INFO L481 AbstractCegarLoop]: Abstraction has 768 states and 1322 transitions. [2020-10-27 04:46:33,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:46:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1322 transitions. [2020-10-27 04:46:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 04:46:33,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:46:33,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:46:33,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:46:33,264 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:46:33,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:46:33,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1767486124, now seen corresponding path program 1 times [2020-10-27 04:46:33,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:46:33,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384541693] [2020-10-27 04:46:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:46:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:36,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:38,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:38,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 04:46:38,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:46:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 04:46:38,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 04:46:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:46:38,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:46:40,716 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:46:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:46:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:40,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:40,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:46:40,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:40,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:46:40,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:40,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:46:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:46:41,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-27 04:46:41,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 04:46:41,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:46:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:46:41,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:46:41,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:46:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:46:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:46:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:46:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:41,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:46:41,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:46:41,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:46:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:46:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 04:46:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:41,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:41,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 04:46:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:41,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:41,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 04:46:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:41,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:41,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:41,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:46:41,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 04:46:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:42,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:42,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:46:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:46:42,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:42,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:46:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 04:46:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:46:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:46:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:46:42,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:46:42,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:46:42,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:46:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:46:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:46:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:46:42,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:46:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:46:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:46:42,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384541693] [2020-10-27 04:46:42,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:46:42,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:46:42,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558508202] [2020-10-27 04:46:42,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:46:42,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:46:42,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:46:42,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:46:42,223 INFO L87 Difference]: Start difference. First operand 768 states and 1322 transitions. Second operand 11 states. [2020-10-27 04:46:44,394 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:46:53,691 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:54,631 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:46:55,587 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:56,125 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:57,525 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:46:58,159 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:46:59,662 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:47:00,265 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:01,699 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:47:02,298 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:05,756 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 04:47:06,865 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:47:07,597 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:47:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:47:07,661 INFO L93 Difference]: Finished difference Result 1305 states and 2212 transitions. [2020-10-27 04:47:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:47:07,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 04:47:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:47:07,677 INFO L225 Difference]: With dead ends: 1305 [2020-10-27 04:47:07,677 INFO L226 Difference]: Without dead ends: 1100 [2020-10-27 04:47:07,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:47:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-10-27 04:47:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 961. [2020-10-27 04:47:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-27 04:47:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1634 transitions. [2020-10-27 04:47:07,877 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1634 transitions. Word has length 252 [2020-10-27 04:47:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:47:07,878 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1634 transitions. [2020-10-27 04:47:07,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:47:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1634 transitions. [2020-10-27 04:47:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 04:47:07,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:47:07,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:47:07,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:47:07,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:47:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:47:07,886 INFO L82 PathProgramCache]: Analyzing trace with hash 726239212, now seen corresponding path program 1 times [2020-10-27 04:47:07,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:47:07,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356734939] [2020-10-27 04:47:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:47:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:08,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:13,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:13,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 04:47:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:47:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 04:47:13,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:47:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-27 04:47:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:15,559 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:47:15,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:47:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:47:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:47:15,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:47:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:16,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:16,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:47:16,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-27 04:47:16,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:47:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:47:16,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:47:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:16,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:47:16,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:47:16,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:47:16,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:47:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:16,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:16,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:47:16,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:16,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:47:16,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:47:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:47:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 04:47:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:16,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:16,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:16,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:47:16,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:16,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:16,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 04:47:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:16,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:47:16,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 04:47:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:17,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:17,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:17,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:17,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:47:17,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 04:47:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:47:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:17,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:47:17,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:47:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:47:17,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 04:47:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:47:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:47:17,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:47:17,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:47:17,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:47:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:47:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:47:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:47:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:47:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:47:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:47:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:47:17,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356734939] [2020-10-27 04:47:17,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:47:17,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:47:17,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112944590] [2020-10-27 04:47:17,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:47:17,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:47:17,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:47:17,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:47:17,452 INFO L87 Difference]: Start difference. First operand 961 states and 1634 transitions. Second operand 11 states. [2020-10-27 04:47:19,781 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:47:21,909 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:47:24,165 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:47:29,942 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-27 04:47:52,601 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:47:53,533 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:54,315 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:47:55,454 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:57,021 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:47:57,767 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:47:58,452 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:00,046 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:00,962 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:01,700 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:03,390 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:04,275 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:04,992 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:06,564 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:07,429 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:48:08,132 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:48:10,742 INFO L93 Difference]: Finished difference Result 3827 states and 6526 transitions. [2020-10-27 04:48:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:48:10,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 04:48:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:48:10,761 INFO L225 Difference]: With dead ends: 3827 [2020-10-27 04:48:10,762 INFO L226 Difference]: Without dead ends: 2925 [2020-10-27 04:48:10,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:48:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-10-27 04:48:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 2603. [2020-10-27 04:48:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2603 states. [2020-10-27 04:48:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 4423 transitions. [2020-10-27 04:48:11,285 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 4423 transitions. Word has length 256 [2020-10-27 04:48:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:48:11,286 INFO L481 AbstractCegarLoop]: Abstraction has 2603 states and 4423 transitions. [2020-10-27 04:48:11,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:48:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 4423 transitions. [2020-10-27 04:48:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:48:11,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:48:11,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:48:11,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:48:11,297 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:48:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:48:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash 631511031, now seen corresponding path program 1 times [2020-10-27 04:48:11,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:48:11,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274699169] [2020-10-27 04:48:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:48:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:16,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:16,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:48:16,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:48:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 04:48:16,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:48:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 04:48:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:18,669 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:48:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:48:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:18,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:18,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:48:18,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:48:18,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:18,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:48:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:19,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:19,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:48:19,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-27 04:48:19,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:48:19,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:19,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:48:19,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:48:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:19,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:19,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:48:19,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:48:19,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:48:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:48:19,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:48:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:19,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:19,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:48:19,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:48:19,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:48:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:48:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:48:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:48:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:19,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:19,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:19,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:19,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:48:19,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:19,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:19,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:19,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:19,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:48:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:19,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:19,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:19,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:19,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:19,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:48:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:20,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:20,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:20,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:48:20,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:20,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:20,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:20,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:48:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:20,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:20,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:48:20,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:20,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:48:20,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:48:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:20,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:48:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:48:20,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:48:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:48:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:48:20,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:48:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:48:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:48:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:48:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:48:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:48:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:48:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:48:20,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274699169] [2020-10-27 04:48:20,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:48:20,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:48:20,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514639802] [2020-10-27 04:48:20,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:48:20,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:48:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:48:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:48:20,411 INFO L87 Difference]: Start difference. First operand 2603 states and 4423 transitions. Second operand 11 states. [2020-10-27 04:48:22,619 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:48:24,820 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-27 04:48:27,671 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 04:48:31,939 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-27 04:48:56,948 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 04:48:58,006 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:48:58,818 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:48:59,746 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:01,614 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:02,566 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:03,132 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:05,054 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:06,237 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:06,906 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:08,697 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:09,839 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:10,479 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:12,189 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:49:13,433 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:49:14,062 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:49:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:49:17,641 INFO L93 Difference]: Finished difference Result 10169 states and 17289 transitions. [2020-10-27 04:49:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:49:17,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-27 04:49:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:49:17,692 INFO L225 Difference]: With dead ends: 10169 [2020-10-27 04:49:17,692 INFO L226 Difference]: Without dead ends: 7723 [2020-10-27 04:49:17,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:49:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7723 states. [2020-10-27 04:49:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7723 to 6999. [2020-10-27 04:49:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6999 states. [2020-10-27 04:49:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 11844 transitions. [2020-10-27 04:49:19,148 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 11844 transitions. Word has length 257 [2020-10-27 04:49:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:49:19,149 INFO L481 AbstractCegarLoop]: Abstraction has 6999 states and 11844 transitions. [2020-10-27 04:49:19,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:49:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 11844 transitions. [2020-10-27 04:49:19,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-27 04:49:19,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:49:19,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:49:19,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:49:19,172 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:49:19,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:49:19,173 INFO L82 PathProgramCache]: Analyzing trace with hash 179927755, now seen corresponding path program 1 times [2020-10-27 04:49:19,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:49:19,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948499831] [2020-10-27 04:49:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:49:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 04:49:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:49:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 04:49:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:49:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:49:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 04:49:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:26,717 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 04:49:26,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:49:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:26,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:26,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:49:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:49:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:49:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:49:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:49:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:49:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:27,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:27,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 04:49:27,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-27 04:49:27,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:49:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:49:27,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:49:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 04:49:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:27,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:27,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:49:27,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:49:27,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:49:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:49:27,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:49:27,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 04:49:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:27,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:27,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:49:27,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:49:27,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:49:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:49:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:49:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:27,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 04:49:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:27,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:27,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:27,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:49:27,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:27,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:49:27,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:49:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:49:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:49:27,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-27 04:49:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:27,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:49:27,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:49:27,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:49:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:49:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:49:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-27 04:49:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:27,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:27,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:49:27,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:27,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:49:27,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:49:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:49:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:49:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:28,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 04:49:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:28,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:28,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:49:28,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:49:28,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:49:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:49:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:49:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-27 04:49:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:49:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:49:28,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:49:28,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:49:28,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:49:28,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:49:28,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:49:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:49:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:49:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:49:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:49:28,210 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 04:49:28,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948499831] [2020-10-27 04:49:28,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:49:28,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:49:28,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942474197] [2020-10-27 04:49:28,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:49:28,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:49:28,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:49:28,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:49:28,213 INFO L87 Difference]: Start difference. First operand 6999 states and 11844 transitions. Second operand 11 states. [2020-10-27 04:49:30,528 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 04:49:32,802 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 04:49:35,141 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 408