/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/res2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:54:53,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:54:53,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:54:53,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:54:53,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:54:53,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:54:53,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:54:53,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:54:53,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:54:53,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:54:53,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:54:53,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:54:53,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:54:53,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:54:53,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:54:53,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:54:53,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:54:53,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:54:53,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:54:53,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:54:53,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:54:53,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:54:53,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:54:53,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:54:53,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:54:53,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:54:53,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:54:53,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:54:53,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:54:53,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:54:53,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:54:53,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:54:53,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:54:53,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:54:53,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:54:53,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:54:53,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:54:53,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:54:53,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:54:53,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:54:53,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:54:53,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:54:53,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:54:53,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:54:53,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:54:53,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:54:53,252 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:54:53,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:54:53,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:54:53,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:54:53,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:54:53,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:54:53,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:54:53,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:54:53,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:54:53,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:54:53,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:54:53,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:54:53,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:54:53,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:54:53,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:54:53,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:54:53,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:54:53,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:54:53,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:54:53,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:54:53,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:54:53,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:54:53,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:54:53,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:54:53,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:54:53,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:54:53,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:54:53,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:54:53,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:54:53,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:54:53,672 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:54:53,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2.c [2020-10-29 03:54:53,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c619569c/4a6b2f0df9d64e1c956475a097c6f877/FLAGa19149f57 [2020-10-29 03:54:54,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:54:54,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2.c [2020-10-29 03:54:54,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c619569c/4a6b2f0df9d64e1c956475a097c6f877/FLAGa19149f57 [2020-10-29 03:54:54,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c619569c/4a6b2f0df9d64e1c956475a097c6f877 [2020-10-29 03:54:54,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:54:54,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:54:54,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:54,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:54:54,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:54:54,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:54" (1/1) ... [2020-10-29 03:54:54,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b034cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:54, skipping insertion in model container [2020-10-29 03:54:54,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:54:54" (1/1) ... [2020-10-29 03:54:54,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:54:54,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:54:54,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:54,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:54:55,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:54:55,062 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:54:55,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55 WrapperNode [2020-10-29 03:54:55,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:54:55,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:54:55,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:54:55,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:54:55,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... [2020-10-29 03:54:55,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... [2020-10-29 03:54:55,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... [2020-10-29 03:54:55,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... [2020-10-29 03:54:55,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... [2020-10-29 03:54:55,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... [2020-10-29 03:54:55,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... [2020-10-29 03:54:55,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:54:55,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:54:55,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:54:55,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:54:55,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:54:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:54:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:54:55,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:54:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:54:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:54:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:54:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:54:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:54:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:54:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:54:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:54:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:54:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:54:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:54:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:54:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:54:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:54:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:54:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:54:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:54:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:54:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:54:55,752 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:54:55,752 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 03:54:55,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:55 BoogieIcfgContainer [2020-10-29 03:54:55,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:54:55,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:54:55,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:54:55,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:54:55,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:54:54" (1/3) ... [2020-10-29 03:54:55,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f035ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:55, skipping insertion in model container [2020-10-29 03:54:55,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:54:55" (2/3) ... [2020-10-29 03:54:55,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f035ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:54:55, skipping insertion in model container [2020-10-29 03:54:55,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:54:55" (3/3) ... [2020-10-29 03:54:55,763 INFO L111 eAbstractionObserver]: Analyzing ICFG res2.c [2020-10-29 03:54:55,776 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:54:55,781 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:54:55,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:54:55,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:54:55,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:54:55,822 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:54:55,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:54:55,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:54:55,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:54:55,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:54:55,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:54:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-29 03:54:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:54:55,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:55,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:55,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1686177906, now seen corresponding path program 1 times [2020-10-29 03:54:55,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:55,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410071807] [2020-10-29 03:54:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:57,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:59,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:54:59,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:54:59,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3629 [2020-10-29 03:54:59,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:59,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:59,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:54:59,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:54:59,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:54:59,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:54:59,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:59,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:59,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:59,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:59,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:59,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:59,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:59,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:59,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:59,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:59,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410071807] [2020-10-29 03:54:59,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:54:59,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 03:55:00,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128385985] [2020-10-29 03:55:00,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:55:00,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:00,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:55:00,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:55:00,024 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 8 states. [2020-10-29 03:55:00,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:00,900 INFO L93 Difference]: Finished difference Result 103 states and 144 transitions. [2020-10-29 03:55:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:55:00,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-29 03:55:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:00,910 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:55:00,910 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:55:00,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:55:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:55:00,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-29 03:55:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:55:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-10-29 03:55:00,956 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 30 [2020-10-29 03:55:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:00,956 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-10-29 03:55:00,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:55:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-10-29 03:55:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:55:00,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:00,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:00,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:55:00,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:00,960 INFO L82 PathProgramCache]: Analyzing trace with hash 848406342, now seen corresponding path program 1 times [2020-10-29 03:55:00,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:00,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450134083] [2020-10-29 03:55:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:55:05,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:55:05,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:55:05,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:55:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:55:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:55:05,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:06,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:06,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:06,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:06,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:55:06,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:06,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:06,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:06,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:06,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:06,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:06,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:06,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:55:06,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450134083] [2020-10-29 03:55:06,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:55:06,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:55:06,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414497274] [2020-10-29 03:55:06,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:55:06,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:06,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:55:06,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:55:06,126 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 5 states. [2020-10-29 03:55:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:06,446 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2020-10-29 03:55:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:55:06,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-29 03:55:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:06,449 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:55:06,450 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 03:55:06,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:55:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 03:55:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-29 03:55:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:55:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-29 03:55:06,469 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 32 [2020-10-29 03:55:06,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:06,471 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-29 03:55:06,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:55:06,472 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-29 03:55:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:55:06,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:06,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:06,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:55:06,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:06,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1706440668, now seen corresponding path program 1 times [2020-10-29 03:55:06,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:06,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715149350] [2020-10-29 03:55:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:11,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:11,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:55:11,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:55:11,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:55:11,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:11,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:11,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:55:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:11,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:55:11,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:12,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:12,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:12,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:12,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:12,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:12,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:12,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:12,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:12,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:12,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:12,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:12,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:12,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:12,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:12,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:55:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:12,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715149350] [2020-10-29 03:55:12,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:12,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:55:12,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125690014] [2020-10-29 03:55:12,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:55:12,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:12,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:55:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:55:12,496 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 18 states. [2020-10-29 03:55:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:13,865 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-10-29 03:55:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:55:13,865 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-10-29 03:55:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:13,867 INFO L225 Difference]: With dead ends: 71 [2020-10-29 03:55:13,867 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:55:13,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:55:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:55:13,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-10-29 03:55:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:55:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2020-10-29 03:55:13,881 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 42 [2020-10-29 03:55:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:13,881 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2020-10-29 03:55:13,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:55:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2020-10-29 03:55:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:55:13,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:13,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:13,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:55:13,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash 406539258, now seen corresponding path program 2 times [2020-10-29 03:55:13,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:13,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421388189] [2020-10-29 03:55:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:18,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:55:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:55:18,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:55:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:55:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:55:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:19,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:19,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:55:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:19,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:19,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:19,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:55:19,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421388189] [2020-10-29 03:55:19,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:19,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:55:19,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923321962] [2020-10-29 03:55:19,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:55:19,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:19,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:55:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:55:19,026 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 8 states. [2020-10-29 03:55:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:19,374 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2020-10-29 03:55:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:55:19,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-29 03:55:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:19,376 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:55:19,376 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:55:19,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:55:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:55:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2020-10-29 03:55:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:55:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-29 03:55:19,389 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 44 [2020-10-29 03:55:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:19,389 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-29 03:55:19,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:55:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-29 03:55:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:55:19,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:19,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:19,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:55:19,391 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1203019048, now seen corresponding path program 3 times [2020-10-29 03:55:19,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:19,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539026128] [2020-10-29 03:55:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:24,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:24,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:55:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:55:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:55:24,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:24,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:55:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:55:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:55:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:24,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:24,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:24,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:24,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:24,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:24,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:24,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:24,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:24,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:24,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:24,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:24,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:55:24,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539026128] [2020-10-29 03:55:24,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:24,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:55:24,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679285540] [2020-10-29 03:55:24,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:55:24,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:24,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:55:24,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:55:24,527 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 8 states. [2020-10-29 03:55:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:24,861 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-10-29 03:55:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:55:24,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-29 03:55:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:24,863 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:55:24,864 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:55:24,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:55:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:55:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-29 03:55:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:55:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-29 03:55:24,874 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 46 [2020-10-29 03:55:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:24,875 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-29 03:55:24,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:55:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-29 03:55:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:55:24,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:24,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:24,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:55:24,877 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:24,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1102906416, now seen corresponding path program 4 times [2020-10-29 03:55:24,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:24,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77149765] [2020-10-29 03:55:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:24,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:29,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:55:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:55:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:55:29,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:29,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:55:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:55:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:31,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:31,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:31,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:31,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:31,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:31,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:31,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:31,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:31,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77149765] [2020-10-29 03:55:31,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:31,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:55:31,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066666104] [2020-10-29 03:55:31,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:55:31,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:55:31,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:55:31,915 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 32 states. [2020-10-29 03:55:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:34,619 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-10-29 03:55:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:55:34,620 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-29 03:55:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:34,622 INFO L225 Difference]: With dead ends: 91 [2020-10-29 03:55:34,622 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:55:34,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=338, Invalid=2314, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:55:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:55:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2020-10-29 03:55:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:55:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2020-10-29 03:55:34,637 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 54 [2020-10-29 03:55:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:34,638 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2020-10-29 03:55:34,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:55:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2020-10-29 03:55:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:55:34,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:34,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:34,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:55:34,640 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:34,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:34,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2136546578, now seen corresponding path program 5 times [2020-10-29 03:55:34,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:34,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821094756] [2020-10-29 03:55:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:34,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:39,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:39,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:55:39,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:55:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:55:39,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:39,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:55:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:55:39,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:55:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:39,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:39,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:39,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:39,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:39,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:39,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:39,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:55:39,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821094756] [2020-10-29 03:55:39,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:39,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:55:39,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114163416] [2020-10-29 03:55:39,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:55:39,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:39,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:55:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:55:39,798 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 10 states. [2020-10-29 03:55:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:40,249 INFO L93 Difference]: Finished difference Result 178 states and 202 transitions. [2020-10-29 03:55:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:55:40,250 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-29 03:55:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:40,251 INFO L225 Difference]: With dead ends: 178 [2020-10-29 03:55:40,252 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:55:40,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:55:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:55:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-29 03:55:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:55:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-29 03:55:40,280 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 56 [2020-10-29 03:55:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:40,281 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-29 03:55:40,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:55:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-29 03:55:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:55:40,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:40,289 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:40,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:55:40,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash 958430412, now seen corresponding path program 6 times [2020-10-29 03:55:40,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:40,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207577782] [2020-10-29 03:55:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:45,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:45,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:55:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:55:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:55:45,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:45,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:55:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:55:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:55:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:45,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:45,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:45,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:45,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:45,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:45,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:45,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:45,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:45,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:45,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:45,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:45,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:45,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:45,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:45,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:45,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 03:55:45,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207577782] [2020-10-29 03:55:45,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:45,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:55:45,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081353178] [2020-10-29 03:55:45,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:55:45,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:45,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:55:45,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:55:45,457 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 10 states. [2020-10-29 03:55:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:45,899 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-29 03:55:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:55:45,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-29 03:55:45,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:45,901 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:55:45,901 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:55:45,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:55:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:55:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 03:55:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:55:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-29 03:55:45,914 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 58 [2020-10-29 03:55:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:45,914 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-29 03:55:45,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:55:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-29 03:55:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:55:45,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:45,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:45,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:55:45,916 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1203093052, now seen corresponding path program 7 times [2020-10-29 03:55:45,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:45,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120285554] [2020-10-29 03:55:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:50,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:55:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:55:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:55:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:50,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:55:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:55:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:51,630 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-29 03:55:51,886 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-29 03:55:53,050 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2020-10-29 03:55:54,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:54,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:54,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:54,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:54,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:54,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:54,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:54,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:55:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:54,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:55:55,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120285554] [2020-10-29 03:55:55,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:55,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:55:55,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658059811] [2020-10-29 03:55:55,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:55:55,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:55,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:55:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:55:55,027 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 42 states. [2020-10-29 03:55:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:58,878 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2020-10-29 03:55:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:55:58,878 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 66 [2020-10-29 03:55:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:58,880 INFO L225 Difference]: With dead ends: 111 [2020-10-29 03:55:58,880 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:55:58,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=325, Invalid=3835, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:55:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:55:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-10-29 03:55:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:55:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2020-10-29 03:55:58,896 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 66 [2020-10-29 03:55:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:58,896 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2020-10-29 03:55:58,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:55:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2020-10-29 03:55:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:55:58,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:58,898 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:58,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:55:58,898 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:58,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:58,899 INFO L82 PathProgramCache]: Analyzing trace with hash 368344034, now seen corresponding path program 8 times [2020-10-29 03:55:58,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:58,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907202182] [2020-10-29 03:55:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:59,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:59,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:59,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:56:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:56:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:56:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:03,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:56:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:56:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:56:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:04,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:04,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:56:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:04,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:04,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:04,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:04,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:04,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:04,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:04,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:04,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:56:04,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907202182] [2020-10-29 03:56:04,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:04,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:56:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399037121] [2020-10-29 03:56:04,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:56:04,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:56:04,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:56:04,101 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 12 states. [2020-10-29 03:56:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:04,779 INFO L93 Difference]: Finished difference Result 218 states and 242 transitions. [2020-10-29 03:56:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:56:04,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-29 03:56:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:04,781 INFO L225 Difference]: With dead ends: 218 [2020-10-29 03:56:04,782 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:56:04,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:56:04,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:56:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2020-10-29 03:56:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:56:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-10-29 03:56:04,809 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 68 [2020-10-29 03:56:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:04,809 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-10-29 03:56:04,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:56:04,809 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-10-29 03:56:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:56:04,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:04,811 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:04,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:56:04,811 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash 540219584, now seen corresponding path program 9 times [2020-10-29 03:56:04,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:04,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088108560] [2020-10-29 03:56:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:09,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:56:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:09,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:09,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:09,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:09,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:09,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:56:09,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:09,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:09,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:09,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:09,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:09,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:09,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-29 03:56:10,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088108560] [2020-10-29 03:56:10,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:10,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:56:10,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787433933] [2020-10-29 03:56:10,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:56:10,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:10,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:56:10,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:56:10,009 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 12 states. [2020-10-29 03:56:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:10,792 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-10-29 03:56:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:56:10,793 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-29 03:56:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:10,794 INFO L225 Difference]: With dead ends: 110 [2020-10-29 03:56:10,794 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:56:10,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:56:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:56:10,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-29 03:56:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:56:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-29 03:56:10,805 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 70 [2020-10-29 03:56:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:10,805 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-29 03:56:10,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:56:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-29 03:56:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:56:10,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:10,806 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:10,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:56:10,807 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:10,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:10,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2000488888, now seen corresponding path program 10 times [2020-10-29 03:56:10,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:10,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232007030] [2020-10-29 03:56:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:16,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:16,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:56:16,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:56:16,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5819 [2020-10-29 03:56:16,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:16,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:16,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 03:56:16,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:56:16,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:17,778 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-10-29 03:56:18,036 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-29 03:56:19,393 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-29 03:56:19,576 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-29 03:56:19,945 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-29 03:56:20,115 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-29 03:56:20,281 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-29 03:56:23,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:23,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:23,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:56:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:23,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:56:23,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232007030] [2020-10-29 03:56:23,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:23,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:56:23,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982559411] [2020-10-29 03:56:23,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:56:23,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:56:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=2763, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:56:23,857 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 56 states. [2020-10-29 03:56:24,401 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2020-10-29 03:56:24,819 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-29 03:56:25,266 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-29 03:56:25,683 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-29 03:56:26,430 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 92 [2020-10-29 03:56:27,132 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-29 03:56:27,614 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-29 03:56:28,055 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-29 03:56:28,588 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-10-29 03:56:29,405 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-29 03:56:29,663 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-29 03:56:30,241 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2020-10-29 03:56:30,495 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-29 03:56:30,745 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-29 03:56:31,433 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-29 03:56:32,005 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-29 03:56:32,395 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-29 03:56:32,723 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-29 03:56:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:34,054 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2020-10-29 03:56:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 03:56:34,055 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 78 [2020-10-29 03:56:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:34,057 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:56:34,057 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 03:56:34,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=834, Invalid=8096, Unknown=0, NotChecked=0, Total=8930 [2020-10-29 03:56:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 03:56:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 114. [2020-10-29 03:56:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-29 03:56:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-10-29 03:56:34,074 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 78 [2020-10-29 03:56:34,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:34,074 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-10-29 03:56:34,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:56:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-10-29 03:56:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:56:34,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:34,075 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:34,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:56:34,076 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:34,076 INFO L82 PathProgramCache]: Analyzing trace with hash -480962858, now seen corresponding path program 11 times [2020-10-29 03:56:34,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:34,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668983942] [2020-10-29 03:56:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:39,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:56:39,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:56:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:56:39,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:39,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:56:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:56:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:56:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:39,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:39,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:39,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:39,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:56:39,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:39,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:39,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:39,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:39,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:39,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-29 03:56:39,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668983942] [2020-10-29 03:56:39,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:39,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:56:39,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054180558] [2020-10-29 03:56:39,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:56:39,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:39,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:56:39,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:56:39,315 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 14 states. [2020-10-29 03:56:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:40,180 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2020-10-29 03:56:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:56:40,181 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-29 03:56:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:40,182 INFO L225 Difference]: With dead ends: 258 [2020-10-29 03:56:40,182 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:56:40,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:56:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:56:40,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 119. [2020-10-29 03:56:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:56:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-10-29 03:56:40,198 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 80 [2020-10-29 03:56:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:40,198 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-10-29 03:56:40,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:56:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-10-29 03:56:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:56:40,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:40,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:40,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:56:40,200 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:40,200 INFO L82 PathProgramCache]: Analyzing trace with hash -613140812, now seen corresponding path program 12 times [2020-10-29 03:56:40,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:40,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313187253] [2020-10-29 03:56:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:45,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:56:45,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:56:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:45,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:45,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:56:45,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 03:56:45,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:45,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:45,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:45,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:45,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:56:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:45,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:45,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:56:45,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:56:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:56:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:45,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:56:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:56:45,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:56:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:56:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 03:56:45,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313187253] [2020-10-29 03:56:45,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:56:45,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:56:45,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396683149] [2020-10-29 03:56:45,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:56:45,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:56:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:56:45,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:56:45,484 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 14 states. [2020-10-29 03:56:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:56:46,201 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2020-10-29 03:56:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:56:46,202 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-29 03:56:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:56:46,203 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:56:46,203 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:56:46,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:56:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:56:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-29 03:56:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:56:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2020-10-29 03:56:46,215 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 82 [2020-10-29 03:56:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:56:46,216 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2020-10-29 03:56:46,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:56:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2020-10-29 03:56:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:56:46,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:56:46,217 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:56:46,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:56:46,217 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:56:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:56:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1510757292, now seen corresponding path program 13 times [2020-10-29 03:56:46,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:56:46,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208811446] [2020-10-29 03:56:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:56:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:56:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:56:51,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:56:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:56:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:56:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:56:51,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:56:51,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:56:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-29 03:56:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:56:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:56:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:56:52,058 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-29 03:56:52,187 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-29 03:56:52,330 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-29 03:56:52,474 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-29 03:56:52,605 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-29 03:56:52,936 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-29 03:56:53,097 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-29 03:56:53,308 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-29 03:56:53,472 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-29 03:56:53,669 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-10-29 03:56:53,836 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2020-10-29 03:56:54,043 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2020-10-29 03:56:54,206 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-10-29 03:56:54,422 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-10-29 03:56:55,404 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-10-29 03:56:55,633 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-10-29 03:56:55,873 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-29 03:56:56,103 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-29 03:56:56,366 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2020-10-29 03:56:56,626 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2020-10-29 03:56:56,919 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-29 03:56:57,164 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-29 03:56:57,434 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-10-29 03:56:57,656 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-29 03:56:57,893 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-29 03:56:58,178 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2020-10-29 03:56:58,422 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-29 03:56:58,730 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-10-29 03:56:58,935 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-29 03:56:59,181 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-10-29 03:57:00,179 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-29 03:57:03,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:57:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:03,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:03,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208811446] [2020-10-29 03:57:03,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:03,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-29 03:57:03,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494036440] [2020-10-29 03:57:03,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-29 03:57:03,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:03,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-29 03:57:03,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=4303, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 03:57:03,619 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 69 states. [2020-10-29 03:57:05,447 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-29 03:57:05,940 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-10-29 03:57:06,209 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-29 03:57:06,699 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 107 [2020-10-29 03:57:07,057 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-29 03:57:07,924 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-10-29 03:57:08,279 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 54 [2020-10-29 03:57:08,585 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2020-10-29 03:57:08,915 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-10-29 03:57:09,157 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 50 [2020-10-29 03:57:09,495 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2020-10-29 03:57:09,719 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-29 03:57:10,029 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 43 [2020-10-29 03:57:10,537 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 46 [2020-10-29 03:57:10,968 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 38 [2020-10-29 03:57:11,424 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 38 [2020-10-29 03:57:11,986 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2020-10-29 03:57:12,493 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-10-29 03:57:13,054 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-10-29 03:57:14,416 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-29 03:57:15,050 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-29 03:57:15,316 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-29 03:57:15,812 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-29 03:57:16,281 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-10-29 03:57:16,519 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-29 03:57:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:19,751 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2020-10-29 03:57:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-10-29 03:57:19,752 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 90 [2020-10-29 03:57:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:19,754 INFO L225 Difference]: With dead ends: 167 [2020-10-29 03:57:19,754 INFO L226 Difference]: Without dead ends: 160 [2020-10-29 03:57:19,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4426 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=1330, Invalid=14672, Unknown=0, NotChecked=0, Total=16002 [2020-10-29 03:57:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-29 03:57:19,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 132. [2020-10-29 03:57:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-29 03:57:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions. [2020-10-29 03:57:19,781 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 90 [2020-10-29 03:57:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:19,782 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions. [2020-10-29 03:57:19,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-29 03:57:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2020-10-29 03:57:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 03:57:19,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:19,783 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:19,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:57:19,783 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1333375946, now seen corresponding path program 14 times [2020-10-29 03:57:19,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:19,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086995378] [2020-10-29 03:57:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:24,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:24,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:57:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:25,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:25,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:25,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:57:25,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:25,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:25,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:25,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:25,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:57:25,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:57:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 03:57:25,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086995378] [2020-10-29 03:57:25,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:25,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:57:25,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20886886] [2020-10-29 03:57:25,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:57:25,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:25,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:57:25,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:57:25,058 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand 16 states. [2020-10-29 03:57:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:25,948 INFO L93 Difference]: Finished difference Result 298 states and 322 transitions. [2020-10-29 03:57:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:57:25,949 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-10-29 03:57:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:25,950 INFO L225 Difference]: With dead ends: 298 [2020-10-29 03:57:25,951 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:57:25,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:57:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:57:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 137. [2020-10-29 03:57:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:57:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2020-10-29 03:57:25,967 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 92 [2020-10-29 03:57:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:25,967 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2020-10-29 03:57:25,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:57:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2020-10-29 03:57:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:57:25,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:25,969 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:25,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:57:25,969 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1806379352, now seen corresponding path program 15 times [2020-10-29 03:57:25,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:25,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228584478] [2020-10-29 03:57:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:26,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:31,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:31,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 03:57:31,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:57:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:57:31,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:31,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:57:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:57:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:31,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:31,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:31,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:57:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:31,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:31,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 03:57:31,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228584478] [2020-10-29 03:57:31,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:31,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:57:31,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937492285] [2020-10-29 03:57:31,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:57:31,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:31,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:57:31,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:57:31,248 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 16 states. [2020-10-29 03:57:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:32,390 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2020-10-29 03:57:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:57:32,391 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2020-10-29 03:57:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:32,392 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:57:32,392 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 03:57:32,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:57:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 03:57:32,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-29 03:57:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:57:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-10-29 03:57:32,406 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 94 [2020-10-29 03:57:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:32,406 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-10-29 03:57:32,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:57:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-10-29 03:57:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 03:57:32,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:32,407 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:32,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:57:32,407 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:32,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:32,408 INFO L82 PathProgramCache]: Analyzing trace with hash -81191008, now seen corresponding path program 16 times [2020-10-29 03:57:32,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:32,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183732901] [2020-10-29 03:57:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:32,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:57:39,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:57:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7180 [2020-10-29 03:57:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:39,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 79 [2020-10-29 03:57:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:57:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:40,850 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-29 03:57:41,174 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-29 03:57:41,346 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-29 03:57:41,518 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-29 03:57:41,689 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-29 03:57:41,863 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-29 03:57:42,030 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-10-29 03:57:42,269 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-29 03:57:42,535 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-29 03:57:42,799 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2020-10-29 03:57:43,025 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-29 03:57:43,280 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-10-29 03:57:43,508 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-29 03:57:43,711 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-29 03:57:43,897 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-29 03:57:44,108 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-29 03:57:44,311 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-29 03:57:44,509 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-29 03:57:45,040 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2020-10-29 03:57:45,247 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2020-10-29 03:57:45,455 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 34 [2020-10-29 03:57:45,708 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-10-29 03:57:45,996 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2020-10-29 03:57:46,276 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2020-10-29 03:57:46,577 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2020-10-29 03:57:46,873 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2020-10-29 03:57:47,316 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2020-10-29 03:57:47,675 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 55 [2020-10-29 03:57:47,991 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-10-29 03:57:48,312 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 50 [2020-10-29 03:57:48,722 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2020-10-29 03:57:49,067 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 57 [2020-10-29 03:57:49,494 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 63 [2020-10-29 03:57:49,827 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 54 [2020-10-29 03:57:50,187 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 53 [2020-10-29 03:57:50,586 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 52 [2020-10-29 03:57:50,945 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2020-10-29 03:57:51,280 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-10-29 03:57:51,664 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2020-10-29 03:57:51,992 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 45 [2020-10-29 03:57:52,353 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-10-29 03:57:52,825 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-29 03:57:53,069 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-10-29 03:57:53,374 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2020-10-29 03:57:53,674 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2020-10-29 03:57:53,986 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-29 03:57:54,279 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-29 03:57:54,602 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2020-10-29 03:57:54,920 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-29 03:57:55,286 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-29 03:57:55,633 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-29 03:57:55,981 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-10-29 03:57:56,284 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-29 03:57:56,647 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-10-29 03:57:56,956 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-29 03:57:57,284 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-10-29 03:57:57,570 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-29 03:57:57,879 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-29 03:57:58,424 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-10-29 03:58:00,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:00,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:00,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:00,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:58:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:00,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:00,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 20 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:58:00,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183732901] [2020-10-29 03:58:00,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:00,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-10-29 03:58:00,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784311779] [2020-10-29 03:58:00,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-10-29 03:58:00,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:00,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-10-29 03:58:00,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=6052, Unknown=0, NotChecked=0, Total=6480 [2020-10-29 03:58:00,190 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 81 states. [2020-10-29 03:58:00,506 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 5 [2020-10-29 03:58:01,011 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 36 [2020-10-29 03:58:03,942 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 133 [2020-10-29 03:58:04,403 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-29 03:58:04,967 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-29 03:58:05,654 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-29 03:58:06,197 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-29 03:58:06,759 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2020-10-29 03:58:07,298 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-29 03:58:07,802 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-29 03:58:08,312 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-29 03:58:08,802 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-29 03:58:09,279 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-29 03:58:09,710 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-29 03:58:10,332 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-10-29 03:58:10,767 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-29 03:58:11,605 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 106 [2020-10-29 03:58:11,989 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-29 03:58:12,353 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-29 03:58:12,747 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-29 03:58:13,219 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-29 03:58:13,942 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2020-10-29 03:58:14,556 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2020-10-29 03:58:15,200 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2020-10-29 03:58:15,837 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2020-10-29 03:58:16,397 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-29 03:58:16,928 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2020-10-29 03:58:17,450 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2020-10-29 03:58:17,970 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2020-10-29 03:58:18,418 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2020-10-29 03:58:18,915 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2020-10-29 03:58:19,336 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2020-10-29 03:58:19,838 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2020-10-29 03:58:20,268 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-29 03:58:20,734 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2020-10-29 03:58:21,310 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-10-29 03:58:21,627 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-29 03:58:21,894 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-29 03:58:22,236 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 03:58:22,547 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-29 03:58:22,930 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-29 03:58:23,317 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-29 03:58:23,717 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-29 03:58:24,152 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-29 03:58:24,522 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-29 03:58:24,897 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-29 03:58:25,364 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-29 03:58:25,808 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-29 03:58:26,216 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-29 03:58:26,705 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2020-10-29 03:58:27,176 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-29 03:58:27,527 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-29 03:58:28,054 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2020-10-29 03:58:28,534 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-29 03:58:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:30,116 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2020-10-29 03:58:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-29 03:58:30,118 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 102 [2020-10-29 03:58:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:30,119 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:58:30,120 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 03:58:30,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7286 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=1387, Invalid=21869, Unknown=0, NotChecked=0, Total=23256 [2020-10-29 03:58:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 03:58:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2020-10-29 03:58:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 03:58:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 144 transitions. [2020-10-29 03:58:30,145 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 144 transitions. Word has length 102 [2020-10-29 03:58:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:30,146 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 144 transitions. [2020-10-29 03:58:30,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-10-29 03:58:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 144 transitions. [2020-10-29 03:58:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:58:30,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:30,147 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:30,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:58:30,147 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:30,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1183253310, now seen corresponding path program 17 times [2020-10-29 03:58:30,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:30,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317831276] [2020-10-29 03:58:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:30,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:35,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:35,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:58:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:35,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:35,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:35,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:35,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:35,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:35,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:58:35,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:35,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 03:58:35,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317831276] [2020-10-29 03:58:35,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:35,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:58:35,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317273443] [2020-10-29 03:58:35,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:58:35,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:35,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:58:35,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:58:35,474 INFO L87 Difference]: Start difference. First operand 136 states and 144 transitions. Second operand 18 states. [2020-10-29 03:58:36,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:36,742 INFO L93 Difference]: Finished difference Result 296 states and 317 transitions. [2020-10-29 03:58:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:58:36,743 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 104 [2020-10-29 03:58:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:36,745 INFO L225 Difference]: With dead ends: 296 [2020-10-29 03:58:36,745 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 03:58:36,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:58:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 03:58:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 169. [2020-10-29 03:58:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-29 03:58:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 178 transitions. [2020-10-29 03:58:36,763 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 178 transitions. Word has length 104 [2020-10-29 03:58:36,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:36,763 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 178 transitions. [2020-10-29 03:58:36,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:58:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 178 transitions. [2020-10-29 03:58:36,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 03:58:36,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:36,765 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:36,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:58:36,765 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1937884158, now seen corresponding path program 18 times [2020-10-29 03:58:36,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:36,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664726572] [2020-10-29 03:58:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking...