/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/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:58:40,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:58:40,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:58:40,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:58:40,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:58:40,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:58:40,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:58:40,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:58:40,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:58:40,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:58:40,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:58:40,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:58:40,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:58:40,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:58:40,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:58:40,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:58:40,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:58:40,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:58:40,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:58:40,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:58:40,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:58:40,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:58:40,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:58:40,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:58:40,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:58:40,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:58:40,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:58:40,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:58:40,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:58:40,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:58:40,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:58:40,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:58:40,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:58:40,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:58:40,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:58:40,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:58:40,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:58:40,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:58:40,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:58:40,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:58:40,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:58:40,284 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 09:58:40,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:58:40,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:58:40,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:58:40,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:58:40,339 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:58:40,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:58:40,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:58:40,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:58:40,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:58:40,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:58:40,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:58:40,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:58:40,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:58:40,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:58:40,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:58:40,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:58:40,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:58:40,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:58:40,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:58:40,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:58:40,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:58:40,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:58:40,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:58:40,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:58:40,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:58:40,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:58:40,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:58:40,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:58:40,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:58:40,345 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 09:58:40,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:58:40,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:58:40,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:58:40,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:58:40,853 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:58:40,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 09:58:40,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/696823b6e/1c330a18ba194ce19da165a45cfa17bb/FLAG0f3a17744 [2020-09-25 09:58:41,498 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:58:41,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 09:58:41,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/696823b6e/1c330a18ba194ce19da165a45cfa17bb/FLAG0f3a17744 [2020-09-25 09:58:41,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/696823b6e/1c330a18ba194ce19da165a45cfa17bb [2020-09-25 09:58:41,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:58:41,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:58:41,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:41,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:58:41,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:58:41,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:41" (1/1) ... [2020-09-25 09:58:41,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea0c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:41, skipping insertion in model container [2020-09-25 09:58:41,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:41" (1/1) ... [2020-09-25 09:58:41,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:58:41,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:58:42,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:42,144 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:58:42,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:42,184 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:58:42,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42 WrapperNode [2020-09-25 09:58:42,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:42,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:58:42,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:58:42,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:58:42,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (1/1) ... [2020-09-25 09:58:42,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (1/1) ... [2020-09-25 09:58:42,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (1/1) ... [2020-09-25 09:58:42,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (1/1) ... [2020-09-25 09:58:42,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (1/1) ... [2020-09-25 09:58:42,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (1/1) ... [2020-09-25 09:58:42,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (1/1) ... [2020-09-25 09:58:42,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:58:42,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:58:42,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:58:42,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:58:42,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (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 09:58:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:58:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:58:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 09:58:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:58:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:58:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:58:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 09:58:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:58:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:58:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:58:42,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:58:42,594 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:58:42,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:42 BoogieIcfgContainer [2020-09-25 09:58:42,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:58:42,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:58:42,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:58:42,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:58:42,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:58:41" (1/3) ... [2020-09-25 09:58:42,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7941a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:42, skipping insertion in model container [2020-09-25 09:58:42,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:42" (2/3) ... [2020-09-25 09:58:42,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7941a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:42, skipping insertion in model container [2020-09-25 09:58:42,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:42" (3/3) ... [2020-09-25 09:58:42,610 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-25 09:58:42,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:58:42,642 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:58:42,672 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:58:42,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:58:42,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:58:42,723 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:58:42,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:58:42,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:58:42,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:58:42,724 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:58:42,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:58:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 09:58:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 09:58:42,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:42,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:42,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:42,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 09:58:42,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:42,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485963120] [2020-09-25 09:58:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:42,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 09:58:43,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 09:58:43,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:58:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:58:43,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:43,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:58:43,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:43,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:58:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:43,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:58:43,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:58:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,323 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 09:58:43,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485963120] [2020-09-25 09:58:43,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:58:43,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:58:43,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358386000] [2020-09-25 09:58:43,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:58:43,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:43,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:58:43,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:43,361 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-25 09:58:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:43,550 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 09:58:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:58:43,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 09:58:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:43,568 INFO L225 Difference]: With dead ends: 50 [2020-09-25 09:58:43,569 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 09:58:43,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:58:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 09:58:43,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 09:58:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 09:58:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 09:58:43,642 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 09:58:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:43,643 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 09:58:43,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:58:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 09:58:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 09:58:43,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:43,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:43,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:58:43,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:43,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 09:58:43,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:43,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585978360] [2020-09-25 09:58:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 09:58:43,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 09:58:43,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:43,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:58:43,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:58:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:58:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:58:43,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:58:43,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:58:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,961 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 09:58:43,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585978360] [2020-09-25 09:58:43,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:58:43,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:58:43,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069454056] [2020-09-25 09:58:43,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:58:43,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:43,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:58:43,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:43,966 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-25 09:58:44,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:44,103 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 09:58:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:58:44,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 09:58:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:44,105 INFO L225 Difference]: With dead ends: 39 [2020-09-25 09:58:44,105 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 09:58:44,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:58:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 09:58:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 09:58:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 09:58:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 09:58:44,115 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 09:58:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:44,116 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 09:58:44,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:58:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 09:58:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 09:58:44,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:44,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:44,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:58:44,119 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:44,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 09:58:44,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:44,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890599873] [2020-09-25 09:58:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 09:58:44,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-25 09:58:44,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:58:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:58:44,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:58:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:44,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:44,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:58:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:58:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 09:58:44,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:58:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:58:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:44,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:58:44,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:44,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:44,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:58:44,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:58:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:44,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:58:44,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:58:44,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 09:58:45,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890599873] [2020-09-25 09:58:45,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:45,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:58:45,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748465200] [2020-09-25 09:58:45,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:58:45,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:45,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:58:45,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:58:45,009 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-09-25 09:58:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:45,343 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-09-25 09:58:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:58:45,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-09-25 09:58:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:45,346 INFO L225 Difference]: With dead ends: 51 [2020-09-25 09:58:45,346 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 09:58:45,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:58:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 09:58:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-09-25 09:58:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 09:58:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-09-25 09:58:45,358 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2020-09-25 09:58:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:45,359 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-09-25 09:58:45,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:58:45,359 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-09-25 09:58:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 09:58:45,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:45,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:45,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:58:45,362 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:45,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 09:58:45,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:45,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57894192] [2020-09-25 09:58:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:45,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 09:58:46,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-09-25 09:58:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:58:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:58:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:58:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:46,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:46,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:46,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:46,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:58:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:58:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 09:58:46,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:58:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:58:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:58:46,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:58:46,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:58:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:58:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:46,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:58:46,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:58:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 09:58:46,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57894192] [2020-09-25 09:58:46,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:46,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:58:46,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203553114] [2020-09-25 09:58:46,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:58:46,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:46,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:58:46,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:58:46,512 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 12 states. [2020-09-25 09:58:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:46,845 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2020-09-25 09:58:46,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:58:46,846 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 09:58:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:46,849 INFO L225 Difference]: With dead ends: 59 [2020-09-25 09:58:46,849 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 09:58:46,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:58:46,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 09:58:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-09-25 09:58:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 09:58:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-25 09:58:46,861 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 37 [2020-09-25 09:58:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:46,861 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-25 09:58:46,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:58:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-25 09:58:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 09:58:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:46,864 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:46,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:58:46,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash -845339958, now seen corresponding path program 2 times [2020-09-25 09:58:46,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:46,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603537325] [2020-09-25 09:58:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:51,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 09:58:51,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:58:51,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4287 [2020-09-25 09:58:51,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:51,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:58:51,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:58:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:58:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:51,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:51,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:58:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:58:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:58:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2882 [2020-09-25 09:58:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:58:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:58:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:54,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:58:54,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:58:54,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:58:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:58:54,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 09:58:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:58:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:58:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:58:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:54,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:58:54,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:58:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:58:54,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:58:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:58:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:58:54,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:58:54,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:54,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:58:54,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 09:58:54,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603537325] [2020-09-25 09:58:54,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:54,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 09:58:54,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910213406] [2020-09-25 09:58:54,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 09:58:54,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 09:58:54,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:58:54,616 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 14 states. [2020-09-25 09:58:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:55,114 INFO L93 Difference]: Finished difference Result 93 states and 135 transitions. [2020-09-25 09:58:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 09:58:55,115 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-25 09:58:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:55,124 INFO L225 Difference]: With dead ends: 93 [2020-09-25 09:58:55,124 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 09:58:55,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-09-25 09:58:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 09:58:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 45. [2020-09-25 09:58:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 09:58:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-09-25 09:58:55,149 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 53 [2020-09-25 09:58:55,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:55,153 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-09-25 09:58:55,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 09:58:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-09-25 09:58:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 09:58:55,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:55,160 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:55,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:58:55,161 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 1 times [2020-09-25 09:58:55,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:55,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640903238] [2020-09-25 09:58:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:55,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:00,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 09:59:00,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:59:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:59:00,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:00,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:59:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 09:59:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:00,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:00,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:00,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:00,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:00,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:00,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:00,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:00,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:00,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:59:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:00,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:04,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 09:59:04,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:59:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4382 [2020-09-25 09:59:04,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:04,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:04,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:59:04,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:04,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:59:04,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:04,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:04,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:04,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:04,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:59:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 09:59:05,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:59:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:59:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:05,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:59:05,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:59:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:59:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:05,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 09:59:05,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640903238] [2020-09-25 09:59:05,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:05,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:59:05,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744968529] [2020-09-25 09:59:05,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:59:05,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:05,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:59:05,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:59:05,175 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 15 states. [2020-09-25 09:59:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:05,832 INFO L93 Difference]: Finished difference Result 89 states and 121 transitions. [2020-09-25 09:59:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:59:05,834 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 09:59:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:05,836 INFO L225 Difference]: With dead ends: 89 [2020-09-25 09:59:05,836 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 09:59:05,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2020-09-25 09:59:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 09:59:05,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-09-25 09:59:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 09:59:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 99 transitions. [2020-09-25 09:59:05,875 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 99 transitions. Word has length 56 [2020-09-25 09:59:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:05,877 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 99 transitions. [2020-09-25 09:59:05,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:59:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 99 transitions. [2020-09-25 09:59:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 09:59:05,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:05,880 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:05,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:59:05,888 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:05,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:05,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2003700030, now seen corresponding path program 2 times [2020-09-25 09:59:05,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:05,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152945741] [2020-09-25 09:59:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 09:59:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-09-25 09:59:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:59:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 09:59:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:06,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:59:06,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:06,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:59:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:07,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:07,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 09:59:07,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-09-25 09:59:07,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:07,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 09:59:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:08,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:08,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:08,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:08,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:08,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:08,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:59:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 09:59:08,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:08,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:59:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:59:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:08,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:08,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:59:08,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:08,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:59:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:08,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:08,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:08,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:59:08,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:08,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 09:59:08,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152945741] [2020-09-25 09:59:08,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:08,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 09:59:08,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729001030] [2020-09-25 09:59:08,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 09:59:08,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:08,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 09:59:08,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:59:08,318 INFO L87 Difference]: Start difference. First operand 67 states and 99 transitions. Second operand 14 states. [2020-09-25 09:59:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:09,006 INFO L93 Difference]: Finished difference Result 145 states and 230 transitions. [2020-09-25 09:59:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 09:59:09,006 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-25 09:59:09,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:09,010 INFO L225 Difference]: With dead ends: 145 [2020-09-25 09:59:09,010 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 09:59:09,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 09:59:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 09:59:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-09-25 09:59:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 09:59:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2020-09-25 09:59:09,027 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 55 [2020-09-25 09:59:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:09,027 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2020-09-25 09:59:09,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 09:59:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2020-09-25 09:59:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 09:59:09,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:09,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:09,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:59:09,030 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:09,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1799591387, now seen corresponding path program 3 times [2020-09-25 09:59:09,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:09,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256115922] [2020-09-25 09:59:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:10,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:10,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:59:10,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1838 [2020-09-25 09:59:10,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:10,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:59:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:59:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:10,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:59:10,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:10,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:10,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:10,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:59:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 09:59:12,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-09-25 09:59:12,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:12,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:59:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:12,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:59:12,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 09:59:12,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:59:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:59:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:59:12,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:59:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:59:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:59:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:12,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:59:12,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256115922] [2020-09-25 09:59:12,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:12,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:59:12,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620104076] [2020-09-25 09:59:12,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:59:12,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:12,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:59:12,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:59:12,653 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand 15 states. [2020-09-25 09:59:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:13,129 INFO L93 Difference]: Finished difference Result 87 states and 122 transitions. [2020-09-25 09:59:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 09:59:13,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-09-25 09:59:13,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:13,132 INFO L225 Difference]: With dead ends: 87 [2020-09-25 09:59:13,132 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 09:59:13,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-09-25 09:59:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 09:59:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2020-09-25 09:59:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 09:59:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2020-09-25 09:59:13,160 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 54 [2020-09-25 09:59:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:13,164 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2020-09-25 09:59:13,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:59:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2020-09-25 09:59:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 09:59:13,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:13,165 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:13,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:59:13,168 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1288436502, now seen corresponding path program 3 times [2020-09-25 09:59:13,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:13,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276789515] [2020-09-25 09:59:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:14,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:14,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 09:59:14,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:59:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-09-25 09:59:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:14,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 09:59:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:59:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:59:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:14,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:14,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:14,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:14,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:14,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:14,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:14,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:59:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:59:16,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:59:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1567 [2020-09-25 09:59:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 09:59:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:59:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:16,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:16,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 09:59:16,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 09:59:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:59:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:59:16,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:16,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:59:16,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:16,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:16,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:16,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:59:16,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:16,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 09:59:16,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276789515] [2020-09-25 09:59:16,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:16,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:59:16,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189070636] [2020-09-25 09:59:16,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:59:16,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:16,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:59:16,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:59:16,969 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 15 states. [2020-09-25 09:59:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:17,425 INFO L93 Difference]: Finished difference Result 99 states and 163 transitions. [2020-09-25 09:59:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:59:17,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-09-25 09:59:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:17,431 INFO L225 Difference]: With dead ends: 99 [2020-09-25 09:59:17,431 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 09:59:17,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-09-25 09:59:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 09:59:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-09-25 09:59:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 09:59:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 129 transitions. [2020-09-25 09:59:17,464 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 129 transitions. Word has length 53 [2020-09-25 09:59:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:17,464 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 129 transitions. [2020-09-25 09:59:17,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:59:17,465 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 129 transitions. [2020-09-25 09:59:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 09:59:17,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:17,467 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:17,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:59:17,468 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:17,468 INFO L82 PathProgramCache]: Analyzing trace with hash -494889179, now seen corresponding path program 4 times [2020-09-25 09:59:17,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:17,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4647430] [2020-09-25 09:59:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:17,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:20,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:59:20,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2564 [2020-09-25 09:59:20,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:20,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 09:59:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:59:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:59:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:20,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:20,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:20,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:20,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:59:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:22,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 09:59:22,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:22,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1974 [2020-09-25 09:59:22,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:22,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 09:59:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:59:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:22,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:22,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:22,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 09:59:22,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:22,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:59:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:59:22,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:59:22,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:22,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:22,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:22,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:59:22,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:22,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:22,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:22,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:59:22,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:22,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:22,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:22,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:59:22,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4647430] [2020-09-25 09:59:22,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:22,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 09:59:22,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566778860] [2020-09-25 09:59:22,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 09:59:22,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:22,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 09:59:22,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:59:22,475 INFO L87 Difference]: Start difference. First operand 81 states and 129 transitions. Second operand 16 states. [2020-09-25 09:59:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:22,910 INFO L93 Difference]: Finished difference Result 161 states and 278 transitions. [2020-09-25 09:59:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:59:22,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-09-25 09:59:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:22,916 INFO L225 Difference]: With dead ends: 161 [2020-09-25 09:59:22,917 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 09:59:22,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-09-25 09:59:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 09:59:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-09-25 09:59:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 09:59:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 132 transitions. [2020-09-25 09:59:22,944 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 132 transitions. Word has length 54 [2020-09-25 09:59:22,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:22,945 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 132 transitions. [2020-09-25 09:59:22,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 09:59:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 132 transitions. [2020-09-25 09:59:22,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 09:59:22,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:22,949 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:22,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 09:59:22,949 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:22,950 INFO L82 PathProgramCache]: Analyzing trace with hash 847598467, now seen corresponding path program 5 times [2020-09-25 09:59:22,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:22,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670136933] [2020-09-25 09:59:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:23,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:25,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 09:59:25,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2864 [2020-09-25 09:59:25,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:25,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:59:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:59:25,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:59:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:26,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:27,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 09:59:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-09-25 09:59:27,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:27,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:59:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:59:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:28,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:59:28,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 09:59:28,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:59:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:59:28,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:28,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:28,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:59:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:28,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:28,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:59:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:28,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:28,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:59:28,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:28,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:59:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 09:59:28,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670136933] [2020-09-25 09:59:28,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:28,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 09:59:28,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840174806] [2020-09-25 09:59:28,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 09:59:28,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:28,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 09:59:28,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:59:28,256 INFO L87 Difference]: Start difference. First operand 83 states and 132 transitions. Second operand 16 states. [2020-09-25 09:59:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:28,878 INFO L93 Difference]: Finished difference Result 123 states and 212 transitions. [2020-09-25 09:59:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 09:59:28,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-09-25 09:59:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:28,881 INFO L225 Difference]: With dead ends: 123 [2020-09-25 09:59:28,881 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 09:59:28,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 09:59:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 09:59:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 99. [2020-09-25 09:59:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-25 09:59:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 180 transitions. [2020-09-25 09:59:28,897 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 180 transitions. Word has length 54 [2020-09-25 09:59:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:28,897 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 180 transitions. [2020-09-25 09:59:28,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 09:59:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 180 transitions. [2020-09-25 09:59:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 09:59:28,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:28,899 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:28,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 09:59:28,900 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 6 times [2020-09-25 09:59:28,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:28,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890008530] [2020-09-25 09:59:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 09:59:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4052 [2020-09-25 09:59:32,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:32,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:59:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:59:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 09:59:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 09:59:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking...