/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=WIDEST --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/id2_i5_o5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:11:16,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:11:16,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:11:16,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:11:16,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:11:16,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:11:16,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:11:16,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:11:16,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:11:16,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:11:16,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:11:16,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:11:16,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:11:16,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:11:16,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:11:16,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:11:16,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:11:16,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:11:16,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:11:16,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:11:16,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:11:16,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:11:16,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:11:16,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:11:16,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:11:16,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:11:16,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:11:16,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:11:16,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:11:16,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:11:16,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:11:16,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:11:16,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:11:16,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:11:16,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:11:16,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:11:16,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:11:16,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:11:16,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:11:16,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:11:16,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:11:16,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:11:16,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:11:16,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:11:16,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:11:16,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:11:16,357 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:11:16,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:11:16,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:11:16,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:11:16,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:11:16,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:11:16,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:11:16,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:11:16,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:11:16,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:11:16,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:11:16,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:11:16,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:11:16,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:11:16,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:11:16,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:11:16,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:11:16,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:11:16,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:11:16,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:11:16,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:11:16,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:11:16,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:11:16,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:11:16,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:11:16,365 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:11:16,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:11:16,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:11:16,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:11:16,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:11:16,857 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:11:16,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-1.c [2020-09-25 03:11:16,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4738aa319/de7bf46ddbc44d638c391271d7c3fe1b/FLAGfb5909c31 [2020-09-25 03:11:17,486 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:11:17,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-1.c [2020-09-25 03:11:17,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4738aa319/de7bf46ddbc44d638c391271d7c3fe1b/FLAGfb5909c31 [2020-09-25 03:11:17,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4738aa319/de7bf46ddbc44d638c391271d7c3fe1b [2020-09-25 03:11:17,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:11:17,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:11:17,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:11:17,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:11:17,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:11:17,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:11:17" (1/1) ... [2020-09-25 03:11:17,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aed4350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:17, skipping insertion in model container [2020-09-25 03:11:17,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:11:17" (1/1) ... [2020-09-25 03:11:17,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:11:17,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:11:18,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:11:18,154 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:11:18,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:11:18,194 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:11:18,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18 WrapperNode [2020-09-25 03:11:18,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:11:18,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:11:18,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:11:18,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:11:18,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... [2020-09-25 03:11:18,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... [2020-09-25 03:11:18,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... [2020-09-25 03:11:18,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... [2020-09-25 03:11:18,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... [2020-09-25 03:11:18,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... [2020-09-25 03:11:18,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... [2020-09-25 03:11:18,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:11:18,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:11:18,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:11:18,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:11:18,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:11:18,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:11:18,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:11:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 03:11:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-25 03:11:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:11:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:11:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:11:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 03:11:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-25 03:11:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:11:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:11:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:11:18,629 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:11:18,630 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:11:18,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:11:18 BoogieIcfgContainer [2020-09-25 03:11:18,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:11:18,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:11:18,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:11:18,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:11:18,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:11:17" (1/3) ... [2020-09-25 03:11:18,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131f4d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:11:18, skipping insertion in model container [2020-09-25 03:11:18,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:18" (2/3) ... [2020-09-25 03:11:18,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131f4d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:11:18, skipping insertion in model container [2020-09-25 03:11:18,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:11:18" (3/3) ... [2020-09-25 03:11:18,644 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-1.c [2020-09-25 03:11:18,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:11:18,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:11:18,685 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:11:18,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:11:18,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:11:18,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:11:18,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:11:18,713 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:11:18,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:11:18,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:11:18,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:11:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 03:11:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:11:18,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:18,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:18,744 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:18,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:18,751 INFO L82 PathProgramCache]: Analyzing trace with hash -588914908, now seen corresponding path program 1 times [2020-09-25 03:11:18,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:18,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626401639] [2020-09-25 03:11:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:19,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:11:19,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:19,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 03:11:19,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:11:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 03:11:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:19,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:19,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:19,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:19,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:19,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:19,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:19,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:19,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:19,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:19,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:19,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:19,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:11:19,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626401639] [2020-09-25 03:11:19,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:11:19,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:11:19,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106960293] [2020-09-25 03:11:19,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:11:19,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:11:19,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:11:19,347 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-09-25 03:11:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:19,470 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-09-25 03:11:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:11:19,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:11:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:19,486 INFO L225 Difference]: With dead ends: 46 [2020-09-25 03:11:19,487 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 03:11:19,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:11:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 03:11:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-25 03:11:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 03:11:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-25 03:11:19,549 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 16 [2020-09-25 03:11:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:19,549 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-25 03:11:19,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:11:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-25 03:11:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 03:11:19,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:19,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:19,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:11:19,553 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:19,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1852809946, now seen corresponding path program 1 times [2020-09-25 03:11:19,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:19,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464183868] [2020-09-25 03:11:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:20,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:11:20,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 03:11:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:11:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:11:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:20,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:20,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:11:20,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:11:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 03:11:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:11:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:20,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:20,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:20,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:11:20,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:11:20,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464183868] [2020-09-25 03:11:20,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:11:20,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:11:20,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414344649] [2020-09-25 03:11:20,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:11:20,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:20,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:11:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:11:20,172 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2020-09-25 03:11:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:20,275 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-09-25 03:11:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:11:20,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 03:11:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:20,278 INFO L225 Difference]: With dead ends: 45 [2020-09-25 03:11:20,278 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 03:11:20,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:11:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 03:11:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 03:11:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 03:11:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-25 03:11:20,300 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2020-09-25 03:11:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:20,300 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-25 03:11:20,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:11:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-25 03:11:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 03:11:20,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:20,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:20,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:11:20,305 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash -238705980, now seen corresponding path program 1 times [2020-09-25 03:11:20,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:20,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668350938] [2020-09-25 03:11:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:20,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:20,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:11:20,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:20,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-25 03:11:20,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:20,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 03:11:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:11:20,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:20,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:20,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:11:20,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:21,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:11:21,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:21,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 03:11:21,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:21,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:11:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:21,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:11:21,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 03:11:21,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:21,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:21,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:11:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:21,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:21,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:11:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:11:21,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668350938] [2020-09-25 03:11:21,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:21,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:11:21,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523353158] [2020-09-25 03:11:21,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:11:21,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:11:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:11:21,261 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 9 states. [2020-09-25 03:11:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:21,387 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-09-25 03:11:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:11:21,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 03:11:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:21,390 INFO L225 Difference]: With dead ends: 55 [2020-09-25 03:11:21,390 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 03:11:21,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:11:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 03:11:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2020-09-25 03:11:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:11:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-25 03:11:21,400 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2020-09-25 03:11:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:21,401 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-25 03:11:21,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:11:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-25 03:11:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 03:11:21,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:21,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:21,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:11:21,404 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:21,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:21,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2006293766, now seen corresponding path program 1 times [2020-09-25 03:11:21,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:21,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809036365] [2020-09-25 03:11:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:11:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-09-25 03:11:22,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 03:11:22,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:11:22,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:22,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:22,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:22,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:22,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 03:11:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 03:11:22,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:11:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:11:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:22,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:11:22,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 03:11:22,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:22,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:22,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:11:22,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:11:22,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 03:11:22,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:11:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:22,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:22,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:22,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:22,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:11:22,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:22,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:22,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 03:11:22,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809036365] [2020-09-25 03:11:22,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:22,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:11:22,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902934611] [2020-09-25 03:11:22,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:11:22,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:22,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:11:22,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:11:22,812 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2020-09-25 03:11:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:22,949 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-09-25 03:11:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:11:22,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 03:11:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:22,952 INFO L225 Difference]: With dead ends: 65 [2020-09-25 03:11:22,952 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 03:11:22,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:11:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 03:11:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-09-25 03:11:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 03:11:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-25 03:11:22,963 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 40 [2020-09-25 03:11:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:22,964 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-25 03:11:22,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:11:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-25 03:11:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:11:22,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:22,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:22,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:11:22,967 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:22,967 INFO L82 PathProgramCache]: Analyzing trace with hash 940355172, now seen corresponding path program 2 times [2020-09-25 03:11:22,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:22,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402934743] [2020-09-25 03:11:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 03:11:24,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-09-25 03:11:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 03:11:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:11:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:24,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:11:24,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 03:11:24,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 03:11:24,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:11:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 03:11:24,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 03:11:24,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:11:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:11:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:11:24,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 03:11:24,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:11:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:11:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 03:11:24,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:11:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:24,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:24,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:11:24,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:11:25,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402934743] [2020-09-25 03:11:25,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:25,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:11:25,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407788211] [2020-09-25 03:11:25,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:11:25,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:25,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:11:25,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:11:25,011 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 13 states. [2020-09-25 03:11:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:25,161 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-09-25 03:11:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:11:25,162 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 03:11:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:25,164 INFO L225 Difference]: With dead ends: 75 [2020-09-25 03:11:25,164 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 03:11:25,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:11:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 03:11:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-09-25 03:11:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:11:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-09-25 03:11:25,173 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 48 [2020-09-25 03:11:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:25,174 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-09-25 03:11:25,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:11:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-09-25 03:11:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 03:11:25,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:25,177 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:25,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:11:25,177 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:25,178 INFO L82 PathProgramCache]: Analyzing trace with hash 826985242, now seen corresponding path program 2 times [2020-09-25 03:11:25,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:25,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173133950] [2020-09-25 03:11:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:11:25,191 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:11:25,191 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:11:25,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:11:25,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:11:25 BoogieIcfgContainer [2020-09-25 03:11:25,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:11:25,225 INFO L168 Benchmark]: Toolchain (without parser) took 7335.08 ms. Allocated memory was 142.6 MB in the beginning and 270.0 MB in the end (delta: 127.4 MB). Free memory was 102.9 MB in the beginning and 134.3 MB in the end (delta: -31.4 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:25,226 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:11:25,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.05 ms. Allocated memory is still 142.6 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:25,228 INFO L168 Benchmark]: Boogie Preprocessor took 130.44 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 92.9 MB in the beginning and 182.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:25,229 INFO L168 Benchmark]: RCFGBuilder took 308.84 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 169.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:25,230 INFO L168 Benchmark]: TraceAbstraction took 6585.32 ms. Allocated memory was 203.4 MB in the beginning and 270.0 MB in the end (delta: 66.6 MB). Free memory was 168.9 MB in the beginning and 134.3 MB in the end (delta: 34.6 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:25,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.05 ms. Allocated memory is still 142.6 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.44 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 92.9 MB in the beginning and 182.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.84 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 169.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6585.32 ms. Allocated memory was 203.4 MB in the beginning and 270.0 MB in the end (delta: 66.6 MB). Free memory was 168.9 MB in the beginning and 134.3 MB in the end (delta: 34.6 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 21]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int input = 5; [L19] CALL, EXPR id(input) [L8] COND FALSE !(x==0) [L9] CALL, EXPR id2(x-1) [L13] COND FALSE !(x==0) [L14] CALL, EXPR id(x-1) [L8] COND FALSE !(x==0) [L9] CALL, EXPR id2(x-1) [L13] COND FALSE !(x==0) [L14] CALL, EXPR id(x-1) [L8] COND FALSE !(x==0) [L9] CALL, EXPR id2(x-1) [L13] COND TRUE x==0 [L13] return 0; [L9] RET, EXPR id2(x-1) [L9] return id2(x-1) + 1; [L14] RET, EXPR id(x-1) [L14] return id(x-1) + 1; [L9] RET, EXPR id2(x-1) [L9] return id2(x-1) + 1; [L14] RET, EXPR id(x-1) [L14] return id(x-1) + 1; [L9] RET, EXPR id2(x-1) [L9] return id2(x-1) + 1; [L19] RET, EXPR id(input) [L19] int result = id(input); [L20] COND TRUE result == 5 [L21] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 143 SDtfs, 19 SDslu, 852 SDs, 0 SdLazy, 229 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 11765 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 17/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...