/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/id_i15_o15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:24:00,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:24:01,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:24:01,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:24:01,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:24:01,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:24:01,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:24:01,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:24:01,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:24:01,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:24:01,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:24:01,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:24:01,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:24:01,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:24:01,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:24:01,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:24:01,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:24:01,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:24:01,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:24:01,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:24:01,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:24:01,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:24:01,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:24:01,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:24:01,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:24:01,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:24:01,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:24:01,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:24:01,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:24:01,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:24:01,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:24:01,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:24:01,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:24:01,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:24:01,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:24:01,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:24:01,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:24:01,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:24:01,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:24:01,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:24:01,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:24:01,113 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 [2020-09-21 12:24:01,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:24:01,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:24:01,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:24:01,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:24:01,159 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:24:01,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:24:01,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:24:01,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:24:01,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:24:01,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:24:01,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:24:01,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:24:01,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:24:01,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:24:01,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:24:01,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:24:01,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:24:01,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:24:01,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:24:01,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:24:01,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:24:01,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:24:01,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:24:01,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:24:01,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:24:01,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:24:01,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:24:01,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:24:01,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:24:01,165 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:24:01,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:24:01,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:24:01,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:24:01,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:24:01,640 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:24:01,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-21 12:24:01,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc714360d/f2d2023672e047adbd97a25cc671b59e/FLAG91fe02716 [2020-09-21 12:24:02,226 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:24:02,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-21 12:24:02,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc714360d/f2d2023672e047adbd97a25cc671b59e/FLAG91fe02716 [2020-09-21 12:24:02,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc714360d/f2d2023672e047adbd97a25cc671b59e [2020-09-21 12:24:02,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:24:02,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:24:02,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:24:02,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:24:02,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:24:02,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70996f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02, skipping insertion in model container [2020-09-21 12:24:02,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:24:02,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:24:02,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:24:02,867 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:24:02,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:24:02,898 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:24:02,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02 WrapperNode [2020-09-21 12:24:02,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:24:02,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:24:02,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:24:02,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:24:02,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (1/1) ... [2020-09-21 12:24:02,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:24:02,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:24:02,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:24:02,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:24:02,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (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 [2020-09-21 12:24:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:24:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:24:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-21 12:24:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:24:03,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:24:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:24:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-21 12:24:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:24:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:24:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:24:03,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:24:03,275 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:24:03,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:03 BoogieIcfgContainer [2020-09-21 12:24:03,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:24:03,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:24:03,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:24:03,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:24:03,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:24:02" (1/3) ... [2020-09-21 12:24:03,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbed3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:03, skipping insertion in model container [2020-09-21 12:24:03,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:02" (2/3) ... [2020-09-21 12:24:03,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbed3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:03, skipping insertion in model container [2020-09-21 12:24:03,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:03" (3/3) ... [2020-09-21 12:24:03,289 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2020-09-21 12:24:03,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:24:03,309 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:24:03,331 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:24:03,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:24:03,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:24:03,362 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:24:03,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:24:03,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:24:03,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:24:03,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:24:03,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:24:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-21 12:24:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:24:03,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:03,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:03,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-09-21 12:24:03,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:03,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921033292] [2020-09-21 12:24:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:03,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:03,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:03,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:24:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-21 12:24:03,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:24:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:03,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:24:03,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:24:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:03,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:03,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:03,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:03,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:24:03,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:03,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:03,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:03,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:03,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:24:03,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:24:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:24:03,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:24:03,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921033292] [2020-09-21 12:24:03,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:24:03,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:24:03,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031279328] [2020-09-21 12:24:03,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:24:03,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:03,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:24:03,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:24:03,875 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-09-21 12:24:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:03,965 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-09-21 12:24:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:24:03,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:24:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:03,984 INFO L225 Difference]: With dead ends: 30 [2020-09-21 12:24:03,984 INFO L226 Difference]: Without dead ends: 18 [2020-09-21 12:24:03,988 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 [2020-09-21 12:24:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-21 12:24:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-09-21 12:24:04,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-09-21 12:24:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-09-21 12:24:04,043 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-09-21 12:24:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:04,044 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-09-21 12:24:04,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:24:04,044 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-09-21 12:24:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:24:04,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:04,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:04,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:24:04,048 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:04,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:04,048 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-09-21 12:24:04,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:04,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914613139] [2020-09-21 12:24:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:24:04,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-21 12:24:04,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:24:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:24:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:24:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:04,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:04,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:04,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:04,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:04,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:04,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:04,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:04,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:04,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:04,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:04,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:04,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 12:24:04,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:04,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:04,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:04,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:04,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:24:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:04,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:24:04,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914613139] [2020-09-21 12:24:04,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:04,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:24:04,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256790534] [2020-09-21 12:24:04,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:24:04,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:04,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:24:04,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:24:04,909 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2020-09-21 12:24:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:04,943 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-09-21 12:24:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:24:04,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-21 12:24:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:04,944 INFO L225 Difference]: With dead ends: 25 [2020-09-21 12:24:04,945 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 12:24:04,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:24:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 12:24:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 12:24:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 12:24:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-21 12:24:04,953 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-09-21 12:24:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:04,953 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-21 12:24:04,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:24:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-21 12:24:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:24:04,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:04,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:04,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:24:04,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-09-21 12:24:04,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:04,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627694997] [2020-09-21 12:24:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:24:05,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-09-21 12:24:05,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:24:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:24:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:24:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:05,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:05,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:05,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:05,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:05,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:24:05,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:05,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:05,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:24:05,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:05,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:05,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:05,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:05,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:24:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:24:05,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627694997] [2020-09-21 12:24:05,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:05,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:24:05,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171459060] [2020-09-21 12:24:05,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:24:05,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:05,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:24:05,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:24:05,937 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-09-21 12:24:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:05,973 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-09-21 12:24:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:24:05,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-09-21 12:24:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:05,976 INFO L225 Difference]: With dead ends: 28 [2020-09-21 12:24:05,976 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 12:24:05,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:24:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 12:24:05,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-21 12:24:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 12:24:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-21 12:24:05,985 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-09-21 12:24:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:05,986 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-21 12:24:05,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:24:05,986 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-21 12:24:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 12:24:05,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:05,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:05,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:24:05,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:05,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-09-21 12:24:05,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:05,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002922636] [2020-09-21 12:24:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:06,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:24:06,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:06,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-09-21 12:24:06,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:24:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:06,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:06,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:06,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:06,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-21 12:24:06,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:24:06,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:24:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:07,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:07,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-21 12:24:07,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:07,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:07,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:24:07,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:07,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:07,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:07,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:07,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:07,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:07,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:24:07,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002922636] [2020-09-21 12:24:07,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:07,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:24:07,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867525798] [2020-09-21 12:24:07,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:24:07,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:07,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:24:07,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:24:07,298 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2020-09-21 12:24:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:07,399 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-21 12:24:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:24:07,400 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-21 12:24:07,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:07,402 INFO L225 Difference]: With dead ends: 31 [2020-09-21 12:24:07,402 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 12:24:07,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:24:07,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 12:24:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 12:24:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 12:24:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-09-21 12:24:07,409 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-09-21 12:24:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:07,410 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-09-21 12:24:07,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:24:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-09-21 12:24:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:24:07,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:07,412 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:07,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:24:07,412 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:07,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-09-21 12:24:07,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:07,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850357040] [2020-09-21 12:24:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:07,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-21 12:24:08,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:08,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:24:08,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:24:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:08,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:24:08,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:08,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:08,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:08,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:08,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:08,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:08,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-21 12:24:08,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:24:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:24:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:08,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:08,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-21 12:24:08,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:08,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:08,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:08,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:08,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:08,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:08,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:08,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:24:08,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:08,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:08,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:09,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:09,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:09,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:24:09,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:09,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:09,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:09,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:09,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:09,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:09,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:24:09,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-21 12:24:09,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850357040] [2020-09-21 12:24:09,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:09,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:24:09,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677155686] [2020-09-21 12:24:09,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:24:09,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:09,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:24:09,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:24:09,057 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 10 states. [2020-09-21 12:24:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:09,154 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-21 12:24:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:24:09,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-09-21 12:24:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:09,156 INFO L225 Difference]: With dead ends: 34 [2020-09-21 12:24:09,156 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 12:24:09,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:24:09,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 12:24:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 12:24:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:24:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-21 12:24:09,164 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-09-21 12:24:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:09,164 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-21 12:24:09,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:24:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-21 12:24:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 12:24:09,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:09,166 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:09,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:24:09,167 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:09,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-09-21 12:24:09,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:09,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028217048] [2020-09-21 12:24:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:09,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 12:24:10,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:24:10,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:24:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:10,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:10,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:10,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:10,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-21 12:24:10,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:24:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:24:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:10,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:10,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-21 12:24:10,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:10,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-21 12:24:10,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:10,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:10,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:24:10,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:11,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:11,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:24:11,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:11,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:11,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:11,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:11,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:11,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-21 12:24:11,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028217048] [2020-09-21 12:24:11,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:11,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 12:24:11,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617852907] [2020-09-21 12:24:11,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:24:11,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:11,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:24:11,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:24:11,131 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-21 12:24:11,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:11,284 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-21 12:24:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:24:11,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-09-21 12:24:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:11,290 INFO L225 Difference]: With dead ends: 37 [2020-09-21 12:24:11,291 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 12:24:11,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:24:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 12:24:11,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-21 12:24:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 12:24:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-21 12:24:11,308 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-09-21 12:24:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:11,309 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-21 12:24:11,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:24:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-21 12:24:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-21 12:24:11,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:11,313 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:11,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:24:11,318 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:11,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-09-21 12:24:11,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:11,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444627143] [2020-09-21 12:24:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 12:24:12,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:24:12,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:24:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-21 12:24:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:12,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:12,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:12,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-21 12:24:12,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:12,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:12,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:12,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:12,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-21 12:24:12,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:13,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:13,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:13,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-21 12:24:13,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:13,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:13,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:13,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-21 12:24:13,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:13,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:13,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:13,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:13,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 12:24:13,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:13,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:13,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:13,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:24:13,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:13,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:13,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:13,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:24:13,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-21 12:24:13,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444627143] [2020-09-21 12:24:13,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:13,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 12:24:13,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485160485] [2020-09-21 12:24:13,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 12:24:13,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:13,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 12:24:13,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:24:13,617 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2020-09-21 12:24:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:13,675 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-09-21 12:24:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:24:13,676 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-09-21 12:24:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:13,678 INFO L225 Difference]: With dead ends: 40 [2020-09-21 12:24:13,679 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 12:24:13,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:24:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 12:24:13,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 12:24:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 12:24:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-21 12:24:13,692 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-09-21 12:24:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:13,695 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-21 12:24:13,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 12:24:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-21 12:24:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:24:13,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:13,697 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:13,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:24:13,700 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:13,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1532150511, now seen corresponding path program 7 times [2020-09-21 12:24:13,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:13,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895921258] [2020-09-21 12:24:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:14,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:24:14,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:24:14,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 12:24:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-21 12:24:14,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:24:14,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:14,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:14,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:14,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:14,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:15,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-21 12:24:15,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:15,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:15,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-09-21 12:24:15,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:15,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:15,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:15,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:15,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:15,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-21 12:24:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:15,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:15,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:15,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-21 12:24:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:16,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:16,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:16,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:24:16,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:16,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:16,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:16,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:16,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:16,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:24:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:24:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:16,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:16,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:16,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:24:16,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:24:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:16,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:24:16,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-21 12:24:16,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895921258] [2020-09-21 12:24:16,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:16,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 12:24:16,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976180934] [2020-09-21 12:24:16,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 12:24:16,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:16,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 12:24:16,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:24:16,422 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 19 states. [2020-09-21 12:24:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:16,481 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-21 12:24:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:24:16,483 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-09-21 12:24:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:16,484 INFO L225 Difference]: With dead ends: 43 [2020-09-21 12:24:16,484 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:24:16,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:24:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:24:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 12:24:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:24:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-09-21 12:24:16,496 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-09-21 12:24:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:16,498 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-09-21 12:24:16,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-21 12:24:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-09-21 12:24:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:24:16,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:16,501 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:16,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:24:16,504 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:16,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1140618237, now seen corresponding path program 8 times [2020-09-21 12:24:16,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:16,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628769861] [2020-09-21 12:24:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:17,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:17,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 12:24:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-21 12:24:17,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:24:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:24:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:17,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:17,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:17,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:17,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:17,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:24:17,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:17,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:17,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:18,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:18,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-21 12:24:18,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-21 12:24:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:24:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:18,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:18,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-21 12:24:18,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:24:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:18,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:18,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:18,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-21 12:24:18,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:18,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:24:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:19,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-21 12:24:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:19,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:19,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-21 12:24:19,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:19,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-21 12:24:19,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:19,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 12:24:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:19,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:19,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:24:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:19,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:19,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:19,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:19,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:19,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:24:19,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:19,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 14 proven. 121 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-21 12:24:19,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628769861] [2020-09-21 12:24:19,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:19,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 12:24:19,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626536648] [2020-09-21 12:24:19,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 12:24:19,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:19,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 12:24:19,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:24:19,716 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 14 states. [2020-09-21 12:24:19,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:19,934 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-21 12:24:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:24:19,935 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-21 12:24:19,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:19,936 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:24:19,936 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 12:24:19,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:24:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 12:24:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-21 12:24:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 12:24:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-21 12:24:19,950 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-09-21 12:24:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:19,951 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-21 12:24:19,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 12:24:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-21 12:24:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 12:24:19,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:19,954 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:19,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:24:19,955 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1749177617, now seen corresponding path program 9 times [2020-09-21 12:24:19,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:19,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493612110] [2020-09-21 12:24:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:19,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:20,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:20,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:20,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:24:20,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:24:20,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:20,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:24:20,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:24:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:24:20,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:21,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:21,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:21,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:21,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:21,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:21,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:21,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:21,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-21 12:24:21,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 12:24:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:24:21,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:24:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:21,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:22,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:22,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:22,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-21 12:24:22,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 12:24:22,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:22,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:22,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:22,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-21 12:24:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:24:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:22,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:22,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:22,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:22,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-21 12:24:22,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:24:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:23,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-21 12:24:23,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:23,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-21 12:24:23,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:23,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:24:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-21 12:24:23,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:24:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:23,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:24:23,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:24:23,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:23,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:23,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:24:23,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:24:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:23,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:23,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:23,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:23,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:24:23,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 15 proven. 158 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-21 12:24:23,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493612110] [2020-09-21 12:24:23,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:23,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 12:24:23,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597148180] [2020-09-21 12:24:23,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 12:24:23,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:23,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 12:24:23,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:24:23,742 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 16 states. [2020-09-21 12:24:23,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:23,906 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-21 12:24:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:24:23,906 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-09-21 12:24:23,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:23,910 INFO L225 Difference]: With dead ends: 49 [2020-09-21 12:24:23,910 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 12:24:23,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=421, Unknown=0, NotChecked=0, Total=650 [2020-09-21 12:24:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 12:24:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-21 12:24:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 12:24:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-21 12:24:23,923 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-09-21 12:24:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:23,923 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-21 12:24:23,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 12:24:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-21 12:24:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 12:24:23,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:23,924 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:23,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:24:23,925 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:23,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:23,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1580609155, now seen corresponding path program 10 times [2020-09-21 12:24:23,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:23,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001083705] [2020-09-21 12:24:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:24,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 12:24:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:24,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:24,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:24,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:24,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:25,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:25,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:25,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-21 12:24:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:26,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:26,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:26,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-09-21 12:24:26,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:26,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:26,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:26,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-09-21 12:24:26,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:26,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:26,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:26,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-21 12:24:26,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:27,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-21 12:24:27,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:27,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:27,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-21 12:24:27,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:27,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-21 12:24:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:27,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:24:27,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:27,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:27,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:24:27,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-21 12:24:27,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:27,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:24:27,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:27,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:27,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:27,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:24:27,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:27,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-21 12:24:27,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001083705] [2020-09-21 12:24:27,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:27,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-21 12:24:27,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273373748] [2020-09-21 12:24:27,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-21 12:24:27,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:27,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-21 12:24:27,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-21 12:24:27,930 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 25 states. [2020-09-21 12:24:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:27,991 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-09-21 12:24:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 12:24:27,992 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 73 [2020-09-21 12:24:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:27,994 INFO L225 Difference]: With dead ends: 52 [2020-09-21 12:24:27,994 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 12:24:27,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-21 12:24:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 12:24:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-21 12:24:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 12:24:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-21 12:24:28,002 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2020-09-21 12:24:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:28,002 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-21 12:24:28,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-21 12:24:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-21 12:24:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 12:24:28,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:28,004 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:28,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:24:28,004 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:28,005 INFO L82 PathProgramCache]: Analyzing trace with hash -223837457, now seen corresponding path program 11 times [2020-09-21 12:24:28,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:28,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249586908] [2020-09-21 12:24:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 12:24:29,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:24:29,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 12:24:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-21 12:24:29,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:24:29,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:29,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:29,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:29,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:29,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-09-21 12:24:29,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:29,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:24:29,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:30,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:30,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:30,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-21 12:24:30,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:30,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:30,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:30,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-21 12:24:30,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:30,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:31,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:31,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-21 12:24:31,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:31,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:31,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:31,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:31,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:31,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:31,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-21 12:24:31,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:31,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:31,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-21 12:24:31,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:31,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:31,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:32,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-21 12:24:32,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:32,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 12:24:32,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:32,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:24:32,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:32,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:32,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:32,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:24:32,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:32,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:32,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:32,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:32,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:24:32,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:32,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-21 12:24:32,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249586908] [2020-09-21 12:24:32,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:32,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-21 12:24:32,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308473708] [2020-09-21 12:24:32,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-21 12:24:32,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:32,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-21 12:24:32,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:24:32,643 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 27 states. [2020-09-21 12:24:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:32,742 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-21 12:24:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-21 12:24:32,744 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 79 [2020-09-21 12:24:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:32,745 INFO L225 Difference]: With dead ends: 55 [2020-09-21 12:24:32,745 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 12:24:32,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:24:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 12:24:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-21 12:24:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-21 12:24:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-21 12:24:32,753 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2020-09-21 12:24:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:32,753 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-21 12:24:32,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-21 12:24:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-21 12:24:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 12:24:32,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:32,754 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:32,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:24:32,755 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:32,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:32,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1653931773, now seen corresponding path program 12 times [2020-09-21 12:24:32,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:32,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290344305] [2020-09-21 12:24:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:24:33,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:33,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:24:33,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-21 12:24:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-21 12:24:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 12:24:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:33,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:33,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:33,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:33,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:33,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:33,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:33,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:33,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:34,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:34,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:24:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-09-21 12:24:34,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:24:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-21 12:24:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:34,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-21 12:24:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:24:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:35,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:35,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:35,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-09-21 12:24:35,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:35,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:35,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:36,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:36,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-21 12:24:36,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:36,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:36,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-21 12:24:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:36,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:36,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:36,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:36,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-21 12:24:36,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:36,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:36,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:37,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-21 12:24:37,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:37,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:37,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-21 12:24:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:37,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 12:24:37,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:37,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:24:37,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:37,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:24:37,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:37,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:24:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:37,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:37,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:24:37,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-21 12:24:37,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290344305] [2020-09-21 12:24:37,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:37,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-21 12:24:37,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026390245] [2020-09-21 12:24:37,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-21 12:24:37,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:37,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-21 12:24:37,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:24:37,959 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 29 states. [2020-09-21 12:24:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:38,041 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-09-21 12:24:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-21 12:24:38,042 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 85 [2020-09-21 12:24:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:38,043 INFO L225 Difference]: With dead ends: 58 [2020-09-21 12:24:38,044 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 12:24:38,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:24:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 12:24:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 12:24:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 12:24:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-21 12:24:38,051 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2020-09-21 12:24:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:38,052 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-21 12:24:38,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-21 12:24:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-21 12:24:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-21 12:24:38,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:38,053 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:38,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:24:38,054 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash -218674449, now seen corresponding path program 13 times [2020-09-21 12:24:38,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:38,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057405538] [2020-09-21 12:24:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:38,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-21 12:24:39,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:24:39,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 12:24:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:24:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:24:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:39,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:39,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:24:39,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-09-21 12:24:39,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:24:39,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:39,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-21 12:24:39,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-21 12:24:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:41,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:41,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:41,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:41,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-21 12:24:41,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:41,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:41,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:41,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:24:41,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:41,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:41,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:41,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:41,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-21 12:24:41,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:42,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:42,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:42,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:42,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-21 12:24:42,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:42,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:42,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:42,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:42,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-21 12:24:42,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:42,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:42,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:42,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-21 12:24:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:43,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:43,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:43,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-21 12:24:43,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:43,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:43,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:43,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:43,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-21 12:24:43,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:43,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:43,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:43,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:43,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:43,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-21 12:24:43,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:43,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:43,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 12:24:43,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:43,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:43,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:43,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:43,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:24:43,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:43,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:43,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:44,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:44,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:44,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:44,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:24:44,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:24:44,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:44,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:44,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:44,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:44,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:24:44,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:44,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:44,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:24:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-21 12:24:44,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057405538] [2020-09-21 12:24:44,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:44,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-21 12:24:44,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251024594] [2020-09-21 12:24:44,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-21 12:24:44,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-21 12:24:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-21 12:24:44,211 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 31 states. [2020-09-21 12:24:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:44,329 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-21 12:24:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-21 12:24:44,330 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 91 [2020-09-21 12:24:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:44,332 INFO L225 Difference]: With dead ends: 61 [2020-09-21 12:24:44,332 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 12:24:44,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-21 12:24:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 12:24:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-21 12:24:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 12:24:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-09-21 12:24:44,356 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2020-09-21 12:24:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:44,357 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-09-21 12:24:44,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-21 12:24:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-09-21 12:24:44,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-21 12:24:44,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:44,362 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:44,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:24:44,362 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:44,363 INFO L82 PathProgramCache]: Analyzing trace with hash 492436605, now seen corresponding path program 14 times [2020-09-21 12:24:44,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:44,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684109119] [2020-09-21 12:24:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:24:45,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:24:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:45,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:45,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:24:45,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:24:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:24:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:24:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:24:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:46,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:46,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-21 12:24:46,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-09-21 12:24:46,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-21 12:24:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-21 12:24:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:46,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:47,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:47,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:24:47,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-09-21 12:24:47,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 12:24:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:47,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-21 12:24:47,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:48,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:48,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-21 12:24:48,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-21 12:24:48,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-21 12:24:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-21 12:24:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:48,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-21 12:24:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-09-21 12:24:48,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 12:24:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-21 12:24:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:48,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:49,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:24:49,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:49,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-21 12:24:49,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:24:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:24:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:49,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:49,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:49,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:24:49,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-21 12:24:49,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 12:24:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:49,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 12:24:49,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:50,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:50,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:24:50,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-09-21 12:24:50,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-21 12:24:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:50,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 12:24:50,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:50,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:50,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:24:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-21 12:24:50,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:50,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 12:24:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:24:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:50,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:50,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:24:50,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-21 12:24:50,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 12:24:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:24:50,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:50,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:50,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:50,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:50,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 12:24:50,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:50,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-21 12:24:50,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:50,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:24:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:24:50,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:51,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:51,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 12:24:51,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-21 12:24:51,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:24:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 12:24:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:24:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:51,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:51,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:24:51,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 12:24:51,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:24:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:24:51,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:51,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:51,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:24:51,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:24:51,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:24:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:24:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:51,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:51,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:51,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-21 12:24:51,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:24:51,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:24:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:24:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:51,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:24:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:24:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:24:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:24:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:24:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:24:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:24:51,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:24:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:24:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:24:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:24:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:24:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-09-21 12:24:51,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684109119] [2020-09-21 12:24:51,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:24:51,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-21 12:24:51,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126610791] [2020-09-21 12:24:51,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-21 12:24:51,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:24:51,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-21 12:24:51,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 12:24:51,531 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 33 states. [2020-09-21 12:24:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:24:51,625 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-21 12:24:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-21 12:24:51,626 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 97 [2020-09-21 12:24:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:24:51,627 INFO L225 Difference]: With dead ends: 64 [2020-09-21 12:24:51,627 INFO L226 Difference]: Without dead ends: 60 [2020-09-21 12:24:51,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 12:24:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-21 12:24:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-21 12:24:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-21 12:24:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-21 12:24:51,634 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2020-09-21 12:24:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:24:51,637 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-21 12:24:51,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-21 12:24:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-21 12:24:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 12:24:51,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:24:51,638 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:24:51,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:24:51,638 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:24:51,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:24:51,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1083048687, now seen corresponding path program 15 times [2020-09-21 12:24:51,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:24:51,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308565923] [2020-09-21 12:24:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:24:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:24:51,658 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:24:51,658 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:24:51,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 12:24:51,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:24:51 BoogieIcfgContainer [2020-09-21 12:24:51,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:24:51,689 INFO L168 Benchmark]: Toolchain (without parser) took 49088.12 ms. Allocated memory was 140.5 MB in the beginning and 499.6 MB in the end (delta: 359.1 MB). Free memory was 102.5 MB in the beginning and 285.5 MB in the end (delta: -183.0 MB). Peak memory consumption was 176.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:24:51,689 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:24:51,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.17 ms. Allocated memory is still 140.5 MB. Free memory was 101.9 MB in the beginning and 92.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:24:51,691 INFO L168 Benchmark]: Boogie Preprocessor took 29.16 ms. Allocated memory is still 140.5 MB. Free memory was 92.7 MB in the beginning and 91.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:24:51,691 INFO L168 Benchmark]: RCFGBuilder took 350.64 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 172.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:24:51,692 INFO L168 Benchmark]: TraceAbstraction took 48405.14 ms. Allocated memory was 203.9 MB in the beginning and 499.6 MB in the end (delta: 295.7 MB). Free memory was 172.0 MB in the beginning and 285.5 MB in the end (delta: -113.5 MB). Peak memory consumption was 182.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:24:51,695 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.17 ms. Allocated memory is still 140.5 MB. Free memory was 101.9 MB in the beginning and 92.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.16 ms. Allocated memory is still 140.5 MB. Free memory was 92.7 MB in the beginning and 91.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.64 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 172.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48405.14 ms. Allocated memory was 203.9 MB in the beginning and 499.6 MB in the end (delta: 295.7 MB). Free memory was 172.0 MB in the beginning and 285.5 MB in the end (delta: -113.5 MB). Peak memory consumption was 182.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 15; [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 15 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.3s, OverallIterations: 16, TraceHistogramMax: 16, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 217 SDtfs, 137 SDslu, 1390 SDs, 0 SdLazy, 490 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 45.8s InterpolantComputationTime, 928 NumberOfCodeBlocks, 928 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 112092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 1498/3150 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...