/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/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:06:39,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:06:39,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:06:39,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:06:39,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:06:39,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:06:39,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:06:39,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:06:39,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:06:39,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:06:39,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:06:39,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:06:39,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:06:39,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:06:39,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:06:39,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:06:39,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:06:39,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:06:39,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:06:39,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:06:39,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:06:39,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:06:39,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:06:39,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:06:39,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:06:39,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:06:39,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:06:39,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:06:39,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:06:39,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:06:39,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:06:39,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:06:39,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:06:39,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:06:39,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:06:39,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:06:39,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:06:39,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:06:39,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:06:39,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:06:39,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:06:39,194 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 12:06:39,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:06:39,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:06:39,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:06:39,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:06:39,252 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:06:39,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:06:39,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:06:39,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:06:39,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:06:39,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:06:39,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:06:39,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:06:39,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:06:39,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:06:39,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:06:39,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:06:39,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:06:39,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:06:39,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:06:39,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:06:39,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:06:39,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:06:39,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:06:39,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:06:39,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:06:39,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:06:39,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:06:39,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:06:39,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:06:39,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:06:39,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:06:39,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:06:39,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:06:39,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:06:39,715 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:06:39,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-29 12:06:39,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64056ad7c/0359c920509c40e188f3daae6830c95b/FLAG40f76fd7a [2020-10-29 12:06:40,540 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:06:40,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-29 12:06:40,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64056ad7c/0359c920509c40e188f3daae6830c95b/FLAG40f76fd7a [2020-10-29 12:06:40,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64056ad7c/0359c920509c40e188f3daae6830c95b [2020-10-29 12:06:40,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:06:40,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:06:40,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:06:40,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:06:40,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:06:40,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:06:40" (1/1) ... [2020-10-29 12:06:40,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651cec7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:40, skipping insertion in model container [2020-10-29 12:06:40,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:06:40" (1/1) ... [2020-10-29 12:06:40,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:06:40,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:06:41,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:06:41,116 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:06:41,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:06:41,155 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:06:41,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41 WrapperNode [2020-10-29 12:06:41,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:06:41,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:06:41,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:06:41,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:06:41,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (1/1) ... [2020-10-29 12:06:41,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (1/1) ... [2020-10-29 12:06:41,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (1/1) ... [2020-10-29 12:06:41,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (1/1) ... [2020-10-29 12:06:41,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (1/1) ... [2020-10-29 12:06:41,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (1/1) ... [2020-10-29 12:06:41,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (1/1) ... [2020-10-29 12:06:41,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:06:41,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:06:41,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:06:41,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:06:41,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (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 12:06:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:06:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:06:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:06:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-29 12:06:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-29 12:06:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:06:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:06:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:06:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:06:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:06:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:06:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-29 12:06:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-29 12:06:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:06:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:06:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:06:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:06:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:06:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:06:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:06:41,695 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:06:41,695 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:06:41,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:06:41 BoogieIcfgContainer [2020-10-29 12:06:41,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:06:41,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:06:41,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:06:41,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:06:41,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:06:40" (1/3) ... [2020-10-29 12:06:41,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66581661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:06:41, skipping insertion in model container [2020-10-29 12:06:41,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:06:41" (2/3) ... [2020-10-29 12:06:41,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66581661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:06:41, skipping insertion in model container [2020-10-29 12:06:41,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:06:41" (3/3) ... [2020-10-29 12:06:41,728 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-10-29 12:06:41,743 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:06:41,749 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:06:41,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:06:41,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:06:41,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:06:41,794 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:06:41,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:06:41,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:06:41,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:06:41,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:06:41,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:06:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-29 12:06:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 12:06:41,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:06:41,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:06:41,821 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:06:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:06:41,828 INFO L82 PathProgramCache]: Analyzing trace with hash 219823047, now seen corresponding path program 1 times [2020-10-29 12:06:41,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:06:41,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871434175] [2020-10-29 12:06:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:06:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:42,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:42,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:06:42,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-29 12:06:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:42,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:06:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:06:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:06:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:06:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:06:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:42,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:06:42,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:06:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:42,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:06:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:42,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:06:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:06:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:42,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:06:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:06:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:42,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:06:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:06:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:06:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:42,858 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 12:06:42,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871434175] [2020-10-29 12:06:42,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:06:42,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:06:42,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43107279] [2020-10-29 12:06:42,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:06:42,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:06:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:06:42,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:06:42,886 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-10-29 12:06:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:06:43,212 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-29 12:06:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:06:43,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 12:06:43,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:06:43,224 INFO L225 Difference]: With dead ends: 50 [2020-10-29 12:06:43,225 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:06:43,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:06:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:06:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-29 12:06:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 12:06:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-29 12:06:43,284 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15 [2020-10-29 12:06:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:06:43,285 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-29 12:06:43,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:06:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-29 12:06:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 12:06:43,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:06:43,288 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 12:06:43,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:06:43,289 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:06:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:06:43,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2083135015, now seen corresponding path program 1 times [2020-10-29 12:06:43,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:06:43,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557167297] [2020-10-29 12:06:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:06:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:43,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:43,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:45,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:45,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 12:06:45,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:06:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2367 [2020-10-29 12:06:45,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:45,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:06:45,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:06:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:06:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:06:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:45,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:45,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:06:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:06:45,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:45,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:06:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:06:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:06:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:45,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:45,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:45,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:06:45,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:06:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 12:06:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:45,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:06:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:06:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:06:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:06:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:45,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:06:45,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:06:45,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:45,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:06:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:06:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:06:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:46,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:46,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:06:46,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:06:46,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:46,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:06:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:06:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:06:46,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557167297] [2020-10-29 12:06:46,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:06:46,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:06:46,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474747080] [2020-10-29 12:06:46,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:06:46,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:06:46,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:06:46,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:06:46,041 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 8 states. [2020-10-29 12:06:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:06:46,427 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-10-29 12:06:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:06:46,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-29 12:06:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:06:46,430 INFO L225 Difference]: With dead ends: 44 [2020-10-29 12:06:46,431 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 12:06:46,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:06:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 12:06:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-29 12:06:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 12:06:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2020-10-29 12:06:46,447 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 28 [2020-10-29 12:06:46,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:06:46,447 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2020-10-29 12:06:46,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:06:46,448 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2020-10-29 12:06:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 12:06:46,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:06:46,450 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] [2020-10-29 12:06:46,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:06:46,450 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:06:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:06:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash 752879968, now seen corresponding path program 1 times [2020-10-29 12:06:46,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:06:46,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556758870] [2020-10-29 12:06:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:06:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:46,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:47,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:47,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:06:47,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:06:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-10-29 12:06:47,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:47,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:06:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:06:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:06:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:06:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:06:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:47,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:47,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:06:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:06:47,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:06:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:06:47,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:06:47,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:06:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:47,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:47,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 12:06:47,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:06:47,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 12:06:47,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:47,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:06:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:06:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:06:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:06:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:06:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:06:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:06:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:06:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:06:47,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 12:06:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:47,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:47,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:06:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:06:47,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:47,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:06:47,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:06:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:47,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 12:06:47,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556758870] [2020-10-29 12:06:47,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:06:47,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:06:47,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015420864] [2020-10-29 12:06:47,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:06:47,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:06:47,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:06:47,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:06:47,953 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 8 states. [2020-10-29 12:06:48,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:06:48,386 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2020-10-29 12:06:48,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:06:48,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-29 12:06:48,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:06:48,389 INFO L225 Difference]: With dead ends: 51 [2020-10-29 12:06:48,389 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 12:06:48,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:06:48,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 12:06:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2020-10-29 12:06:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 12:06:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2020-10-29 12:06:48,404 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 29 [2020-10-29 12:06:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:06:48,404 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2020-10-29 12:06:48,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:06:48,404 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2020-10-29 12:06:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 12:06:48,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:06:48,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 12:06:48,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:06:48,407 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:06:48,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:06:48,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2070859795, now seen corresponding path program 1 times [2020-10-29 12:06:48,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:06:48,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692036403] [2020-10-29 12:06:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:06:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:53,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 12:06:53,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:06:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:06:53,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:53,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:53,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:06:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:06:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:06:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:53,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:06:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:53,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:06:53,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:06:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:53,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:06:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:06:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:53,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:06:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:54,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:54,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:06:54,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:06:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1342 [2020-10-29 12:06:54,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:54,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:54,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:06:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:06:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:06:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:06:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:06:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:54,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:54,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:06:54,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:06:54,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:06:54,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:54,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:06:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:06:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:54,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:06:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:54,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:54,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:54,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:06:54,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:06:54,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:54,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:06:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:06:54,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:54,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:06:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:54,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:54,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:54,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:06:54,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:06:54,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:54,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:06:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:06:54,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:06:54,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:06:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:54,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:06:54,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:06:54,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:06:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:06:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:06:54,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:06:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:06:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:06:54,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:06:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:06:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 12:06:54,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692036403] [2020-10-29 12:06:54,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:06:54,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:06:54,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486372754] [2020-10-29 12:06:54,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:06:54,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:06:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:06:54,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:06:54,976 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 8 states. [2020-10-29 12:06:55,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:06:55,550 INFO L93 Difference]: Finished difference Result 61 states and 86 transitions. [2020-10-29 12:06:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:06:55,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-29 12:06:55,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:06:55,557 INFO L225 Difference]: With dead ends: 61 [2020-10-29 12:06:55,557 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 12:06:55,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:06:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 12:06:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-10-29 12:06:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 12:06:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-10-29 12:06:55,593 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 41 [2020-10-29 12:06:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:06:55,594 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-10-29 12:06:55,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:06:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-10-29 12:06:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 12:06:55,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:06:55,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 12:06:55,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:06:55,605 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:06:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:06:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash -388953478, now seen corresponding path program 1 times [2020-10-29 12:06:55,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:06:55,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072130951] [2020-10-29 12:06:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:06:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:06:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:56,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:56,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:06:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:00,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:00,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:07:00,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:07:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:07:00,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:00,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:00,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:07:00,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:07:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:07:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:07:00,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:07:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:00,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:00,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:07:00,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:00,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:07:00,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:00,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:07:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:00,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:01,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:07:01,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:07:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-29 12:07:01,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:01,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:07:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:07:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:07:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:07:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:02,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:07:02,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 12:07:02,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:02,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:07:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:07:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:02,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:02,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:02,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:02,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:07:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:07:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:02,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:02,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:02,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:02,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:02,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:02,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:07:02,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:07:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:02,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:07:02,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:07:02,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:02,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:07:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:07:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 12:07:02,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072130951] [2020-10-29 12:07:02,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:07:02,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:07:02,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317710417] [2020-10-29 12:07:02,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:07:02,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:07:02,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:07:02,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:07:02,074 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 8 states. [2020-10-29 12:07:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:07:02,449 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2020-10-29 12:07:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:07:02,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-29 12:07:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:07:02,455 INFO L225 Difference]: With dead ends: 58 [2020-10-29 12:07:02,455 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 12:07:02,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:07:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 12:07:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-29 12:07:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 12:07:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-10-29 12:07:02,477 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 42 [2020-10-29 12:07:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:07:02,478 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-10-29 12:07:02,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:07:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-10-29 12:07:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 12:07:02,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:07:02,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-10-29 12:07:02,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:07:02,482 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:07:02,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:07:02,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1887052013, now seen corresponding path program 1 times [2020-10-29 12:07:02,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:07:02,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874468462] [2020-10-29 12:07:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:07:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 12:07:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:07:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:07:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:07,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:07:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:07:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 12:07:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:07:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:07,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:07:07,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:07:07,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:07,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:07:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:09,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:12,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:07:12,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:07:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 12:07:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:12,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:07:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:07:12,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 12:07:12,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:12,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:07:12,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:07:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 12:07:12,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:12,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:07:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:07:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:12,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:12,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:07:12,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:12,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:07:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:12,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:07:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:12,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:12,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:07:12,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:12,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:12,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:12,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:12,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:07:12,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:07:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:12,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:07:12,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:07:12,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:12,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:07:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:12,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:12,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:12,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:12,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:12,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:07:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:12,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:12,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:12,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:12,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 12:07:12,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874468462] [2020-10-29 12:07:12,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:07:12,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:07:12,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383112077] [2020-10-29 12:07:12,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:07:12,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:07:12,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:07:12,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:07:12,780 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 10 states. [2020-10-29 12:07:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:07:13,360 INFO L93 Difference]: Finished difference Result 111 states and 176 transitions. [2020-10-29 12:07:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:07:13,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-29 12:07:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:07:13,363 INFO L225 Difference]: With dead ends: 111 [2020-10-29 12:07:13,363 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 12:07:13,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:07:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 12:07:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2020-10-29 12:07:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 12:07:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2020-10-29 12:07:13,390 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 54 [2020-10-29 12:07:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:07:13,393 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-10-29 12:07:13,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:07:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2020-10-29 12:07:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 12:07:13,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:07:13,395 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-10-29 12:07:13,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:07:13,395 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:07:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:07:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash 501472485, now seen corresponding path program 1 times [2020-10-29 12:07:13,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:07:13,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887272084] [2020-10-29 12:07:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:07:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:07:18,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:07:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:07:18,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:18,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:07:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:07:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:07:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:18,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:07:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:18,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:07:18,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:07:18,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:18,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:18,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:18,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:07:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:18,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:20,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:23,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 12:07:23,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:07:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4841 [2020-10-29 12:07:23,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:23,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:07:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:07:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 12:07:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:23,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 12:07:23,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 12:07:23,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:23,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:07:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:07:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:23,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:07:23,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:07:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:23,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:07:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 12:07:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:07:23,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:23,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:07:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:07:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:23,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 12:07:23,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:07:23,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:23,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:07:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:23,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:07:23,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:07:23,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:23,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:23,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:23,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:23,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 12:07:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:23,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:23,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:07:23,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:23,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:23,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 12:07:23,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887272084] [2020-10-29 12:07:23,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:07:23,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:07:23,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145375913] [2020-10-29 12:07:23,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:07:23,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:07:23,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:07:23,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:07:23,579 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand 10 states. [2020-10-29 12:07:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:07:24,451 INFO L93 Difference]: Finished difference Result 109 states and 164 transitions. [2020-10-29 12:07:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:07:24,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-29 12:07:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:07:24,456 INFO L225 Difference]: With dead ends: 109 [2020-10-29 12:07:24,456 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 12:07:24,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:07:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 12:07:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2020-10-29 12:07:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 12:07:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 135 transitions. [2020-10-29 12:07:24,478 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 135 transitions. Word has length 56 [2020-10-29 12:07:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:07:24,479 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 135 transitions. [2020-10-29 12:07:24,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:07:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2020-10-29 12:07:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 12:07:24,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:07:24,481 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:07:24,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:07:24,481 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:07:24,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:07:24,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1577514399, now seen corresponding path program 2 times [2020-10-29 12:07:24,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:07:24,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600999037] [2020-10-29 12:07:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:07:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:24,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:07:29,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-29 12:07:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:07:29,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:29,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:07:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:07:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 12:07:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:07:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:29,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:07:29,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:29,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:07:29,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:29,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:29,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:29,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:29,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:29,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:29,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:07:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:31,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:07:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:07:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:07:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:07:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 12:07:34,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:34,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:07:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:07:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:07:34,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:34,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:34,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:34,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:34,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:34,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:07:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:34,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:34,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:34,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:34,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:34,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:34,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:07:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:34,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:34,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:34,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:34,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:07:34,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:34,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:34,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:07:34,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:34,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:07:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:07:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:35,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:35,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:07:35,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:35,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:07:35,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:35,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:35,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:07:35,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:35,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:35,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:35,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:07:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:35,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:35,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:35,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:35,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:35,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:35,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:07:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:35,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:35,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:35,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:35,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:07:35,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:35,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:07:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-29 12:07:35,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600999037] [2020-10-29 12:07:35,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:07:35,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:07:35,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945993423] [2020-10-29 12:07:35,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:07:35,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:07:35,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:07:35,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:07:35,676 INFO L87 Difference]: Start difference. First operand 88 states and 135 transitions. Second operand 12 states. [2020-10-29 12:07:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:07:36,942 INFO L93 Difference]: Finished difference Result 221 states and 440 transitions. [2020-10-29 12:07:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:07:36,943 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-29 12:07:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:07:36,946 INFO L225 Difference]: With dead ends: 221 [2020-10-29 12:07:36,946 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 12:07:36,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:07:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 12:07:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2020-10-29 12:07:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 12:07:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2020-10-29 12:07:36,984 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 80 [2020-10-29 12:07:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:07:36,984 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2020-10-29 12:07:36,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:07:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2020-10-29 12:07:36,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:07:36,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:07:36,986 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:07:36,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:07:36,987 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:07:36,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:07:36,987 INFO L82 PathProgramCache]: Analyzing trace with hash 909356298, now seen corresponding path program 1 times [2020-10-29 12:07:36,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:07:36,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473072964] [2020-10-29 12:07:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:07:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:37,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:39,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:39,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:39,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:40,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:42,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:07:42,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-29 12:07:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:07:42,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:42,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:07:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:07:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:07:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:42,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:07:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:42,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:42,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:07:42,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:07:42,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:42,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:42,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:07:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:42,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:45,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 12:07:47,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 12:07:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:07:47,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:07:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:07:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:07:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 12:07:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:07:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:07:47,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:07:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:47,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:47,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:07:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:47,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:47,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:07:47,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:07:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:07:47,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:47,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:07:47,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:07:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 12:07:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:07:47,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:07:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 12:07:47,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:07:47,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:07:47,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 12:07:47,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:07:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 12:07:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:47,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:47,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:07:47,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:47,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:07:47,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:47,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:07:47,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 12:07:47,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473072964] [2020-10-29 12:07:47,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:07:47,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:07:47,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782856006] [2020-10-29 12:07:47,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:07:47,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:07:47,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:07:47,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:07:47,995 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand 13 states. [2020-10-29 12:07:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:07:49,196 INFO L93 Difference]: Finished difference Result 166 states and 283 transitions. [2020-10-29 12:07:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:07:49,197 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-29 12:07:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:07:49,199 INFO L225 Difference]: With dead ends: 166 [2020-10-29 12:07:49,199 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 12:07:49,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:07:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 12:07:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2020-10-29 12:07:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 12:07:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 112 transitions. [2020-10-29 12:07:49,244 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 112 transitions. Word has length 70 [2020-10-29 12:07:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:07:49,245 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 112 transitions. [2020-10-29 12:07:49,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:07:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 112 transitions. [2020-10-29 12:07:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 12:07:49,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:07:49,249 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2020-10-29 12:07:49,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:07:49,249 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:07:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:07:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2095812673, now seen corresponding path program 1 times [2020-10-29 12:07:49,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:07:49,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095882513] [2020-10-29 12:07:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:07:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:07:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:07:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:54,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:07:54,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:07:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:54,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:56,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:59,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:07:59,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:07:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:07:59,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:59,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:07:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:07:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:07:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:07:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:59,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 12:07:59,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:07:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-29 12:07:59,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:59,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:07:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:07:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:07:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:59,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:07:59,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:59,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:07:59,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:59,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:07:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:07:59,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:59,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:07:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:59,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:59,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:07:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:59,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:07:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:07:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:07:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:59,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:07:59,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:07:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:07:59,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:59,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:07:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:07:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:07:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:59,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:07:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:07:59,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:07:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:07:59,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:59,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:07:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:07:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:07:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:07:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 12:07:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:07:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:07:59,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:07:59,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:08:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 12:08:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:08:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:08:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:08:00,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:08:00,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:08:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:08:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:08:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:08:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:08:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:08:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:08:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:08:00,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-29 12:08:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:08:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:08:00,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:08:00,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:08:00,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:08:00,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:08:00,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:08:00,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:08:00,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:08:00,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:08:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:08:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:08:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 25 proven. 31 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 12:08:00,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095882513] [2020-10-29 12:08:00,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:08:00,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:08:00,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392177262] [2020-10-29 12:08:00,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:08:00,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:08:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:08:00,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:08:00,111 INFO L87 Difference]: Start difference. First operand 79 states and 112 transitions. Second operand 13 states. [2020-10-29 12:08:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:08:01,293 INFO L93 Difference]: Finished difference Result 161 states and 249 transitions. [2020-10-29 12:08:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:08:01,294 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-29 12:08:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:08:01,295 INFO L225 Difference]: With dead ends: 161 [2020-10-29 12:08:01,295 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 12:08:01,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:08:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 12:08:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2020-10-29 12:08:01,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 12:08:01,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2020-10-29 12:08:01,327 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 69 [2020-10-29 12:08:01,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:08:01,328 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2020-10-29 12:08:01,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:08:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2020-10-29 12:08:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:08:01,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:08:01,332 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 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] [2020-10-29 12:08:01,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:08:01,332 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:08:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:08:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1406199094, now seen corresponding path program 1 times [2020-10-29 12:08:01,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:08:01,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185759296] [2020-10-29 12:08:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:08:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 12:08:01,350 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 12:08:01,350 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 12:08:01,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:08:01,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:08:01 BoogieIcfgContainer [2020-10-29 12:08:01,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:08:01,381 INFO L168 Benchmark]: Toolchain (without parser) took 80488.46 ms. Allocated memory was 155.2 MB in the beginning and 467.7 MB in the end (delta: 312.5 MB). Free memory was 130.8 MB in the beginning and 183.7 MB in the end (delta: -53.0 MB). Peak memory consumption was 260.5 MB. Max. memory is 8.0 GB. [2020-10-29 12:08:01,382 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 99.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:08:01,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.40 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 120.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 12:08:01,383 INFO L168 Benchmark]: Boogie Preprocessor took 37.16 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 12:08:01,384 INFO L168 Benchmark]: RCFGBuilder took 522.45 ms. Allocated memory is still 155.2 MB. Free memory was 118.9 MB in the beginning and 138.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-29 12:08:01,385 INFO L168 Benchmark]: TraceAbstraction took 79659.01 ms. Allocated memory was 155.2 MB in the beginning and 467.7 MB in the end (delta: 312.5 MB). Free memory was 138.2 MB in the beginning and 183.7 MB in the end (delta: -45.6 MB). Peak memory consumption was 267.4 MB. Max. memory is 8.0 GB. [2020-10-29 12:08:01,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 99.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.40 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 120.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.16 ms. Allocated memory is still 155.2 MB. Free memory was 120.3 MB in the beginning and 118.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 522.45 ms. Allocated memory is still 155.2 MB. Free memory was 118.9 MB in the beginning and 138.6 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 79659.01 ms. Allocated memory was 155.2 MB in the beginning and 467.7 MB in the end (delta: 312.5 MB). Free memory was 138.2 MB in the beginning and 183.7 MB in the end (delta: -45.6 MB). Peak memory consumption was 267.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int x = 4; [L39] CALL, EXPR fibo1(x) [L10] COND FALSE !(n < 1) [L12] COND FALSE !(n == 1) [L15] CALL, EXPR fibo2(n-1) [L20] COND FALSE !(n < 1) [L22] COND FALSE !(n == 1) [L25] CALL, EXPR fibo1(n-1) [L10] COND FALSE !(n < 1) [L12] COND FALSE !(n == 1) [L15] CALL, EXPR fibo2(n-1) [L20] COND FALSE !(n < 1) [L22] COND TRUE n == 1 [L23] return 1; [L15] RET, EXPR fibo2(n-1) [L15] CALL, EXPR fibo2(n-2) [L20] COND TRUE n < 1 [L21] return 0; [L15] RET, EXPR fibo2(n-2) [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) [L25] CALL, EXPR fibo1(n-2) [L10] COND FALSE !(n < 1) [L12] COND TRUE n == 1 [L13] return 1; [L25] RET, EXPR fibo1(n-2) [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) [L15] CALL, EXPR fibo2(n-2) [L20] COND FALSE !(n < 1) [L22] COND FALSE !(n == 1) [L25] CALL, EXPR fibo1(n-1) [L10] COND FALSE !(n < 1) [L12] COND TRUE n == 1 [L13] return 1; [L25] RET, EXPR fibo1(n-1) [L25] CALL, EXPR fibo1(n-2) [L10] COND TRUE n < 1 [L11] return 0; [L25] RET, EXPR fibo1(n-2) [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) [L39] int result = fibo1(x); [L40] COND TRUE result == 3 [L41] CALL reach_error() [L4] __assert_fail("0", "fibo_2calls_4-2.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 79.5s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 254 SDtfs, 547 SDslu, 593 SDs, 0 SdLazy, 2229 SolverSat, 450 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 312 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 85 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 71.4s InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 474 ConstructedInterpolants, 0 QuantifiedInterpolants, 66206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 291/424 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...