/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:32:05,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:32:05,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:32:05,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:32:05,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:32:05,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:32:05,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:32:05,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:32:05,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:32:05,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:32:05,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:32:05,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:32:05,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:32:05,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:32:05,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:32:05,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:32:05,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:32:05,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:32:05,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:32:05,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:32:05,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:32:05,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:32:05,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:32:05,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:32:05,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:32:05,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:32:05,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:32:05,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:32:05,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:32:05,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:32:05,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:32:05,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:32:05,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:32:05,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:32:05,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:32:05,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:32:05,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:32:05,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:32:05,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:32:05,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:32:05,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:32:05,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:32:05,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:32:05,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:32:05,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:32:05,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:32:05,435 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:32:05,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:32:05,436 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:32:05,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:32:05,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:32:05,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:32:05,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:32:05,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:32:05,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:32:05,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:32:05,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:32:05,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:32:05,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:32:05,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:32:05,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:32:05,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:32:05,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:32:05,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:32:05,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:32:05,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:32:05,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:32:05,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:32:05,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:32:05,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:32:05,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:32:05,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:32:05,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:32:05,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:32:05,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:32:05,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:32:05,913 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:32:05,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-24 21:32:06,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b600f3d1/4d8faa5b31e34ab1b275a734bc61bf10/FLAGd38cc3b23 [2020-09-24 21:32:06,507 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:32:06,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-24 21:32:06,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b600f3d1/4d8faa5b31e34ab1b275a734bc61bf10/FLAGd38cc3b23 [2020-09-24 21:32:06,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b600f3d1/4d8faa5b31e34ab1b275a734bc61bf10 [2020-09-24 21:32:06,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:32:06,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:32:06,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:06,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:32:06,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:32:06,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:06" (1/1) ... [2020-09-24 21:32:06,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:06, skipping insertion in model container [2020-09-24 21:32:06,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:32:06" (1/1) ... [2020-09-24 21:32:06,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:32:06,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:32:07,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:07,111 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:32:07,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:32:07,146 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:32:07,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07 WrapperNode [2020-09-24 21:32:07,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:32:07,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:32:07,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:32:07,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:32:07,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... [2020-09-24 21:32:07,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:32:07,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:32:07,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:32:07,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:32:07,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:32:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:32:07,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:32:07,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:32:07,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:32:07,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:32:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:32:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:32:07,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:32:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:32:07,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:32:07,547 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:32:07,548 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:32:07,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:07 BoogieIcfgContainer [2020-09-24 21:32:07,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:32:07,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:32:07,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:32:07,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:32:07,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:32:06" (1/3) ... [2020-09-24 21:32:07,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:07, skipping insertion in model container [2020-09-24 21:32:07,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:32:07" (2/3) ... [2020-09-24 21:32:07,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4c0bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:32:07, skipping insertion in model container [2020-09-24 21:32:07,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:32:07" (3/3) ... [2020-09-24 21:32:07,588 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2020-09-24 21:32:07,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:32:07,635 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:32:07,666 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:32:07,701 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:32:07,701 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:32:07,701 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:32:07,701 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:32:07,702 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:32:07,702 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:32:07,702 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:32:07,702 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:32:07,721 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:32:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:32:07,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:07,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:07,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:07,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:07,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:32:07,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:07,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958182188] [2020-09-24 21:32:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:32:08,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 21:32:08,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:32:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:32:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:08,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:08,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:32:08,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:08,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958182188] [2020-09-24 21:32:08,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:08,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:08,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864519961] [2020-09-24 21:32:08,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:08,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:08,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:08,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:08,253 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:32:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:08,383 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:32:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:08,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:32:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:08,399 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:08,399 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:32:08,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:32:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:32:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:08,460 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:32:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:08,461 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:08,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:08,461 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:32:08,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:08,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:08,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:32:08,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:32:08,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:08,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63245275] [2020-09-24 21:32:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:32:08,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 21:32:08,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:08,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:08,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:08,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:08,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 21:32:08,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:08,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63245275] [2020-09-24 21:32:08,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:08,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:08,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140974781] [2020-09-24 21:32:08,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:08,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:08,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:08,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:08,781 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:32:08,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:08,854 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:32:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:08,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:32:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:08,856 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:32:08,857 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:32:08,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:32:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:32:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:08,867 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:32:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:08,867 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:08,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:32:08,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:08,869 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:08,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:32:08,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:08,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:32:08,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:08,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418146982] [2020-09-24 21:32:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:08,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:32:10,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1774 [2020-09-24 21:32:10,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:10,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:32:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:10,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:10,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:10,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:10,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 21:32:10,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:10,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:10,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:32:10,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:10,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:10,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418146982] [2020-09-24 21:32:11,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:11,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:11,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229738751] [2020-09-24 21:32:11,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:11,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:11,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:11,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:11,010 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:32:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:11,238 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:32:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:11,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:32:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:11,243 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:11,243 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:32:11,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:32:11,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:32:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:32:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:32:11,273 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:32:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:11,276 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:32:11,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:32:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:32:11,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:11,280 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:11,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:32:11,283 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:11,283 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:32:11,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:11,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348385414] [2020-09-24 21:32:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:32:13,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:32:13,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1702 [2020-09-24 21:32:13,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:13,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:32:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:13,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:13,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:13,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:13,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:13,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:13,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-24 21:32:13,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:13,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:13,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:13,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348385414] [2020-09-24 21:32:13,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:13,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:13,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149700784] [2020-09-24 21:32:13,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:13,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:13,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:13,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:13,590 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 21:32:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:13,700 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-09-24 21:32:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:13,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 21:32:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:13,704 INFO L225 Difference]: With dead ends: 76 [2020-09-24 21:32:13,704 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 21:32:13,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 21:32:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2020-09-24 21:32:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 21:32:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2020-09-24 21:32:13,720 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 35 [2020-09-24 21:32:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:13,720 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2020-09-24 21:32:13,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2020-09-24 21:32:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:32:13,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:13,724 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:13,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:32:13,724 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:13,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:32:13,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:13,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388725091] [2020-09-24 21:32:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:32:18,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:32:18,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:18,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:18,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:18,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:18,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:22,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:32:22,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3928 [2020-09-24 21:32:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:22,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:22,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 21:32:22,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:22,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:22,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:22,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:22,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:22,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:22,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:22,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:22,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:22,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:22,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:22,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 21:32:22,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388725091] [2020-09-24 21:32:22,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:22,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:32:23,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326268203] [2020-09-24 21:32:23,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:32:23,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:23,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:32:23,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:23,001 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand 9 states. [2020-09-24 21:32:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:23,133 INFO L93 Difference]: Finished difference Result 138 states and 212 transitions. [2020-09-24 21:32:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:32:23,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 21:32:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:23,139 INFO L225 Difference]: With dead ends: 138 [2020-09-24 21:32:23,139 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 21:32:23,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 21:32:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-09-24 21:32:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 21:32:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 92 transitions. [2020-09-24 21:32:23,162 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 92 transitions. Word has length 51 [2020-09-24 21:32:23,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:23,163 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 92 transitions. [2020-09-24 21:32:23,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:32:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 92 transitions. [2020-09-24 21:32:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 21:32:23,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:23,167 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:23,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:32:23,168 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:23,168 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 2 times [2020-09-24 21:32:23,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:23,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223806487] [2020-09-24 21:32:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:28,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 21:32:28,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:32:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:28,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:28,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:28,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:28,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:32:33,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:33,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:33,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:33,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:32:33,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:34,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:35,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:35,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:32:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-09-24 21:32:35,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:35,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:35,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:35,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:32:35,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:35,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:35,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:35,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:35,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:35,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:35,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:35,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:35,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:35,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:32:35,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:35,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 21:32:35,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223806487] [2020-09-24 21:32:35,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:35,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:32:35,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819223880] [2020-09-24 21:32:35,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:32:35,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:35,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:32:35,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:35,758 INFO L87 Difference]: Start difference. First operand 68 states and 92 transitions. Second operand 12 states. [2020-09-24 21:32:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:35,927 INFO L93 Difference]: Finished difference Result 143 states and 219 transitions. [2020-09-24 21:32:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:32:35,927 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-09-24 21:32:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:35,930 INFO L225 Difference]: With dead ends: 143 [2020-09-24 21:32:35,930 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 21:32:35,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:32:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 21:32:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2020-09-24 21:32:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 21:32:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2020-09-24 21:32:35,943 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 87 [2020-09-24 21:32:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:35,943 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2020-09-24 21:32:35,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:32:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2020-09-24 21:32:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 21:32:35,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:35,947 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:35,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:35,948 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:35,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 2 times [2020-09-24 21:32:35,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:35,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642257858] [2020-09-24 21:32:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:35,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 21:32:40,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:32:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:32:40,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:40,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:40,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:45,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 21:32:45,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:32:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:45,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:32:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:32:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:46,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 21:32:46,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:32:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:46,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:46,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:46,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:46,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:46,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:46,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:46,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 21:32:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:47,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3728 [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:32:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:50,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:50,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 21:32:50,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:50,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:50,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:50,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:50,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 21:32:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:50,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:50,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:50,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:50,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 58 proven. 81 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-24 21:32:50,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642257858] [2020-09-24 21:32:50,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:50,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:32:50,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138889225] [2020-09-24 21:32:50,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:32:50,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:50,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:32:50,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:50,319 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand 10 states. [2020-09-24 21:32:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:50,571 INFO L93 Difference]: Finished difference Result 178 states and 263 transitions. [2020-09-24 21:32:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:32:50,572 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-24 21:32:50,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:50,575 INFO L225 Difference]: With dead ends: 178 [2020-09-24 21:32:50,575 INFO L226 Difference]: Without dead ends: 118 [2020-09-24 21:32:50,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:32:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-24 21:32:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 99. [2020-09-24 21:32:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-24 21:32:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2020-09-24 21:32:50,597 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 89 [2020-09-24 21:32:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:50,600 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2020-09-24 21:32:50,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:32:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2020-09-24 21:32:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:32:50,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:50,603 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:50,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:32:50,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:50,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:50,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-24 21:32:50,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:50,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565529083] [2020-09-24 21:32:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:55,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 21:32:55,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:32:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:55,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:32:55,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:55,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:55,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:55,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:55,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:55,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:55,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:55,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:55,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:56,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:58,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:00,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:33:00,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 21:33:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:33:00,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:33:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:33:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 21:33:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking...