/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:31:43,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:31:43,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:31:43,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:31:43,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:31:43,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:31:43,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:31:43,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:31:43,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:31:43,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:31:43,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:31:43,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:31:43,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:31:43,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:31:43,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:31:43,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:31:43,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:31:43,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:31:43,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:31:43,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:31:43,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:31:43,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:31:43,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:31:43,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:31:43,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:31:43,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:31:43,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:31:43,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:31:43,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:31:43,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:31:43,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:31:43,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:31:43,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:31:43,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:31:43,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:31:43,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:31:43,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:31:43,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:31:43,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:31:43,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:31:43,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:31:43,241 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 [2020-10-14 07:31:43,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:31:43,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:31:43,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:31:43,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:31:43,274 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:31:43,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:31:43,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:31:43,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:31:43,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:31:43,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:31:43,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:31:43,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:31:43,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:31:43,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:31:43,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:31:43,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:31:43,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:31:43,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:31:43,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:31:43,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:31:43,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:31:43,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:31:43,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:31:43,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:31:43,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:31:43,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:31:43,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:31:43,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:31:43,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:31:43,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:31:43,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:31:43,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:31:43,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:31:43,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:31:43,583 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:31:43,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-14 07:31:43,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add919915/4d889126eb884c0ca47d33c7ae37beaf/FLAG3b8eeb583 [2020-10-14 07:31:44,140 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:31:44,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-14 07:31:44,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add919915/4d889126eb884c0ca47d33c7ae37beaf/FLAG3b8eeb583 [2020-10-14 07:31:44,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add919915/4d889126eb884c0ca47d33c7ae37beaf [2020-10-14 07:31:44,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:31:44,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:31:44,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:31:44,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:31:44,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:31:44,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3225ae23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44, skipping insertion in model container [2020-10-14 07:31:44,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:31:44,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:31:44,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:31:44,705 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:31:44,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:31:44,737 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:31:44,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44 WrapperNode [2020-10-14 07:31:44,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:31:44,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:31:44,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:31:44,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:31:44,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (1/1) ... [2020-10-14 07:31:44,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:31:44,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:31:44,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:31:44,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:31:44,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (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 [2020-10-14 07:31:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:31:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:31:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-14 07:31:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-14 07:31:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:31:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:31:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:31:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-14 07:31:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-14 07:31:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:31:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:31:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:31:45,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:31:45,106 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 07:31:45,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:31:45 BoogieIcfgContainer [2020-10-14 07:31:45,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:31:45,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:31:45,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:31:45,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:31:45,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:31:44" (1/3) ... [2020-10-14 07:31:45,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebbd085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:31:45, skipping insertion in model container [2020-10-14 07:31:45,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:31:44" (2/3) ... [2020-10-14 07:31:45,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebbd085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:31:45, skipping insertion in model container [2020-10-14 07:31:45,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:31:45" (3/3) ... [2020-10-14 07:31:45,119 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-10-14 07:31:45,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:31:45,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:31:45,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:31:45,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:31:45,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:31:45,177 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:31:45,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:31:45,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:31:45,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:31:45,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:31:45,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:31:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 07:31:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 07:31:45,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:31:45,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:31:45,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:31:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:31:45,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-10-14 07:31:45,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:31:45,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033668731] [2020-10-14 07:31:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:31:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:45,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:45,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 07:31:45,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:31:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 07:31:45,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:45,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:31:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:31:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:31:45,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:31:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:31:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:45,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:45,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:31:45,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:31:45,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:45,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:45,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:31:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:31:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:45,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:31:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:31:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:45,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:31:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:31:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:31:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:31:45,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033668731] [2020-10-14 07:31:45,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:31:45,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:31:45,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721565904] [2020-10-14 07:31:45,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:31:45,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:31:45,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:31:45,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:31:45,657 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-14 07:31:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:31:45,776 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-10-14 07:31:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:31:45,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 07:31:45,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:31:45,793 INFO L225 Difference]: With dead ends: 44 [2020-10-14 07:31:45,793 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:31:45,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:31:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:31:45,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-14 07:31:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 07:31:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-14 07:31:45,854 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-10-14 07:31:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:31:45,855 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-14 07:31:45,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:31:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-14 07:31:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 07:31:45,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:31:45,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:31:45,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:31:45,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:31:45,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:31:45,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-10-14 07:31:45,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:31:45,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669217298] [2020-10-14 07:31:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:31:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:46,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:46,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:31:46,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:31:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 07:31:46,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:46,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:31:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:31:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:31:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:31:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:46,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:46,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:31:46,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:31:46,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:46,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:31:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:46,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:46,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:31:46,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:31:46,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:46,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:31:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:31:46,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:31:46,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:31:46,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669217298] [2020-10-14 07:31:46,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:31:46,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:31:46,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357842823] [2020-10-14 07:31:46,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:31:46,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:31:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:31:46,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:31:46,122 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-10-14 07:31:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:31:46,191 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-10-14 07:31:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:31:46,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-14 07:31:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:31:46,193 INFO L225 Difference]: With dead ends: 36 [2020-10-14 07:31:46,194 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:31:46,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:31:46,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:31:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-14 07:31:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 07:31:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-14 07:31:46,206 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-10-14 07:31:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:31:46,206 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-14 07:31:46,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:31:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-14 07:31:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 07:31:46,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:31:46,209 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] [2020-10-14 07:31:46,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:31:46,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:31:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:31:46,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-10-14 07:31:46,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:31:46,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151013420] [2020-10-14 07:31:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:31:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:47,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:31:47,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:31:47,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-14 07:31:47,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:47,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:47,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:31:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:31:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:31:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:47,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:31:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:47,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:47,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:31:47,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:31:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:47,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:31:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:47,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:31:47,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:31:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 07:31:47,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:47,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:47,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:31:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:31:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:31:47,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:31:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:47,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:31:47,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:31:47,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:47,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:31:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:47,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:31:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:31:47,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:31:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:47,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:31:47,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:31:47,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:47,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:31:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:31:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:31:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 07:31:47,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151013420] [2020-10-14 07:31:47,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:31:47,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:31:47,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632201297] [2020-10-14 07:31:47,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:31:47,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:31:47,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:31:47,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:31:47,577 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-10-14 07:31:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:31:47,778 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2020-10-14 07:31:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:31:47,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-14 07:31:47,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:31:47,783 INFO L225 Difference]: With dead ends: 48 [2020-10-14 07:31:47,784 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:31:47,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:31:47,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:31:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-14 07:31:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 07:31:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2020-10-14 07:31:47,810 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 26 [2020-10-14 07:31:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:31:47,810 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2020-10-14 07:31:47,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:31:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2020-10-14 07:31:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 07:31:47,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:31:47,812 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] [2020-10-14 07:31:47,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:31:47,813 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:31:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:31:47,813 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-10-14 07:31:47,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:31:47,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865506952] [2020-10-14 07:31:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:31:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 07:31:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:31:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 07:31:48,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:48,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:31:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:31:48,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 07:31:48,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:31:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:48,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:31:48,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:31:48,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:48,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:31:48,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:31:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:48,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 07:31:48,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:31:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 07:31:48,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:48,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:31:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:31:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:31:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:31:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:48,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:31:48,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:48,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:31:48,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:48,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:31:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:31:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:48,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 07:31:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:48,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:31:48,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:31:48,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:48,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:31:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:31:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 07:31:48,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865506952] [2020-10-14 07:31:48,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:31:48,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:31:48,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564951698] [2020-10-14 07:31:48,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:31:48,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:31:48,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:31:48,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:31:48,357 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand 7 states. [2020-10-14 07:31:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:31:48,496 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-10-14 07:31:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:31:48,497 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-14 07:31:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:31:48,500 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:31:48,500 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 07:31:48,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:31:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 07:31:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-14 07:31:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 07:31:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2020-10-14 07:31:48,513 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 27 [2020-10-14 07:31:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:31:48,514 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2020-10-14 07:31:48,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:31:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2020-10-14 07:31:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 07:31:48,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:31:48,517 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] [2020-10-14 07:31:48,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:31:48,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:31:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:31:48,517 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-10-14 07:31:48,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:31:48,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805613968] [2020-10-14 07:31:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:31:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:53,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:31:53,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 07:31:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:31:53,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:53,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:31:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:31:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 07:31:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:31:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:31:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:53,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:31:53,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:31:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:53,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:31:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:31:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:53,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:54,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:31:54,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:31:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-10-14 07:31:54,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:54,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:31:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:31:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 07:31:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:54,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:31:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:54,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:31:54,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:31:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:31:54,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:54,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:31:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:31:54,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:31:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:54,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:31:54,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:54,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:31:54,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:54,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:54,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:54,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:31:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:54,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:31:54,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:31:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:54,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:31:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:54,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:31:54,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:31:54,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:54,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:31:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:31:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:31:54,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805613968] [2020-10-14 07:31:54,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:31:54,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:31:54,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006431079] [2020-10-14 07:31:54,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:31:54,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:31:54,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:31:54,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:31:54,723 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand 7 states. [2020-10-14 07:31:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:31:54,865 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2020-10-14 07:31:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:31:54,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-14 07:31:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:31:54,868 INFO L225 Difference]: With dead ends: 60 [2020-10-14 07:31:54,868 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 07:31:54,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:31:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 07:31:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-14 07:31:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 07:31:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2020-10-14 07:31:54,881 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 39 [2020-10-14 07:31:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:31:54,882 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 67 transitions. [2020-10-14 07:31:54,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:31:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 67 transitions. [2020-10-14 07:31:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 07:31:54,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:31:54,884 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] [2020-10-14 07:31:54,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:31:54,885 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:31:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:31:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1428455685, now seen corresponding path program 1 times [2020-10-14 07:31:54,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:31:54,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870524419] [2020-10-14 07:31:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:31:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:59,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:59,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 07:31:59,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 07:31:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:31:59,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:59,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:31:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:31:59,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:31:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:31:59,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:31:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:59,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:59,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:31:59,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:31:59,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:31:59,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:31:59,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:31:59,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:31:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:31:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:31:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:31:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:31:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:31:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:31:59,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:31:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:01,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:32:01,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 07:32:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-14 07:32:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:01,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:32:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:32:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 07:32:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:01,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:01,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:32:01,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:32:01,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:32:01,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:01,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:01,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:32:01,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:01,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:01,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:01,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:01,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:01,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:01,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:32:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:01,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:01,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:01,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:01,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:01,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:01,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:32:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:01,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:01,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:01,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:32:01,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:01,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:32:01,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:32:01,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870524419] [2020-10-14 07:32:01,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:32:01,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:32:01,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104009090] [2020-10-14 07:32:01,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:32:01,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:32:01,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:32:01,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:32:01,570 INFO L87 Difference]: Start difference. First operand 48 states and 67 transitions. Second operand 7 states. [2020-10-14 07:32:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:32:01,717 INFO L93 Difference]: Finished difference Result 64 states and 93 transitions. [2020-10-14 07:32:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:32:01,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-14 07:32:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:32:01,719 INFO L225 Difference]: With dead ends: 64 [2020-10-14 07:32:01,720 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:32:01,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:32:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:32:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-10-14 07:32:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:32:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2020-10-14 07:32:01,732 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 40 [2020-10-14 07:32:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:32:01,732 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2020-10-14 07:32:01,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:32:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2020-10-14 07:32:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 07:32:01,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:32:01,735 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] [2020-10-14 07:32:01,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:32:01,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:32:01,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:32:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash -910208130, now seen corresponding path program 1 times [2020-10-14 07:32:01,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:32:01,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45912116] [2020-10-14 07:32:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:32:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:06,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:06,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:32:06,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 07:32:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:32:06,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:06,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:32:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:32:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:06,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:06,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:32:06,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:06,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:06,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:06,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:06,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:06,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:32:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:09,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:32:09,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 07:32:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2445 [2020-10-14 07:32:09,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:09,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 07:32:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:09,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:09,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:32:09,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:32:09,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:32:09,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:09,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:09,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:09,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:32:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:09,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:09,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:09,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:09,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:32:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:32:09,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:32:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:09,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:32:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:09,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:09,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:09,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:09,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:09,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:32:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:32:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:09,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:32:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:09,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:09,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:32:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:09,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 07:32:09,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45912116] [2020-10-14 07:32:09,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:32:09,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:32:09,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984969494] [2020-10-14 07:32:09,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:32:09,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:32:09,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:32:09,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:32:09,309 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand 6 states. [2020-10-14 07:32:09,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:32:09,383 INFO L93 Difference]: Finished difference Result 112 states and 181 transitions. [2020-10-14 07:32:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:32:09,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 07:32:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:32:09,385 INFO L225 Difference]: With dead ends: 112 [2020-10-14 07:32:09,385 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 07:32:09,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:32:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 07:32:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-10-14 07:32:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:32:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2020-10-14 07:32:09,398 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 52 [2020-10-14 07:32:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:32:09,398 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2020-10-14 07:32:09,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:32:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2020-10-14 07:32:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:32:09,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:32:09,401 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] [2020-10-14 07:32:09,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:32:09,402 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:32:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:32:09,402 INFO L82 PathProgramCache]: Analyzing trace with hash 794281190, now seen corresponding path program 1 times [2020-10-14 07:32:09,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:32:09,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584478526] [2020-10-14 07:32:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:32:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:09,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:12,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:14,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 07:32:14,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 07:32:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:32:14,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:14,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:32:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 07:32:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 07:32:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:32:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:14,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:32:14,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:14,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:32:14,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:14,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:32:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:14,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:16,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 07:32:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 07:32:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2114 [2020-10-14 07:32:16,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:16,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:32:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:32:16,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 07:32:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:16,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:16,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 07:32:16,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:32:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 07:32:16,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:16,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:32:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 07:32:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:16,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:16,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:16,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:32:16,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:16,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:32:16,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 07:32:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:16,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:16,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:16,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:16,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:16,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:32:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 07:32:16,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:32:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:32:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:16,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:32:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:32:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:16,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:16,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:16,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:16,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:16,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 07:32:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:16,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:16,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:16,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:16,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:16,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 07:32:16,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584478526] [2020-10-14 07:32:16,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:32:16,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:32:16,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139567259] [2020-10-14 07:32:16,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:32:16,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:32:16,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:32:16,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:32:16,805 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand 10 states. [2020-10-14 07:32:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:32:17,170 INFO L93 Difference]: Finished difference Result 144 states and 254 transitions. [2020-10-14 07:32:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:32:17,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-14 07:32:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:32:17,174 INFO L225 Difference]: With dead ends: 144 [2020-10-14 07:32:17,174 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 07:32:17,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:32:17,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 07:32:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-10-14 07:32:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 07:32:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 119 transitions. [2020-10-14 07:32:17,194 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 119 transitions. Word has length 54 [2020-10-14 07:32:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:32:17,195 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 119 transitions. [2020-10-14 07:32:17,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:32:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 119 transitions. [2020-10-14 07:32:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 07:32:17,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:32:17,197 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] [2020-10-14 07:32:17,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:32:17,197 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:32:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:32:17,198 INFO L82 PathProgramCache]: Analyzing trace with hash 736840020, now seen corresponding path program 2 times [2020-10-14 07:32:17,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:32:17,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490158785] [2020-10-14 07:32:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:32:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:18,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:22,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 07:32:22,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-14 07:32:22,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:32:22,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:22,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:22,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:32:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:32:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:32:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:32:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:22,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:32:22,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:22,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:32:22,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:22,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:22,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:32:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:25,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 07:32:27,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 07:32:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:32:27,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:32:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 07:32:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:32:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:32:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:32:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 07:32:27,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:32:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:32:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:32:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:32:27,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:32:27,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:32:27,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:32:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:27,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:27,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:27,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:32:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:32:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:27,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:27,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:32:27,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:32:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:32:27,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:27,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:32:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:32:27,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:32:27,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-14 07:32:27,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:32:27,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:27,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:32:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:32:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 07:32:27,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:27,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:32:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:27,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:27,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:27,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:32:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:27,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:27,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:27,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:27,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:27,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 20 proven. 31 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 07:32:27,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490158785] [2020-10-14 07:32:27,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:32:27,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:32:27,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467726535] [2020-10-14 07:32:27,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:32:27,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:32:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:32:27,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:32:27,971 INFO L87 Difference]: Start difference. First operand 77 states and 119 transitions. Second operand 8 states. [2020-10-14 07:32:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:32:28,129 INFO L93 Difference]: Finished difference Result 157 states and 266 transitions. [2020-10-14 07:32:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:32:28,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-14 07:32:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:32:28,131 INFO L225 Difference]: With dead ends: 157 [2020-10-14 07:32:28,131 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 07:32:28,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:32:28,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 07:32:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2020-10-14 07:32:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 07:32:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 116 transitions. [2020-10-14 07:32:28,144 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 116 transitions. Word has length 78 [2020-10-14 07:32:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:32:28,144 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 116 transitions. [2020-10-14 07:32:28,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:32:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 116 transitions. [2020-10-14 07:32:28,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 07:32:28,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:32:28,146 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] [2020-10-14 07:32:28,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:32:28,146 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:32:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:32:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1261383985, now seen corresponding path program 1 times [2020-10-14 07:32:28,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:32:28,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837707977] [2020-10-14 07:32:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:32:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 07:32:33,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 07:32:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:32:33,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:33,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:32:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:33,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:32:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:33,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:32:33,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:32:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:33,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:32:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:33,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:38,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:32:38,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:32:38,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 07:32:38,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:32:38,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:38,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:32:38,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:32:38,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:32:38,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:38,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:38,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:32:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:32:38,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:32:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:38,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:38,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:38,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:38,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:32:38,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:38,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:38,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:32:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:38,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:38,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:32:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:32:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 07:32:38,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:32:38,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:32:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:38,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:38,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:38,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:38,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 07:32:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:38,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:38,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:32:38,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:38,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:38,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 07:32:38,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837707977] [2020-10-14 07:32:38,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:32:38,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:32:38,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573010214] [2020-10-14 07:32:38,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:32:38,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:32:38,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:32:38,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:32:38,463 INFO L87 Difference]: Start difference. First operand 77 states and 116 transitions. Second operand 6 states. [2020-10-14 07:32:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:32:38,523 INFO L93 Difference]: Finished difference Result 137 states and 220 transitions. [2020-10-14 07:32:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:32:38,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 07:32:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:32:38,525 INFO L225 Difference]: With dead ends: 137 [2020-10-14 07:32:38,525 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:32:38,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:32:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:32:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-14 07:32:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 07:32:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-10-14 07:32:38,535 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 67 [2020-10-14 07:32:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:32:38,535 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-10-14 07:32:38,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:32:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-10-14 07:32:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:32:38,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:32:38,537 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:32:38,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:32:38,537 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:32:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:32:38,538 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 1 times [2020-10-14 07:32:38,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:32:38,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301826667] [2020-10-14 07:32:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:32:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:38,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:43,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 07:32:43,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 07:32:43,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:32:43,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:43,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:43,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:32:43,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:32:43,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 07:32:43,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:43,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:32:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:43,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:32:43,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:32:43,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:43,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:43,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:43,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:32:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:43,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:45,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:48,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 07:32:48,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 07:32:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:32:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:48,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:32:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 07:32:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 07:32:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:48,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 07:32:48,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:32:48,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 07:32:48,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:48,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:32:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:48,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 07:32:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 07:32:48,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 07:32:48,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:48,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:32:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:48,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:48,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:48,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 07:32:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:32:48,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:48,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:32:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:32:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:32:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:48,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:48,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:48,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:48,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:32:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:32:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 07:32:49,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:32:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-10-14 07:32:49,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:49,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:32:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:32:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 07:32:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:49,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:49,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 07:32:49,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 07:32:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 07:32:49,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:49,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:32:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 07:32:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:49,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-14 07:32:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:49,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:32:49,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:49,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 07:32:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:49,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:32:49,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:32:49,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:49,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:32:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:32:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:32:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:32:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:32:49,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:32:49,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:32:49,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:32:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:32:49,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:32:49,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:32:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:32:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:32:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 07:32:49,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:32:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 44 proven. 35 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-14 07:32:49,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301826667] [2020-10-14 07:32:49,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:32:49,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:32:49,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618754566] [2020-10-14 07:32:49,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:32:49,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:32:49,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:32:49,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:32:49,976 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 14 states. [2020-10-14 07:32:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:32:50,491 INFO L93 Difference]: Finished difference Result 150 states and 249 transitions. [2020-10-14 07:32:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:32:50,491 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-14 07:32:50,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:32:50,494 INFO L225 Difference]: With dead ends: 150 [2020-10-14 07:32:50,494 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 07:32:50,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2020-10-14 07:32:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 07:32:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-10-14 07:32:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 07:32:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 103 transitions. [2020-10-14 07:32:50,505 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 103 transitions. Word has length 82 [2020-10-14 07:32:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:32:50,505 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 103 transitions. [2020-10-14 07:32:50,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:32:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 103 transitions. [2020-10-14 07:32:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 07:32:50,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:32:50,507 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] [2020-10-14 07:32:50,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:32:50,507 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:32:50,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:32:50,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1156896337, now seen corresponding path program 1 times [2020-10-14 07:32:50,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:32:50,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597433485] [2020-10-14 07:32:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:32:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 07:32:50,517 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 07:32:50,517 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 07:32:50,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:32:50,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:32:50 BoogieIcfgContainer [2020-10-14 07:32:50,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 07:32:50,546 INFO L168 Benchmark]: Toolchain (without parser) took 66040.23 ms. Allocated memory was 147.8 MB in the beginning and 811.1 MB in the end (delta: 663.2 MB). Free memory was 104.5 MB in the beginning and 179.5 MB in the end (delta: -74.9 MB). Peak memory consumption was 588.3 MB. Max. memory is 7.1 GB. [2020-10-14 07:32:50,547 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 07:32:50,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.02 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 94.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-14 07:32:50,548 INFO L168 Benchmark]: Boogie Preprocessor took 108.17 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 07:32:50,549 INFO L168 Benchmark]: RCFGBuilder took 263.07 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 170.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-10-14 07:32:50,550 INFO L168 Benchmark]: TraceAbstraction took 65431.81 ms. Allocated memory was 204.5 MB in the beginning and 811.1 MB in the end (delta: 606.6 MB). Free memory was 169.4 MB in the beginning and 179.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 596.6 MB. Max. memory is 7.1 GB. [2020-10-14 07:32:50,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 230.02 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 94.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.17 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.07 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 170.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 65431.81 ms. Allocated memory was 204.5 MB in the beginning and 811.1 MB in the end (delta: 606.6 MB). Free memory was 169.4 MB in the beginning and 179.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 596.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 4; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 3 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 65.3s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 305 SDtfs, 256 SDslu, 1069 SDs, 0 SdLazy, 1089 SolverSat, 148 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 52 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 62.7s InterpolantComputationTime, 560 NumberOfCodeBlocks, 560 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 481 ConstructedInterpolants, 0 QuantifiedInterpolants, 49782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 357/473 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...