/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:31:59,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:31:59,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:31:59,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:31:59,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:31:59,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:31:59,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:31:59,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:31:59,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:31:59,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:31:59,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:31:59,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:31:59,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:31:59,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:31:59,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:31:59,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:31:59,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:31:59,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:31:59,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:31:59,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:31:59,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:31:59,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:31:59,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:31:59,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:31:59,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:31:59,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:31:59,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:31:59,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:31:59,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:31:59,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:31:59,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:31:59,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:31:59,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:31:59,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:31:59,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:31:59,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:31:59,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:31:59,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:31:59,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:31:59,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:31:59,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:31:59,260 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 [2020-09-24 21:31:59,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:31:59,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:31:59,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:31:59,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:31:59,313 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:31:59,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:31:59,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:31:59,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:31:59,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:31:59,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:31:59,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:31:59,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:31:59,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:31:59,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:31:59,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:31:59,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:31:59,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:31:59,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:31:59,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:31:59,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:31:59,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:31:59,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:31:59,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:31:59,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:31:59,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:31:59,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:31:59,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:31:59,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:31:59,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:31:59,320 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:31:59,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:31:59,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:31:59,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:31:59,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:31:59,784 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:31:59,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 21:31:59,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dfc6ec39/50ca8100c9f24a0097c17b84093b9dd4/FLAG7cb188dc8 [2020-09-24 21:32:00,403 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:32:00,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-2.c [2020-09-24 21:32:00,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dfc6ec39/50ca8100c9f24a0097c17b84093b9dd4/FLAG7cb188dc8 [2020-09-24 21:32:00,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dfc6ec39/50ca8100c9f24a0097c17b84093b9dd4 [2020-09-24 21:32:00,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:32:00,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:32:00,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:00,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:32:00,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:32:00,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:00" (1/1) ... [2020-09-24 21:32:00,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:00, skipping insertion in model container [2020-09-24 21:32:00,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:00" (1/1) ... [2020-09-24 21:32:00,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:32:00,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:32:01,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:01,023 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:32:01,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:01,056 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:32:01,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01 WrapperNode [2020-09-24 21:32:01,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:01,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:32:01,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:32:01,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:32:01,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (1/1) ... [2020-09-24 21:32:01,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (1/1) ... [2020-09-24 21:32:01,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (1/1) ... [2020-09-24 21:32:01,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (1/1) ... [2020-09-24 21:32:01,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (1/1) ... [2020-09-24 21:32:01,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (1/1) ... [2020-09-24 21:32:01,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (1/1) ... [2020-09-24 21:32:01,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:32:01,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:32:01,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:32:01,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:32:01,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (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 [2020-09-24 21:32:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:32:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:32:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:32:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:32:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:32:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:32:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:32:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:32:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:32:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:32:01,459 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:32:01,459 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:32:01,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:01 BoogieIcfgContainer [2020-09-24 21:32:01,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:32:01,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:32:01,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:32:01,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:32:01,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:32:00" (1/3) ... [2020-09-24 21:32:01,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee1f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:01, skipping insertion in model container [2020-09-24 21:32:01,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:01" (2/3) ... [2020-09-24 21:32:01,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee1f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:01, skipping insertion in model container [2020-09-24 21:32:01,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:01" (3/3) ... [2020-09-24 21:32:01,498 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2020-09-24 21:32:01,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:32:01,549 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:32:01,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:32:01,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:32:01,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:32:01,609 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:32:01,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:32:01,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:32:01,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:32:01,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:32:01,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:32:01,629 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:32:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:32:01,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:01,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:01,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:32:01,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:01,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79177134] [2020-09-24 21:32:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:01,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:01,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:32:01,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:01,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:32:01,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:32:01,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:32:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:01,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:01,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:01,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:01,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:01,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:01,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:01,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:01,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:01,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:01,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:01,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:32:01,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:01,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:01,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79177134] [2020-09-24 21:32:01,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:01,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:01,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758137667] [2020-09-24 21:32:01,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:01,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:02,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:02,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:02,017 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:32:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:02,133 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:32:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:02,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:32:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:02,148 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:02,149 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:32:02,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:32:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:32:02,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:02,203 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:32:02,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:02,204 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:02,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:02,204 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:32:02,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:02,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:02,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:32:02,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:02,208 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:32:02,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:02,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002955752] [2020-09-24 21:32:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:32:02,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:02,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 21:32:02,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:02,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:02,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:02,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:02,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 21:32:02,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:02,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002955752] [2020-09-24 21:32:02,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:02,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:02,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523124647] [2020-09-24 21:32:02,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:02,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:02,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:02,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:02,471 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:32:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:02,548 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:32:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:02,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:32:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:02,551 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:32:02,551 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:32:02,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:32:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:32:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:02,561 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:32:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:02,562 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:02,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:32:02,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:02,564 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] [2020-09-24 21:32:02,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:32:02,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:02,565 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:32:02,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:02,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352541664] [2020-09-24 21:32:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:32:03,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-24 21:32:03,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:32:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:03,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:03,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:03,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:03,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 21:32:03,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:03,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:32:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:03,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:03,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:03,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:03,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:32:03,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:03,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:03,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352541664] [2020-09-24 21:32:03,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:03,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:03,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650555884] [2020-09-24 21:32:03,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:03,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:03,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:03,466 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:32:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:03,632 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:32:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:03,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:32:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:03,636 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:03,636 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:32:03,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:03,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:32:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:32:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:32:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:32:03,666 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:32:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:03,669 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:32:03,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:32:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:32:03,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:03,673 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 21:32:03,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:32:03,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:03,674 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:32:03,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:03,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199877671] [2020-09-24 21:32:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:32:04,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-09-24 21:32:04,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:04,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:04,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:32:04,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:04,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:04,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:04,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:04,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-24 21:32:04,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:04,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:32:04,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:04,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:32:04,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:05,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199877671] [2020-09-24 21:32:05,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:05,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:05,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970446238] [2020-09-24 21:32:05,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:05,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:05,005 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 21:32:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:05,135 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-24 21:32:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:05,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 21:32:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:05,139 INFO L225 Difference]: With dead ends: 88 [2020-09-24 21:32:05,139 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 21:32:05,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 21:32:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-24 21:32:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:32:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-24 21:32:05,156 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-24 21:32:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:05,157 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-24 21:32:05,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-24 21:32:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:32:05,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:05,161 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] [2020-09-24 21:32:05,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:32:05,161 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:32:05,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:05,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569517981] [2020-09-24 21:32:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:32:10,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:10,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:32:14,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4072 [2020-09-24 21:32:14,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:14,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:14,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:14,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:14,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 21:32:14,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:14,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:14,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:14,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:14,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:14,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:14,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:14,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:14,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:14,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:14,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:14,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:14,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 21:32:14,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569517981] [2020-09-24 21:32:14,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:14,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:32:14,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459034298] [2020-09-24 21:32:14,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:32:14,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:32:14,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:32:14,664 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 8 states. [2020-09-24 21:32:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:14,926 INFO L93 Difference]: Finished difference Result 94 states and 148 transitions. [2020-09-24 21:32:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:32:14,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 21:32:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:14,932 INFO L225 Difference]: With dead ends: 94 [2020-09-24 21:32:14,932 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 21:32:14,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:14,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 21:32:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-09-24 21:32:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 21:32:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 132 transitions. [2020-09-24 21:32:14,955 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 132 transitions. Word has length 51 [2020-09-24 21:32:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:14,956 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 132 transitions. [2020-09-24 21:32:14,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:32:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 132 transitions. [2020-09-24 21:32:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 21:32:14,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:14,962 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:14,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:32:14,962 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 2 times [2020-09-24 21:32:14,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:14,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350038458] [2020-09-24 21:32:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 21:32:19,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:32:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:32:19,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:20,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:20,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:25,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 21:32:25,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 21:32:25,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:32:25,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:32:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:32:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:32:25,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:25,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:25,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-24 21:32:25,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:25,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:25,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:25,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:25,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:32:25,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:25,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:25,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:25,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:25,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:25,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:26,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:32:26,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-09-24 21:32:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:26,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:26,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:26,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:26,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:26,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:26,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:32:26,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:26,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:26,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:26,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 54 proven. 77 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 21:32:26,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350038458] [2020-09-24 21:32:26,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:26,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:32:26,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394707971] [2020-09-24 21:32:26,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:32:26,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:26,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:32:26,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:32:26,751 INFO L87 Difference]: Start difference. First operand 82 states and 132 transitions. Second operand 14 states. [2020-09-24 21:32:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:26,924 INFO L93 Difference]: Finished difference Result 157 states and 269 transitions. [2020-09-24 21:32:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:32:26,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-24 21:32:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:26,928 INFO L225 Difference]: With dead ends: 157 [2020-09-24 21:32:26,928 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 21:32:26,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:32:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 21:32:26,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-09-24 21:32:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 21:32:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2020-09-24 21:32:26,943 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 87 [2020-09-24 21:32:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:26,943 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2020-09-24 21:32:26,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:32:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2020-09-24 21:32:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:32:26,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:26,950 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:26,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:26,951 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:26,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:26,951 INFO L82 PathProgramCache]: Analyzing trace with hash -527666429, now seen corresponding path program 3 times [2020-09-24 21:32:26,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:26,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571870981] [2020-09-24 21:32:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:31,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:32:31,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:32:31,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:31,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:31,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:31,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:31,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:32,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:32,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:32,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:37,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:32:37,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:32:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:32:37,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:32:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:32:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:32:37,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:37,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:38,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:38,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:32:38,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-24 21:32:38,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:38,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:32:38,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:38,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:38,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:32:38,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:38,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:38,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:38,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:32:38,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:38,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:38,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:38,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:38,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:38,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:38,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:38,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:38,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 21:32:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:42,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 21:32:42,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:32:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4096 [2020-09-24 21:32:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:32:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:42,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:42,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:32:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-09-24 21:32:42,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:42,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:42,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:32:42,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:42,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:42,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:42,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:42,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 21:32:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:43,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:43,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:43,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:43,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:43,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:43,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:43,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 21:32:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:43,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:43,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:43,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:43,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 177 proven. 132 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-09-24 21:32:43,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571870981] [2020-09-24 21:32:43,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:43,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:32:43,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44919769] [2020-09-24 21:32:43,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:32:43,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:43,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:32:43,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:43,175 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand 12 states. [2020-09-24 21:32:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:43,490 INFO L93 Difference]: Finished difference Result 131 states and 198 transitions. [2020-09-24 21:32:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:32:43,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-09-24 21:32:43,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:43,492 INFO L225 Difference]: With dead ends: 131 [2020-09-24 21:32:43,492 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 21:32:43,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:32:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 21:32:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-24 21:32:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 21:32:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-09-24 21:32:43,514 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 123 [2020-09-24 21:32:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:43,514 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-09-24 21:32:43,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:32:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-09-24 21:32:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 21:32:43,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:43,521 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:43,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:32:43,521 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:43,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1885389560, now seen corresponding path program 4 times [2020-09-24 21:32:43,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:43,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361379644] [2020-09-24 21:32:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 21:32:48,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:32:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:32:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:48,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:48,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:48,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking...