/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=DEEPEST --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/recursive/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:28:07,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:28:07,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:28:07,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:28:07,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:28:07,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:28:07,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:28:07,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:28:07,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:28:07,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:28:07,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:28:07,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:28:07,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:28:07,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:28:07,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:28:07,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:28:07,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:28:07,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:28:07,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:28:07,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:28:07,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:28:07,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:28:07,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:28:07,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:28:07,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:28:07,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:28:07,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:28:07,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:28:07,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:28:07,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:28:07,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:28:07,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:28:07,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:28:07,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:28:07,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:28:07,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:28:07,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:28:07,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:28:07,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:28:07,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:28:07,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:28:07,157 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 22:28:07,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:28:07,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:28:07,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:28:07,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:28:07,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:28:07,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:28:07,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:28:07,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:28:07,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:28:07,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:28:07,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:28:07,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:28:07,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:28:07,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:28:07,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:28:07,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:28:07,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:28:07,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:28:07,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:28:07,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:28:07,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:28:07,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:28:07,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:28:07,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:28:07,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:28:07,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:28:07,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:28:07,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:28:07,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:28:07,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:28:07,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:28:07,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:28:07,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:28:07,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:28:07,678 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:28:07,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-10-27 22:28:07,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51a003b1b/8bf1a6ac3b0a4f719ac6848d054ac4d0/FLAG83e2419d9 [2020-10-27 22:28:08,454 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:28:08,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-10-27 22:28:08,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51a003b1b/8bf1a6ac3b0a4f719ac6848d054ac4d0/FLAG83e2419d9 [2020-10-27 22:28:08,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51a003b1b/8bf1a6ac3b0a4f719ac6848d054ac4d0 [2020-10-27 22:28:08,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:28:08,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:28:08,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:28:08,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:28:08,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:28:08,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:28:08" (1/1) ... [2020-10-27 22:28:08,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b16a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:08, skipping insertion in model container [2020-10-27 22:28:08,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:28:08" (1/1) ... [2020-10-27 22:28:08,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:28:08,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:28:09,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:28:09,084 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:28:09,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:28:09,126 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:28:09,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09 WrapperNode [2020-10-27 22:28:09,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:28:09,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:28:09,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:28:09,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:28:09,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (1/1) ... [2020-10-27 22:28:09,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (1/1) ... [2020-10-27 22:28:09,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (1/1) ... [2020-10-27 22:28:09,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (1/1) ... [2020-10-27 22:28:09,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (1/1) ... [2020-10-27 22:28:09,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (1/1) ... [2020-10-27 22:28:09,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (1/1) ... [2020-10-27 22:28:09,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:28:09,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:28:09,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:28:09,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:28:09,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (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 22:28:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:28:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:28:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:28:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-10-27 22:28:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:28:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:28:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:28:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:28:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:28:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:28:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-10-27 22:28:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:28:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:28:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:28:09,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:28:09,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:28:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:28:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:28:09,780 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:28:09,780 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 22:28:09,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:28:09 BoogieIcfgContainer [2020-10-27 22:28:09,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:28:09,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:28:09,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:28:09,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:28:09,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:28:08" (1/3) ... [2020-10-27 22:28:09,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6b1a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:28:09, skipping insertion in model container [2020-10-27 22:28:09,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:09" (2/3) ... [2020-10-27 22:28:09,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6b1a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:28:09, skipping insertion in model container [2020-10-27 22:28:09,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:28:09" (3/3) ... [2020-10-27 22:28:09,795 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-10-27 22:28:09,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:28:09,812 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:28:09,828 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:28:09,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:28:09,868 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:28:09,868 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:28:09,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:28:09,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:28:09,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:28:09,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:28:09,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:28:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-27 22:28:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 22:28:09,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:09,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:09,894 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:09,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:09,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2107265492, now seen corresponding path program 1 times [2020-10-27 22:28:09,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:09,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455588179] [2020-10-27 22:28:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:10,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:10,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:28:10,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 22:28:10,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:28:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:28:10,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:10,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:28:10,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:10,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:10,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:10,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:10,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:28:10,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:10,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:10,517 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 22:28:10,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455588179] [2020-10-27 22:28:10,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:28:10,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:28:10,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276723180] [2020-10-27 22:28:10,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:28:10,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:10,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:28:10,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:28:10,543 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-27 22:28:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:10,872 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-10-27 22:28:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:28:10,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 22:28:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:10,886 INFO L225 Difference]: With dead ends: 41 [2020-10-27 22:28:10,886 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 22:28:10,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:28:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 22:28:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-27 22:28:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 22:28:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-27 22:28:10,947 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2020-10-27 22:28:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:10,948 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-27 22:28:10,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:28:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-27 22:28:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 22:28:10,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:10,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:10,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:28:10,951 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:10,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1001048603, now seen corresponding path program 1 times [2020-10-27 22:28:10,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:10,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454344922] [2020-10-27 22:28:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:10,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:11,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:11,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:28:11,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:11,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 22:28:11,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:28:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:28:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:11,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:11,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:28:11,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:11,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:28:11,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:11,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:11,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:11,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 22:28:11,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:28:11,268 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 22:28:11,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454344922] [2020-10-27 22:28:11,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:28:11,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:28:11,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247435155] [2020-10-27 22:28:11,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:28:11,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:11,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:28:11,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:28:11,273 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-10-27 22:28:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:11,523 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-10-27 22:28:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:28:11,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-27 22:28:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:11,526 INFO L225 Difference]: With dead ends: 30 [2020-10-27 22:28:11,526 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 22:28:11,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:28:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 22:28:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-27 22:28:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 22:28:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-27 22:28:11,537 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-10-27 22:28:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:11,538 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-27 22:28:11,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:28:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-27 22:28:11,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 22:28:11,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:11,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:11,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:28:11,540 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -768223736, now seen corresponding path program 1 times [2020-10-27 22:28:11,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:11,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407777065] [2020-10-27 22:28:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:12,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:12,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 22:28:12,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-27 22:28:12,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:28:12,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:12,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:28:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:12,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:28:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:12,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 22:28:12,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:28:12,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:28:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:12,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:12,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:28:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:28:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:28:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:28:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:12,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:12,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:12,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:12,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:12,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:28:12,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:28:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 22:28:12,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407777065] [2020-10-27 22:28:12,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:12,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:28:12,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286621630] [2020-10-27 22:28:12,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:28:12,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:12,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:28:12,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:28:12,567 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-10-27 22:28:12,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:12,844 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-10-27 22:28:12,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:28:12,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-27 22:28:12,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:12,846 INFO L225 Difference]: With dead ends: 41 [2020-10-27 22:28:12,847 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 22:28:12,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:28:12,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 22:28:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-27 22:28:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 22:28:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-27 22:28:12,856 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 28 [2020-10-27 22:28:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:12,857 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-27 22:28:12,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:28:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-27 22:28:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 22:28:12,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:12,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:12,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:28:12,859 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:12,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:12,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1973821333, now seen corresponding path program 1 times [2020-10-27 22:28:12,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:12,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331960031] [2020-10-27 22:28:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:12,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 22:28:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-27 22:28:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:28:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:28:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:13,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:13,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:13,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:28:13,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:13,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:13,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:13,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:13,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 22:28:13,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:28:13,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:13,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:28:13,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:13,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:13,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:13,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:28:13,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:13,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:13,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:28:13,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331960031] [2020-10-27 22:28:13,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:13,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:28:13,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334851818] [2020-10-27 22:28:13,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:28:13,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:28:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:28:13,570 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 8 states. [2020-10-27 22:28:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:13,838 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-27 22:28:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:28:13,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-27 22:28:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:13,840 INFO L225 Difference]: With dead ends: 33 [2020-10-27 22:28:13,840 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 22:28:13,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:28:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 22:28:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-27 22:28:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 22:28:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-27 22:28:13,850 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 29 [2020-10-27 22:28:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:13,850 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-27 22:28:13,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:28:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-27 22:28:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 22:28:13,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:13,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:13,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:28:13,852 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:13,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1325220322, now seen corresponding path program 1 times [2020-10-27 22:28:13,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:13,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396947265] [2020-10-27 22:28:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:13,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 22:28:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:28:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-27 22:28:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:28:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:28:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:14,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:14,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:14,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:14,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:28:14,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:14,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:14,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:14,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:14,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:14,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:28:14,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:28:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:28:14,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:28:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:14,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:14,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:14,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:14,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:28:14,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:14,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:14,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:14,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:14,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:14,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:14,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:28:14,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:28:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:28:14,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396947265] [2020-10-27 22:28:14,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:14,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:28:14,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954229788] [2020-10-27 22:28:14,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:28:14,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:14,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:28:14,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:28:14,524 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2020-10-27 22:28:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:15,004 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2020-10-27 22:28:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:28:15,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-27 22:28:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:15,007 INFO L225 Difference]: With dead ends: 55 [2020-10-27 22:28:15,007 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 22:28:15,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:28:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 22:28:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-27 22:28:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 22:28:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-27 22:28:15,017 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 30 [2020-10-27 22:28:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:15,017 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-27 22:28:15,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:28:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-27 22:28:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 22:28:15,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:15,019 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:15,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:28:15,020 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash 760168716, now seen corresponding path program 2 times [2020-10-27 22:28:15,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:15,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007089296] [2020-10-27 22:28:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:16,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:16,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 22:28:16,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-27 22:28:16,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:28:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:28:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:28:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:16,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:28:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:16,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:17,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:28:17,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-27 22:28:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:28:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:17,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:17,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:17,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:28:17,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:28:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:17,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:17,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:28:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:17,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:17,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:28:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:28:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:17,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:28:17,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 22:28:17,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007089296] [2020-10-27 22:28:17,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:17,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 22:28:17,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736969526] [2020-10-27 22:28:17,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:28:17,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:28:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:28:17,359 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-10-27 22:28:17,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:17,685 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-27 22:28:17,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:28:17,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-27 22:28:17,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:17,687 INFO L225 Difference]: With dead ends: 40 [2020-10-27 22:28:17,688 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 22:28:17,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:28:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 22:28:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-27 22:28:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 22:28:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-27 22:28:17,697 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 43 [2020-10-27 22:28:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:17,697 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-27 22:28:17,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:28:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-27 22:28:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 22:28:17,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:17,700 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:17,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:28:17,700 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1230620678, now seen corresponding path program 3 times [2020-10-27 22:28:17,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:17,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306481557] [2020-10-27 22:28:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:17,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:17,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:22,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:22,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:28:22,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:28:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 22:28:22,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:28:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:28:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:28:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 22:28:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:22,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:22,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:22,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:22,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:28:22,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:22,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:22,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:23,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:27,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 22:28:27,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:28:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4578 [2020-10-27 22:28:27,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:28:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:28:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:28:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:27,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:27,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:27,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 22:28:27,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:28:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:28:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:28:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:27,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:27,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:27,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:27,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:28:27,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:27,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:27,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:27,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:28:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:27,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:27,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 22:28:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:28:27,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:28:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:28:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:27,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:27,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:28:27,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:27,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:28:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:28:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 35 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 22:28:27,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306481557] [2020-10-27 22:28:27,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:27,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:28:27,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037717388] [2020-10-27 22:28:27,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:28:27,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:27,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:28:27,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:28:27,877 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 12 states. [2020-10-27 22:28:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:28,435 INFO L93 Difference]: Finished difference Result 67 states and 94 transitions. [2020-10-27 22:28:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:28:28,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-27 22:28:28,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:28,437 INFO L225 Difference]: With dead ends: 67 [2020-10-27 22:28:28,438 INFO L226 Difference]: Without dead ends: 42 [2020-10-27 22:28:28,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:28:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-27 22:28:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-27 22:28:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 22:28:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-27 22:28:28,449 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 56 [2020-10-27 22:28:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:28,449 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-27 22:28:28,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:28:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-27 22:28:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 22:28:28,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:28,453 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:28,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:28:28,453 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:28,453 INFO L82 PathProgramCache]: Analyzing trace with hash -234474472, now seen corresponding path program 4 times [2020-10-27 22:28:28,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:28,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036018049] [2020-10-27 22:28:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:29,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:33,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:33,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 22:28:33,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 22:28:33,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 22:28:33,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:28:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:28:33,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 22:28:33,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:33,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:28:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:34,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:34,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 22:28:38,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-27 22:28:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:28:38,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:28:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:28:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 22:28:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:38,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:40,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:40,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:28:40,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:28:40,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2180 [2020-10-27 22:28:40,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:28:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:40,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:28:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:40,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:40,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:40,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 22:28:40,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:28:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:40,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:28:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:40,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:40,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:40,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:40,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:40,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:28:40,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:40,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:40,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:40,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:40,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:40,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:40,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:40,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:28:40,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:28:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:41,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:28:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:41,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:41,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:28:41,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:28:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:41,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:28:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:28:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-27 22:28:41,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:28:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 22:28:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:41,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:41,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:41,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:28:41,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:28:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:41,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:41,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:41,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:28:41,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:41,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:41,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:28:41,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:41,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:28:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:41,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:41,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:41,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:28:41,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:41,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 80 proven. 109 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-27 22:28:41,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036018049] [2020-10-27 22:28:41,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:41,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:28:41,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514581575] [2020-10-27 22:28:41,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:28:41,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:41,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:28:41,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:28:41,556 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 11 states. [2020-10-27 22:28:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:42,356 INFO L93 Difference]: Finished difference Result 85 states and 123 transitions. [2020-10-27 22:28:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:28:42,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-10-27 22:28:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:42,359 INFO L225 Difference]: With dead ends: 85 [2020-10-27 22:28:42,359 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 22:28:42,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:28:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 22:28:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-10-27 22:28:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 22:28:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-27 22:28:42,387 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 84 [2020-10-27 22:28:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:42,389 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-27 22:28:42,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:28:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-27 22:28:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 22:28:42,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:42,392 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:42,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:28:42,392 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:42,393 INFO L82 PathProgramCache]: Analyzing trace with hash -217233873, now seen corresponding path program 5 times [2020-10-27 22:28:42,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:42,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91734635] [2020-10-27 22:28:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:47,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 22:28:47,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:28:47,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:28:47,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:28:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:28:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 22:28:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:47,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:47,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:47,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:28:47,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:47,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:28:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:47,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:47,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 22:28:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:28:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 22:28:52,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:28:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 22:28:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:52,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 22:28:52,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:28:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:28:52,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:52,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:52,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:28:52,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:52,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:28:52,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:28:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:52,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:52,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:28:52,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 22:28:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 22:28:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:28:52,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:28:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:28:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 22:28:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:52,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:52,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:28:52,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 24 proven. 88 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-27 22:28:52,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91734635] [2020-10-27 22:28:52,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:52,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 22:28:52,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761156249] [2020-10-27 22:28:52,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:28:52,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:28:52,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:28:52,965 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 10 states. [2020-10-27 22:28:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:53,526 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-27 22:28:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:28:53,527 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-27 22:28:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:53,529 INFO L225 Difference]: With dead ends: 72 [2020-10-27 22:28:53,529 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 22:28:53,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:28:53,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 22:28:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2020-10-27 22:28:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 22:28:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-27 22:28:53,544 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 70 [2020-10-27 22:28:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:53,544 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-27 22:28:53,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:28:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-27 22:28:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 22:28:53,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:53,547 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:53,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:28:53,547 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:53,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:53,548 INFO L82 PathProgramCache]: Analyzing trace with hash -667659703, now seen corresponding path program 6 times [2020-10-27 22:28:53,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:53,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546013901] [2020-10-27 22:28:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 22:28:53,564 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 22:28:53,564 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 22:28:53,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:28:53,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:28:53 BoogieIcfgContainer [2020-10-27 22:28:53,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 22:28:53,594 INFO L168 Benchmark]: Toolchain (without parser) took 44762.03 ms. Allocated memory was 155.2 MB in the beginning and 389.0 MB in the end (delta: 233.8 MB). Free memory was 130.1 MB in the beginning and 210.4 MB in the end (delta: -80.3 MB). Peak memory consumption was 154.7 MB. Max. memory is 8.0 GB. [2020-10-27 22:28:53,595 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory was 126.3 MB in the beginning and 126.1 MB in the end (delta: 102.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 22:28:53,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.63 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 120.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 22:28:53,596 INFO L168 Benchmark]: Boogie Preprocessor took 57.68 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 22:28:53,602 INFO L168 Benchmark]: RCFGBuilder took 590.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 106.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:28:53,602 INFO L168 Benchmark]: TraceAbstraction took 43805.06 ms. Allocated memory was 155.2 MB in the beginning and 389.0 MB in the end (delta: 233.8 MB). Free memory was 105.4 MB in the beginning and 210.4 MB in the end (delta: -105.0 MB). Peak memory consumption was 129.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:28:53,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory was 126.3 MB in the beginning and 126.1 MB in the end (delta: 102.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.63 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 120.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.68 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 590.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 106.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 43805.06 ms. Allocated memory was 155.2 MB in the beginning and 389.0 MB in the end (delta: 233.8 MB). Free memory was 105.4 MB in the beginning and 210.4 MB in the end (delta: -105.0 MB). Peak memory consumption was 129.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] int x = __VERIFIER_nondet_int(); [L31] CALL, EXPR fibonacci(x) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L31] RET, EXPR fibonacci(x) [L31] int result = fibonacci(x); [L32] COND FALSE !(x != 5 || result == 3) [L35] CALL reach_error() [L3] __assert_fail("0", "Fibonacci04.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.7s, OverallIterations: 10, TraceHistogramMax: 15, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 171 SDtfs, 323 SDslu, 229 SDs, 0 SdLazy, 875 SolverSat, 250 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 34 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 39.1s InterpolantComputationTime, 482 NumberOfCodeBlocks, 482 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 362 ConstructedInterpolants, 0 QuantifiedInterpolants, 56480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 419/681 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...