/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:00:36,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:00:36,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:00:36,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:00:36,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:00:36,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:00:36,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:00:36,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:00:36,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:00:36,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:00:36,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:00:36,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:00:36,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:00:36,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:00:36,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:00:36,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:00:36,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:00:36,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:00:36,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:00:36,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:00:36,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:00:36,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:00:36,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:00:36,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:00:36,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:00:36,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:00:36,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:00:36,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:00:36,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:00:36,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:00:36,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:00:36,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:00:36,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:00:36,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:00:36,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:00:36,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:00:36,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:00:36,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:00:36,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:00:36,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:00:36,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:00:36,227 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 [2020-09-25 10:00:36,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:00:36,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:00:36,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:00:36,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:00:36,254 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:00:36,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:00:36,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:00:36,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:00:36,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:00:36,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:00:36,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:00:36,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:00:36,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:00:36,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:00:36,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:00:36,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:00:36,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:00:36,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:00:36,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:00:36,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:00:36,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:00:36,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:00:36,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:00:36,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:00:36,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:00:36,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:00:36,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:00:36,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:00:36,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:00:36,259 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:00:36,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:00:36,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:00:36,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:00:36,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:00:36,738 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:00:36,739 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 10:00:36,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/058d7677a/4f9b25061e36440f88dbf778eac17020/FLAG01c4c847f [2020-09-25 10:00:37,297 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:00:37,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-2.c [2020-09-25 10:00:37,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/058d7677a/4f9b25061e36440f88dbf778eac17020/FLAG01c4c847f [2020-09-25 10:00:37,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/058d7677a/4f9b25061e36440f88dbf778eac17020 [2020-09-25 10:00:37,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:00:37,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:00:37,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:37,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:00:37,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:00:37,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:37" (1/1) ... [2020-09-25 10:00:37,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fd9ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:37, skipping insertion in model container [2020-09-25 10:00:37,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:37" (1/1) ... [2020-09-25 10:00:37,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:00:37,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:00:37,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:37,967 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:00:37,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:38,008 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:00:38,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38 WrapperNode [2020-09-25 10:00:38,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:38,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:00:38,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:00:38,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:00:38,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (1/1) ... [2020-09-25 10:00:38,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (1/1) ... [2020-09-25 10:00:38,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (1/1) ... [2020-09-25 10:00:38,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (1/1) ... [2020-09-25 10:00:38,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (1/1) ... [2020-09-25 10:00:38,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (1/1) ... [2020-09-25 10:00:38,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (1/1) ... [2020-09-25 10:00:38,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:00:38,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:00:38,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:00:38,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:00:38,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (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 [2020-09-25 10:00:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:00:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:00:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 10:00:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 10:00:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:00:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:00:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:00:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 10:00:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 10:00:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:00:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:00:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:00:38,489 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:00:38,489 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:00:38,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:38 BoogieIcfgContainer [2020-09-25 10:00:38,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:00:38,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:00:38,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:00:38,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:00:38,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:00:37" (1/3) ... [2020-09-25 10:00:38,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9483cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:38, skipping insertion in model container [2020-09-25 10:00:38,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:38" (2/3) ... [2020-09-25 10:00:38,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9483cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:38, skipping insertion in model container [2020-09-25 10:00:38,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:38" (3/3) ... [2020-09-25 10:00:38,506 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2020-09-25 10:00:38,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:00:38,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:00:38,560 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:00:38,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:00:38,617 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:00:38,617 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:00:38,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:00:38,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:00:38,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:00:38,618 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:00:38,618 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:00:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 10:00:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:00:38,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:38,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:38,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:38,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 10:00:38,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:38,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124960889] [2020-09-25 10:00:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:00:39,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 10:00:39,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:00:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:00:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:39,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:39,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:39,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:00:39,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:00:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:00:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:00:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:00:39,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124960889] [2020-09-25 10:00:39,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:39,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:39,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22557773] [2020-09-25 10:00:39,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:39,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:39,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:39,240 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 10:00:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:39,322 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 10:00:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:00:39,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:00:39,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:39,338 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:39,339 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 10:00:39,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:00:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 10:00:39,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 10:00:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:39,403 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 10:00:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:39,404 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:39,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 10:00:39,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:39,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:39,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:00:39,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:39,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 10:00:39,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:39,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785180573] [2020-09-25 10:00:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:00:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 10:00:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:39,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:39,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:39,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:39,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:00:39,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:39,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:00:39,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:39,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:39,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:00:39,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785180573] [2020-09-25 10:00:39,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:39,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:39,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931084155] [2020-09-25 10:00:39,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:39,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:39,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:39,746 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 10:00:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:39,827 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 10:00:39,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:00:39,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 10:00:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:39,830 INFO L225 Difference]: With dead ends: 50 [2020-09-25 10:00:39,830 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:00:39,832 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 [2020-09-25 10:00:39,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:00:39,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 10:00:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:39,843 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 10:00:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:39,843 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:39,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 10:00:39,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:39,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:39,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:00:39,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:39,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:39,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 10:00:39,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:39,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131542983] [2020-09-25 10:00:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:41,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:41,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 10:00:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2023 [2020-09-25 10:00:41,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:41,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:00:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:41,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:41,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:41,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:41,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:00:41,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:41,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:41,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:41,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:42,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:42,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:42,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 10:00:42,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:42,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:42,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:42,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:42,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:00:42,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:42,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:42,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:42,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:42,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:00:42,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:42,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:42,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:00:42,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131542983] [2020-09-25 10:00:42,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:42,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:00:42,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227266188] [2020-09-25 10:00:42,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:42,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:42,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:42,228 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 10:00:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:42,363 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 10:00:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:42,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 10:00:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:42,366 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:42,367 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 10:00:42,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:00:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 10:00:42,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 10:00:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:42,379 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 10:00:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:42,379 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:42,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:42,380 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:00:42,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:42,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:42,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:00:42,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:42,383 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 10:00:42,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:42,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210988181] [2020-09-25 10:00:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:42,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:00:44,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:00:44,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-09-25 10:00:44,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:00:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 10:00:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:44,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:00:44,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:44,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:00:44,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:44,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:00:44,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210988181] [2020-09-25 10:00:44,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:44,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:44,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662393693] [2020-09-25 10:00:44,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:44,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:44,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:44,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:44,968 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 10:00:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:45,112 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 10:00:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:45,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 10:00:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:45,115 INFO L225 Difference]: With dead ends: 72 [2020-09-25 10:00:45,116 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 10:00:45,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:00:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 10:00:45,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 10:00:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 10:00:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 10:00:45,129 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 10:00:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:45,129 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 10:00:45,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 10:00:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:00:45,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:45,132 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:45,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:00:45,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:45,133 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 10:00:45,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:45,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119572807] [2020-09-25 10:00:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:50,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:00:50,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:00:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:00:50,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:50,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:00:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:50,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:50,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:50,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:50,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:50,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:50,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:50,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:53,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:00:53,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:00:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3651 [2020-09-25 10:00:53,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:53,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:00:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:53,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 10:00:53,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:53,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:53,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:53,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:53,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:53,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:53,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:53,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:53,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:00:53,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:53,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:53,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:53,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:53,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:00:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:53,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:00:54,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119572807] [2020-09-25 10:00:54,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:54,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:54,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001591736] [2020-09-25 10:00:54,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:54,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:54,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:54,030 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 10:00:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:54,161 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 10:00:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:54,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 10:00:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:54,163 INFO L225 Difference]: With dead ends: 64 [2020-09-25 10:00:54,163 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 10:00:54,164 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 [2020-09-25 10:00:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 10:00:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 10:00:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:54,174 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 10:00:54,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:54,174 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:54,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:00:54,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:54,178 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:54,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:00:54,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 10:00:54,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:54,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188530131] [2020-09-25 10:00:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:59,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:00:59,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:00:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:59,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:59,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:00:59,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:59,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:59,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:59,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:59,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:59,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:59,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:59,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:04,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:01:04,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:01:04,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:01:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:04,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:01:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:01:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 10:01:04,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:04,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:01:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:04,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:04,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:01:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:04,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:04,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:04,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:04,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:01:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:01:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:01:04,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:01:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:04,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:01:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:04,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 10:01:04,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188530131] [2020-09-25 10:01:04,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:04,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:01:04,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450020472] [2020-09-25 10:01:04,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:01:04,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:04,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:01:04,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:04,574 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 10:01:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:04,809 INFO L93 Difference]: Finished difference Result 128 states and 179 transitions. [2020-09-25 10:01:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:01:04,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 10:01:04,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:04,812 INFO L225 Difference]: With dead ends: 128 [2020-09-25 10:01:04,812 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 10:01:04,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:01:04,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 10:01:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-09-25 10:01:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 10:01:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-09-25 10:01:04,827 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 67 [2020-09-25 10:01:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:04,828 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-09-25 10:01:04,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:01:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-09-25 10:01:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:01:04,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:04,831 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:04,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:01:04,832 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:04,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:04,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 10:01:04,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:04,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492295670] [2020-09-25 10:01:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:09,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:01:09,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:01:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:01:09,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:09,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:01:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:09,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:09,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:09,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:09,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:09,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:01:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:01:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:01:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:14,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:01:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:14,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:15,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:01:15,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:15,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 10:01:15,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:15,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:01:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:15,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:01:15,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:15,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:01:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:15,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:15,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:15,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 10:01:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:15,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:01:15,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:01:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-09-25 10:01:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:15,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:01:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:16,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:16,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:16,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:16,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:16,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:16,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:01:16,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:16,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:16,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:16,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:16,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:16,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 10:01:16,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492295670] [2020-09-25 10:01:16,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:16,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:01:16,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753383468] [2020-09-25 10:01:16,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:01:16,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:16,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:01:16,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:01:16,083 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 10 states. [2020-09-25 10:01:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:16,440 INFO L93 Difference]: Finished difference Result 196 states and 302 transitions. [2020-09-25 10:01:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:01:16,441 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 10:01:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:16,445 INFO L225 Difference]: With dead ends: 196 [2020-09-25 10:01:16,446 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 10:01:16,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:01:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 10:01:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2020-09-25 10:01:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 10:01:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2020-09-25 10:01:16,467 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 71 [2020-09-25 10:01:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:16,467 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2020-09-25 10:01:16,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:01:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2020-09-25 10:01:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 10:01:16,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:16,470 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:16,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:01:16,470 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:16,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:16,470 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 1 times [2020-09-25 10:01:16,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:16,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214157351] [2020-09-25 10:01:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:19,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:21,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 10:01:21,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:01:21,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:01:21,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:21,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:21,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:21,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 10:01:21,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:21,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:21,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:21,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:21,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:21,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:26,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:01:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:26,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:01:27,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:01:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-09-25 10:01:27,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:27,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:01:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:27,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:27,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:01:27,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:01:27,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:27,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:01:27,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:27,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:27,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:01:27,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:27,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:01:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:27,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:27,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:01:27,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:27,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:01:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:27,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:27,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:27,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:27,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:27,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:01:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:27,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:28,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:01:28,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 10:01:28,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:28,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:01:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:28,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:28,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:28,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:28,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:28,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:28,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:28,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:01:28,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:28,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 10:01:28,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214157351] [2020-09-25 10:01:28,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:28,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:01:28,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549008828] [2020-09-25 10:01:28,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:01:28,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:28,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:01:28,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:01:28,162 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand 13 states. [2020-09-25 10:01:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:28,647 INFO L93 Difference]: Finished difference Result 268 states and 443 transitions. [2020-09-25 10:01:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:01:28,648 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-09-25 10:01:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:28,655 INFO L225 Difference]: With dead ends: 268 [2020-09-25 10:01:28,655 INFO L226 Difference]: Without dead ends: 168 [2020-09-25 10:01:28,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:01:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-25 10:01:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 139. [2020-09-25 10:01:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-25 10:01:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 206 transitions. [2020-09-25 10:01:28,701 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 206 transitions. Word has length 86 [2020-09-25 10:01:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:28,701 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 206 transitions. [2020-09-25 10:01:28,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:01:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 206 transitions. [2020-09-25 10:01:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 10:01:28,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:28,709 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:28,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:01:28,709 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash 6794146, now seen corresponding path program 1 times [2020-09-25 10:01:28,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:28,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093572136] [2020-09-25 10:01:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking...