/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_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:33:10,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:33:10,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:33:10,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:33:10,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:33:10,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:33:10,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:33:10,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:33:10,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:33:10,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:33:10,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:33:10,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:33:10,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:33:10,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:33:10,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:33:10,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:33:10,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:33:10,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:33:10,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:33:10,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:33:10,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:33:10,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:33:10,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:33:10,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:33:10,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:33:10,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:33:10,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:33:10,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:33:10,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:33:10,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:33:10,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:33:10,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:33:10,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:33:10,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:33:10,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:33:10,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:33:10,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:33:10,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:33:10,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:33:10,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:33:10,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:33:10,219 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 21:33:10,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:33:10,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:33:10,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:33:10,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:33:10,272 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:33:10,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:33:10,273 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:33:10,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:33:10,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:33:10,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:33:10,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:33:10,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:33:10,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:33:10,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:33:10,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:33:10,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:33:10,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:33:10,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:33:10,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:33:10,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:33:10,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:33:10,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:33:10,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:33:10,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:33:10,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:33:10,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:33:10,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:33:10,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:33:10,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:33:10,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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 21:33:10,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:33:10,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:33:10,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:33:10,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:33:10,751 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:33:10,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 21:33:10,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5823ea8/bf19fd20b1cb4b4681ac1a3a80483ce0/FLAGdbf879aa7 [2020-09-24 21:33:11,400 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:33:11,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 21:33:11,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5823ea8/bf19fd20b1cb4b4681ac1a3a80483ce0/FLAGdbf879aa7 [2020-09-24 21:33:11,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc5823ea8/bf19fd20b1cb4b4681ac1a3a80483ce0 [2020-09-24 21:33:11,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:33:11,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:33:11,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:11,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:33:11,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:33:11,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:11" (1/1) ... [2020-09-24 21:33:11,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:11, skipping insertion in model container [2020-09-24 21:33:11,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:11" (1/1) ... [2020-09-24 21:33:11,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:33:11,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:33:12,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:12,034 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:33:12,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:12,065 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:33:12,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12 WrapperNode [2020-09-24 21:33:12,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:12,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:33:12,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:33:12,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:33:12,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (1/1) ... [2020-09-24 21:33:12,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (1/1) ... [2020-09-24 21:33:12,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (1/1) ... [2020-09-24 21:33:12,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (1/1) ... [2020-09-24 21:33:12,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (1/1) ... [2020-09-24 21:33:12,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (1/1) ... [2020-09-24 21:33:12,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (1/1) ... [2020-09-24 21:33:12,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:33:12,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:33:12,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:33:12,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:33:12,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (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 21:33:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:33:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:33:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:33:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:33:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:33:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:33:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:33:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:33:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:33:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:33:12,485 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:33:12,485 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:33:12,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:12 BoogieIcfgContainer [2020-09-24 21:33:12,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:33:12,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:33:12,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:33:12,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:33:12,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:33:11" (1/3) ... [2020-09-24 21:33:12,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:33:12, skipping insertion in model container [2020-09-24 21:33:12,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:12" (2/3) ... [2020-09-24 21:33:12,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:33:12, skipping insertion in model container [2020-09-24 21:33:12,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:12" (3/3) ... [2020-09-24 21:33:12,506 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-24 21:33:12,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:33:12,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:33:12,562 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:33:12,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:33:12,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:33:12,597 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:33:12,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:33:12,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:33:12,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:33:12,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:33:12,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:33:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:33:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:33:12,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:12,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:12,635 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:12,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:33:12,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:12,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159804191] [2020-09-24 21:33:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:12,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:33:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 21:33:12,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:33:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:33:12,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:12,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:12,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:12,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:12,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:12,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:12,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:12,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:12,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:33:12,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:12,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:12,981 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 21:33:12,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159804191] [2020-09-24 21:33:12,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:33:12,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:33:12,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883796461] [2020-09-24 21:33:12,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:33:12,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:13,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:33:13,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:33:13,014 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:33:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:13,142 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:33:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:33:13,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:33:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:13,157 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:33:13,157 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:33:13,161 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 21:33:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:33:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:33:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:33:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:33:13,220 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:33:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:13,221 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:33:13,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:33:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:33:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:33:13,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:13,224 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 21:33:13,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:33:13,224 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:13,225 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:33:13,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:13,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561072311] [2020-09-24 21:33:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:13,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:33:13,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-24 21:33:13,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:33:13,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:13,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 21:33:13,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:13,531 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 21:33:13,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561072311] [2020-09-24 21:33:13,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:33:13,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:33:13,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113673320] [2020-09-24 21:33:13,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:33:13,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:13,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:33:13,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:33:13,535 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:33:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:13,613 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:33:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:33:13,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:33:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:13,615 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:33:13,615 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:33:13,616 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 21:33:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:33:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:33:13,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:33:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:33:13,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:33:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:13,626 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:33:13,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:33:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:33:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:33:13,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:13,631 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 21:33:13,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:33:13,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:13,632 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:33:13,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:13,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950237946] [2020-09-24 21:33:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:13,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:14,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:33:14,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-09-24 21:33:14,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:33:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:14,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:14,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:14,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:14,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:14,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:14,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-24 21:33:14,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:33:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:14,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:14,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:14,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:14,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:14,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:33:14,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:14,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:14,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:14,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:14,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:14,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:33:14,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:33:14,721 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 21:33:14,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950237946] [2020-09-24 21:33:14,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:14,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:33:14,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256677814] [2020-09-24 21:33:14,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:33:14,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:14,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:33:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:33:14,734 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:33:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:14,958 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:33:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:33:14,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:33:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:14,965 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:33:14,965 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:33:14,966 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 21:33:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:33:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:33:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:33:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:33:14,991 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:33:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:14,993 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:33:14,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:33:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:33:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:33:15,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:15,002 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 21:33:15,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:33:15,003 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:15,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:15,003 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:33:15,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:15,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227192970] [2020-09-24 21:33:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:15,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:33:15,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-24 21:33:15,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:33:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:15,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:15,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:15,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:15,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:16,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:33:16,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-09-24 21:33:16,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:16,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:16,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:16,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:33:16,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:16,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:16,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:16,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:33:16,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:33:16,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:16,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:33:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:16,217 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 21:33:16,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227192970] [2020-09-24 21:33:16,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:16,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:33:16,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485808519] [2020-09-24 21:33:16,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:33:16,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:33:16,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:33:16,220 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 21:33:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:16,372 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-24 21:33:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:33:16,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 21:33:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:16,376 INFO L225 Difference]: With dead ends: 88 [2020-09-24 21:33:16,376 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 21:33:16,378 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 21:33:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 21:33:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-24 21:33:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:33:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-24 21:33:16,394 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-24 21:33:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:16,395 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-24 21:33:16,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:33:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-24 21:33:16,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:33:16,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:16,399 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 21:33:16,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:33:16,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:16,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:16,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:33:16,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:16,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512713996] [2020-09-24 21:33:16,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:21,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:33:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:33:21,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:33:21,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:33:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:21,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:21,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:21,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:25,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:33:25,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:33:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3870 [2020-09-24 21:33:25,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:25,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:33:25,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:25,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:25,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:25,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 21:33:25,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:25,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:33:25,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:33:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:25,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:33:25,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:25,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:25,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:25,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:33:25,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:25,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:33:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:25,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:25,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:25,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:33:25,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:25,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 21:33:25,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512713996] [2020-09-24 21:33:25,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:25,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:33:25,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094368402] [2020-09-24 21:33:25,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:33:25,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:25,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:33:25,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:33:25,698 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 8 states. [2020-09-24 21:33:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:25,841 INFO L93 Difference]: Finished difference Result 128 states and 198 transitions. [2020-09-24 21:33:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:33:25,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 21:33:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:25,850 INFO L225 Difference]: With dead ends: 128 [2020-09-24 21:33:25,852 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 21:33:25,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:33:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 21:33:25,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-09-24 21:33:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 21:33:25,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2020-09-24 21:33:25,890 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 51 [2020-09-24 21:33:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:25,891 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2020-09-24 21:33:25,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:33:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2020-09-24 21:33:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 21:33:25,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:25,902 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 21:33:25,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:33:25,902 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 2 times [2020-09-24 21:33:25,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:25,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049991589] [2020-09-24 21:33:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:25,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:30,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:30,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 21:33:30,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:33:30,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:33:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:33:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:30,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:30,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:30,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:30,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:30,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:30,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:30,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:30,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:30,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:30,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:31,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:35,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:35,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 21:33:35,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:33:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:33:35,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:33:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:33:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:33:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:36,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:33:36,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-09-24 21:33:36,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:36,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:33:36,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:36,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:36,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:36,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:33:36,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:36,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:36,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:33:36,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:33:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:37,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:33:37,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:33:37,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-09-24 21:33:37,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:37,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:33:37,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:37,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:37,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:33:37,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:37,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:33:37,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:37,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:33:37,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:33:37,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:33:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:37,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:37,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:37,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:37,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:37,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:37,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:37,909 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 21:33:37,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049991589] [2020-09-24 21:33:37,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:37,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:33:37,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328165025] [2020-09-24 21:33:37,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:33:37,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:37,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:33:37,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:33:37,912 INFO L87 Difference]: Start difference. First operand 76 states and 105 transitions. Second operand 14 states. [2020-09-24 21:33:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:38,150 INFO L93 Difference]: Finished difference Result 154 states and 244 transitions. [2020-09-24 21:33:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:33:38,150 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-24 21:33:38,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:38,153 INFO L225 Difference]: With dead ends: 154 [2020-09-24 21:33:38,153 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 21:33:38,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:33:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 21:33:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-09-24 21:33:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 21:33:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2020-09-24 21:33:38,166 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 87 [2020-09-24 21:33:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:38,167 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2020-09-24 21:33:38,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:33:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2020-09-24 21:33:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:33:38,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:38,169 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 21:33:38,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:33:38,170 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:38,170 INFO L82 PathProgramCache]: Analyzing trace with hash -527666429, now seen corresponding path program 3 times [2020-09-24 21:33:38,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:38,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129273173] [2020-09-24 21:33:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:38,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:38,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:33:43,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:33:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:33:43,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:33:43,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:43,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:43,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:43,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:43,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:33:43,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:43,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:33:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:33:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:33:48,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:33:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:33:48,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:33:48,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:33:49,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:33:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-09-24 21:33:49,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:33:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:49,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:33:49,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:49,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:33:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:33:49,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:33:49,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:33:49,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:49,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:49,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:49,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 21:33:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:52,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 21:33:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:33:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3753 [2020-09-24 21:33:52,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:33:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:33:54,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:33:54,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 996 [2020-09-24 21:33:54,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:33:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:33:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:54,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:33:54,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:33:54,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-24 21:33:54,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:33:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:33:54,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:54,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:33:54,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:54,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 21:33:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:54,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:33:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 171 proven. 138 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-09-24 21:33:54,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129273173] [2020-09-24 21:33:54,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:54,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:33:54,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802926423] [2020-09-24 21:33:54,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:33:54,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:54,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:33:54,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:33:54,388 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand 12 states. [2020-09-24 21:33:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:54,693 INFO L93 Difference]: Finished difference Result 131 states and 198 transitions. [2020-09-24 21:33:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:33:54,694 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-09-24 21:33:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:54,695 INFO L225 Difference]: With dead ends: 131 [2020-09-24 21:33:54,696 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 21:33:54,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:33:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 21:33:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-24 21:33:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 21:33:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-09-24 21:33:54,707 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 123 [2020-09-24 21:33:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:54,707 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-09-24 21:33:54,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:33:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-09-24 21:33:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 21:33:54,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:54,709 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 21:33:54,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:33:54,709 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:54,710 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 4 times [2020-09-24 21:33:54,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:54,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141648879] [2020-09-24 21:33:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:59,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 21:33:59,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:33:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:33:59,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:33:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:33:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:59,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:59,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:59,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:59,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:04,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 21:34:04,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:34:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:34:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:34:04,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 21:34:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:34:06,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:34:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-09-24 21:34:06,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:34:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:06,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 21:34:06,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:34:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:34:06,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:34:06,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:06,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:34:06,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:34:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:06,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:34:06,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:34:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:34:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:34:06,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:34:06,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:34:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 21:34:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:06,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:34:06,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:34:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:34:06,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:34:06,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:34:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:06,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:34:06,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:06,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 22 proven. 111 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 21:34:06,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141648879] [2020-09-24 21:34:06,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:06,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:34:06,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229311306] [2020-09-24 21:34:06,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:34:06,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:06,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:34:06,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:34:06,668 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 9 states. [2020-09-24 21:34:06,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:06,835 INFO L93 Difference]: Finished difference Result 120 states and 156 transitions. [2020-09-24 21:34:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:34:06,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 21:34:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:06,837 INFO L225 Difference]: With dead ends: 120 [2020-09-24 21:34:06,837 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 21:34:06,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:34:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 21:34:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-24 21:34:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 21:34:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-09-24 21:34:06,858 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 87 [2020-09-24 21:34:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:06,859 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-09-24 21:34:06,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:34:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-09-24 21:34:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 21:34:06,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:06,861 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:06,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:34:06,861 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:06,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:06,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1001388386, now seen corresponding path program 5 times [2020-09-24 21:34:06,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:06,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640798928] [2020-09-24 21:34:06,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking...