/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o1000.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:05:07,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:05:07,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:05:07,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:05:07,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:05:07,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:05:07,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:05:07,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:05:07,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:05:07,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:05:07,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:05:07,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:05:07,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:05:07,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:05:07,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:05:07,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:05:07,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:05:07,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:05:07,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:05:07,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:05:07,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:05:07,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:05:07,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:05:07,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:05:07,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:05:07,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:05:07,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:05:07,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:05:07,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:05:07,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:05:07,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:05:07,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:05:07,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:05:07,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:05:07,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:05:07,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:05:07,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:05:07,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:05:07,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:05:07,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:05:07,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:05:07,315 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 17:05:07,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:05:07,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:05:07,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:05:07,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:05:07,357 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:05:07,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:05:07,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:05:07,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:05:07,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:05:07,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:05:07,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:05:07,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:05:07,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:05:07,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:05:07,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:05:07,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:05:07,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:05:07,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:05:07,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:05:07,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:05:07,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:05:07,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:05:07,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:05:07,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:05:07,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:05:07,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:05:07,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:05:07,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:05:07,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:05:07,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;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;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;log-additional-information=true; [2020-09-24 17:05:07,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:05:07,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:05:07,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:05:07,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:05:07,862 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:05:07,864 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-09-24 17:05:07,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4abd7f8c/88f8b4964f0a435899dab8085523aa58/FLAGd11100a95 [2020-09-24 17:05:08,535 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:05:08,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o1000.c [2020-09-24 17:05:08,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4abd7f8c/88f8b4964f0a435899dab8085523aa58/FLAGd11100a95 [2020-09-24 17:05:08,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4abd7f8c/88f8b4964f0a435899dab8085523aa58 [2020-09-24 17:05:08,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:05:08,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:05:08,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:08,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:05:08,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:05:08,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:08" (1/1) ... [2020-09-24 17:05:08,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550d844f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:08, skipping insertion in model container [2020-09-24 17:05:08,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:05:08" (1/1) ... [2020-09-24 17:05:08,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:05:08,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:05:09,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:09,154 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:05:09,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:05:09,193 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:05:09,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09 WrapperNode [2020-09-24 17:05:09,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:05:09,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:05:09,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:05:09,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:05:09,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (1/1) ... [2020-09-24 17:05:09,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (1/1) ... [2020-09-24 17:05:09,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (1/1) ... [2020-09-24 17:05:09,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (1/1) ... [2020-09-24 17:05:09,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (1/1) ... [2020-09-24 17:05:09,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (1/1) ... [2020-09-24 17:05:09,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (1/1) ... [2020-09-24 17:05:09,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:05:09,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:05:09,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:05:09,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:05:09,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (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 17:05:09,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:05:09,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:05:09,385 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 17:05:09,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:05:09,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 17:05:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:05:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 17:05:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:05:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:05:09,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:05:09,571 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:05:09,571 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:05:09,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:09 BoogieIcfgContainer [2020-09-24 17:05:09,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:05:09,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:05:09,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:05:09,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:05:09,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:05:08" (1/3) ... [2020-09-24 17:05:09,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5535098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:09, skipping insertion in model container [2020-09-24 17:05:09,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:05:09" (2/3) ... [2020-09-24 17:05:09,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5535098a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:05:09, skipping insertion in model container [2020-09-24 17:05:09,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:05:09" (3/3) ... [2020-09-24 17:05:09,587 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o1000.c [2020-09-24 17:05:09,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:05:09,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:05:09,630 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:05:09,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:05:09,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:05:09,660 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:05:09,660 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:05:09,660 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:05:09,660 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:05:09,661 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:05:09,661 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:05:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 17:05:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 17:05:09,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:09,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:09,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:09,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:09,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 17:05:09,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:09,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309993683] [2020-09-24 17:05:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:09,908 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:09,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:05:09,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 17:05:09,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:05:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:05:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:09,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:10,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:05:10,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:10,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:10,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:05:10,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:10,081 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 17:05:10,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309993683] [2020-09-24 17:05:10,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:05:10,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:05:10,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908707059] [2020-09-24 17:05:10,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:05:10,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:10,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:05:10,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:05:10,126 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 17:05:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:10,202 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 17:05:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:05:10,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 17:05:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:10,224 INFO L225 Difference]: With dead ends: 37 [2020-09-24 17:05:10,224 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 17:05:10,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 17:05:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 17:05:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 17:05:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 17:05:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 17:05:10,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 17:05:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:10,290 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 17:05:10,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:05:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 17:05:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 17:05:10,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:10,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:10,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:05:10,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:10,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:10,294 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 17:05:10,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:10,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864713403] [2020-09-24 17:05:10,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,536 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:05:10,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 17:05:10,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:05:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 17:05:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:05:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:10,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,618 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:10,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:05:10,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:10,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:10,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 17:05:10,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:10,818 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:10,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:10,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:05:10,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:10,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:05:10,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864713403] [2020-09-24 17:05:10,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:10,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 17:05:10,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135159064] [2020-09-24 17:05:10,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:05:10,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:05:10,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:05:10,846 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 17:05:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:10,963 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 17:05:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:05:10,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 17:05:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:10,966 INFO L225 Difference]: With dead ends: 31 [2020-09-24 17:05:10,967 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 17:05:10,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:05:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 17:05:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 17:05:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 17:05:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 17:05:10,984 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 17:05:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:10,984 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 17:05:10,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:05:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 17:05:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 17:05:10,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:10,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:10,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:05:10,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 17:05:10,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:10,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48477328] [2020-09-24 17:05:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:05:11,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 17:05:11,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:05:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 17:05:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:05:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,324 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:11,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:05:11,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:11,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 17:05:11,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:11,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 17:05:11,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:11,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:11,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:11,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:11,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:11,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:05:11,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:11,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:11,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:05:11,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48477328] [2020-09-24 17:05:11,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:11,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:05:11,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795967030] [2020-09-24 17:05:11,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:05:11,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:11,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:05:11,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:05:11,606 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 17:05:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:11,703 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 17:05:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:05:11,703 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 17:05:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:11,705 INFO L225 Difference]: With dead ends: 35 [2020-09-24 17:05:11,705 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 17:05:11,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:05:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 17:05:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 17:05:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 17:05:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 17:05:11,713 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 17:05:11,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:11,714 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 17:05:11,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:05:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 17:05:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 17:05:11,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:11,716 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:11,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:05:11,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:11,717 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 17:05:11,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:11,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363358016] [2020-09-24 17:05:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,026 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 17:05:12,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-24 17:05:12,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 17:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 17:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:05:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,100 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:12,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:05:12,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:12,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,301 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:12,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-24 17:05:12,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:12,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 17:05:12,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,591 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:12,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 17:05:12,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:12,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:12,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:12,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:12,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:12,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:05:12,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:12,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:12,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 17:05:12,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363358016] [2020-09-24 17:05:12,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:12,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:05:12,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876901214] [2020-09-24 17:05:12,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:05:12,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:12,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:05:12,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:05:12,705 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 17:05:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:12,864 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 17:05:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:05:12,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 17:05:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:12,866 INFO L225 Difference]: With dead ends: 39 [2020-09-24 17:05:12,866 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 17:05:12,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:05:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 17:05:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 17:05:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 17:05:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 17:05:12,883 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 17:05:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:12,886 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 17:05:12,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:05:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 17:05:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 17:05:12,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:12,890 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:12,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:05:12,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:12,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 17:05:12,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:12,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260303495] [2020-09-24 17:05:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,226 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:05:13,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-24 17:05:13,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:05:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:05:13,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 17:05:13,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:13,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,277 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:13,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:13,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:13,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:13,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:13,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,501 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:13,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 17:05:13,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:13,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 17:05:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:13,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:13,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,830 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:13,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 17:05:13,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,914 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:13,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 17:05:13,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:13,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:13,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:13,979 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:13,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:13,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:05:13,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:13,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 17:05:14,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260303495] [2020-09-24 17:05:14,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:14,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 17:05:14,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316312577] [2020-09-24 17:05:14,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:05:14,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:14,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:05:14,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:05:14,027 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 17:05:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:14,274 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 17:05:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:05:14,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 17:05:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:14,276 INFO L225 Difference]: With dead ends: 43 [2020-09-24 17:05:14,277 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 17:05:14,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:05:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 17:05:14,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 17:05:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 17:05:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 17:05:14,285 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 17:05:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:14,286 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 17:05:14,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:05:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 17:05:14,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 17:05:14,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:14,288 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:14,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:05:14,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:14,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:14,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 17:05:14,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:14,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353700102] [2020-09-24 17:05:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:14,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:14,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 17:05:14,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:14,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-24 17:05:14,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:05:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 17:05:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:05:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:14,800 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:14,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:14,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:14,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:14,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:14,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,142 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:15,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-24 17:05:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:15,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 17:05:15,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:15,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:15,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:15,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 17:05:15,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,754 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:15,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 17:05:15,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 17:05:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:15,952 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:15,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:15,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:15,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:05:15,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 17:05:15,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353700102] [2020-09-24 17:05:15,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:15,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:05:15,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588703795] [2020-09-24 17:05:15,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:05:15,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:15,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:05:15,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:05:15,998 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 17:05:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:16,239 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 17:05:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 17:05:16,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 17:05:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:16,241 INFO L225 Difference]: With dead ends: 47 [2020-09-24 17:05:16,241 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 17:05:16,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:16,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 17:05:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 17:05:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 17:05:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 17:05:16,249 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 17:05:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:16,250 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 17:05:16,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:05:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 17:05:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 17:05:16,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:16,252 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:16,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:05:16,252 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:16,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 17:05:16,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:16,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289999037] [2020-09-24 17:05:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 17:05:16,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-24 17:05:16,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 17:05:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 17:05:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 17:05:16,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:16,847 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:16,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:16,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:16,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:16,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,317 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:17,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-09-24 17:05:17,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:17,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-24 17:05:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:17,970 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:17,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:17,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:17,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 17:05:17,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:17,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:17,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 17:05:18,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:18,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 17:05:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,383 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 17:05:18,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:18,456 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:18,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:18,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:05:18,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:18,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 17:05:18,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289999037] [2020-09-24 17:05:18,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:18,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 17:05:18,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532498430] [2020-09-24 17:05:18,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 17:05:18,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:18,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 17:05:18,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:05:18,513 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 17:05:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:18,924 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 17:05:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 17:05:18,925 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 17:05:18,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:18,926 INFO L225 Difference]: With dead ends: 51 [2020-09-24 17:05:18,927 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 17:05:18,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:05:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 17:05:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 17:05:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 17:05:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 17:05:18,941 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 17:05:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:18,942 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 17:05:18,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 17:05:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 17:05:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 17:05:18,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:18,947 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:18,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:05:18,949 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:18,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:18,949 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 17:05:18,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:18,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708024437] [2020-09-24 17:05:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 17:05:19,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-24 17:05:19,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 17:05:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 17:05:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:05:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:19,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:19,673 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:19,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:19,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:19,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:19,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:19,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:19,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:20,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:20,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:20,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-24 17:05:20,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:20,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:20,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:20,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-09-24 17:05:20,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:21,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-24 17:05:21,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:21,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,301 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-24 17:05:21,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:21,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 17:05:21,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,594 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:21,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:05:21,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:21,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,700 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:21,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:05:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:21,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:21,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:21,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:21,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 17:05:21,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:21,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:21,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:21,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 17:05:21,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708024437] [2020-09-24 17:05:21,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:21,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 17:05:21,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146136231] [2020-09-24 17:05:21,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 17:05:21,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 17:05:21,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:05:21,843 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 17:05:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:22,216 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 17:05:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:05:22,217 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 17:05:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:22,220 INFO L225 Difference]: With dead ends: 55 [2020-09-24 17:05:22,221 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 17:05:22,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 17:05:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 17:05:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 17:05:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 17:05:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 17:05:22,235 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 17:05:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:22,235 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 17:05:22,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 17:05:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 17:05:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 17:05:22,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:22,239 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:22,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:05:22,240 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:22,240 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 17:05:22,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:22,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576203657] [2020-09-24 17:05:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:22,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 17:05:23,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-09-24 17:05:23,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:05:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 17:05:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:05:23,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:23,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:23,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:23,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:23,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:23,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:23,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:23,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-24 17:05:23,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,274 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:24,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-24 17:05:24,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,704 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-24 17:05:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:24,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:24,998 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:24,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:24,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 17:05:24,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:25,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:25,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:25,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-24 17:05:25,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:25,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:25,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:25,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,412 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:25,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 17:05:25,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:25,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:25,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:05:25,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:25,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:25,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:25,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:05:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:25,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:05:25,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 17:05:25,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576203657] [2020-09-24 17:05:25,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:25,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 17:05:25,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044995086] [2020-09-24 17:05:25,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 17:05:25,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:25,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 17:05:25,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:05:25,816 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 17:05:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:26,335 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 17:05:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 17:05:26,336 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 17:05:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:26,338 INFO L225 Difference]: With dead ends: 59 [2020-09-24 17:05:26,338 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 17:05:26,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 17:05:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 17:05:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 17:05:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 17:05:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 17:05:26,347 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 17:05:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:26,347 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 17:05:26,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 17:05:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 17:05:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:05:26,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:26,349 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:26,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:05:26,350 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:26,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 17:05:26,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:26,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693151662] [2020-09-24 17:05:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 17:05:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-09-24 17:05:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:05:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 17:05:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:28,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-09-24 17:05:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:28,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:28,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:28,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-24 17:05:28,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:29,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-24 17:05:29,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,589 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:29,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 17:05:29,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:29,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:29,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:29,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:29,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 17:05:29,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:29,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:29,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:30,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 17:05:30,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:30,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:30,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 17:05:30,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:30,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 17:05:30,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:30,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:05:30,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:30,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:30,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:30,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:30,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:30,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:30,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:05:30,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:30,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 17:05:30,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693151662] [2020-09-24 17:05:30,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:30,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 17:05:30,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828661788] [2020-09-24 17:05:30,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 17:05:30,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:30,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 17:05:30,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:05:30,685 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 17:05:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:31,353 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 17:05:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 17:05:31,354 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 17:05:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:31,355 INFO L225 Difference]: With dead ends: 63 [2020-09-24 17:05:31,355 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 17:05:31,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 17:05:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 17:05:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 17:05:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 17:05:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 17:05:31,363 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 17:05:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:31,363 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 17:05:31,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 17:05:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 17:05:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 17:05:31,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:31,365 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:31,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:05:31,365 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 17:05:31,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:31,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866244732] [2020-09-24 17:05:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,340 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 17:05:32,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-09-24 17:05:32,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 17:05:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 17:05:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:05:32,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:32,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:32,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:32,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:32,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:32,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:32,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-09-24 17:05:33,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:33,870 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:33,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-24 17:05:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:34,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-24 17:05:34,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:34,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:34,927 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:34,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:34,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-24 17:05:34,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:34,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:35,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,537 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:35,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-24 17:05:35,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:35,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 17:05:35,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:35,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:35,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:35,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:35,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 17:05:35,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:35,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:35,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,067 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:36,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 17:05:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:36,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 17:05:36,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:36,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:36,276 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:36,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:36,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:05:36,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 17:05:36,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866244732] [2020-09-24 17:05:36,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:36,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 17:05:36,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379970846] [2020-09-24 17:05:36,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 17:05:36,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:36,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 17:05:36,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:05:36,354 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 17:05:37,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:37,115 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 17:05:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 17:05:37,116 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 17:05:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:37,118 INFO L225 Difference]: With dead ends: 67 [2020-09-24 17:05:37,118 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 17:05:37,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 17:05:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 17:05:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 17:05:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 17:05:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 17:05:37,126 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 17:05:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:37,126 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 17:05:37,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 17:05:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 17:05:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 17:05:37,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:37,128 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:37,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:05:37,128 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:37,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:37,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 17:05:37,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:37,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696428885] [2020-09-24 17:05:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:37,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:38,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 17:05:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:38,220 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:38,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:38,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:38,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:38,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:39,144 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:39,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:05:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-09-24 17:05:39,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 17:05:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:39,948 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:39,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:39,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-09-24 17:05:39,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:39,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:39,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:40,584 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:40,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:40,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-09-24 17:05:40,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:40,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,122 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:41,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-24 17:05:41,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:41,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:41,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:41,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:41,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-24 17:05:41,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:41,888 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:41,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:41,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 17:05:41,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:41,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:42,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 17:05:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,365 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:42,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 17:05:42,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:42,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 17:05:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,664 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:42,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 17:05:42,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:42,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,787 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:42,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:05:42,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:42,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:05:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 17:05:42,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696428885] [2020-09-24 17:05:42,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:42,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 17:05:42,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429738287] [2020-09-24 17:05:42,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 17:05:42,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:42,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 17:05:42,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 17:05:42,981 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 17:05:43,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:43,873 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 17:05:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 17:05:43,874 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 17:05:43,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:43,875 INFO L225 Difference]: With dead ends: 71 [2020-09-24 17:05:43,875 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 17:05:43,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 17:05:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 17:05:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 17:05:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 17:05:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 17:05:43,883 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 17:05:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:43,884 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 17:05:43,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 17:05:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 17:05:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 17:05:43,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:43,885 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:43,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:05:43,885 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 17:05:43,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:43,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127086492] [2020-09-24 17:05:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 17:05:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-09-24 17:05:45,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 17:05:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 17:05:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 17:05:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:45,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:45,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:46,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 17:05:46,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-09-24 17:05:46,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 17:05:46,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:47,525 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:47,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:05:47,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-09-24 17:05:47,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 17:05:47,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:47,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:48,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:48,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:48,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-09-24 17:05:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:48,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:48,973 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-24 17:05:48,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:49,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:49,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:49,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:49,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-24 17:05:49,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:49,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:50,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:50,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:05:50,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-24 17:05:50,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:05:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:50,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:05:50,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:50,407 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:50,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:05:50,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 17:05:50,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:05:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:05:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:50,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:50,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:50,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:05:50,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:50,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 17:05:50,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:05:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:50,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:05:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:50,885 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:50,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:05:50,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:50,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 17:05:50,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:05:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:50,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:05:50,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:51,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:05:51,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 17:05:51,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:05:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:51,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:05:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:51,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:51,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:51,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:05:51,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 17:05:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:05:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:05:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:51,323 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:51,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:05:51,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:51,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 17:05:51,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:05:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:51,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:05:51,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:51,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:05:51,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:05:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:05:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:05:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-24 17:05:51,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127086492] [2020-09-24 17:05:51,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:05:51,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 17:05:51,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415785899] [2020-09-24 17:05:51,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 17:05:51,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:05:51,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 17:05:51,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 17:05:51,560 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 17:05:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:05:52,634 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 17:05:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 17:05:52,635 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 17:05:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:05:52,636 INFO L225 Difference]: With dead ends: 75 [2020-09-24 17:05:52,636 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 17:05:52,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 17:05:52,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 17:05:52,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 17:05:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 17:05:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 17:05:52,651 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 17:05:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:05:52,652 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 17:05:52,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 17:05:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 17:05:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 17:05:52,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:05:52,653 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:05:52,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:05:52,654 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:05:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:05:52,654 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 17:05:52,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:05:52,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489447260] [2020-09-24 17:05:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:05:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:52,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:54,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:54,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 17:05:54,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1448 [2020-09-24 17:05:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 17:05:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 17:05:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 17:05:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:54,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:05:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:05:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:05:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:05:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:05:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:05:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:05:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:55,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:55,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 17:05:55,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1342 [2020-09-24 17:05:55,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 17:05:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:55,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 17:05:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:56,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 17:05:56,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-09-24 17:05:56,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 17:05:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 17:05:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:57,725 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:57,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:05:57,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 17:05:57,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:57,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:05:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:57,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 17:05:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:58,514 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:58,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 17:05:58,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-09-24 17:05:58,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 17:05:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 17:05:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:59,165 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:59,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:05:59,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-09-24 17:05:59,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 17:05:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 17:05:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:59,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:05:59,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:05:59,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 17:05:59,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:05:59,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-24 17:05:59,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:05:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:05:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:05:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 17:05:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:05:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:05:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:05:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:06:00,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-24 17:06:00,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:06:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 17:06:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:00,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:00,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:06:00,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 17:06:00,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 17:06:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 17:06:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:00,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:00,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 17:06:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 17:06:00,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:06:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 17:06:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,032 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 17:06:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 17:06:01,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:06:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:06:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:01,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,203 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:06:01,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 17:06:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:06:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 17:06:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:01,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:06:01,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 17:06:01,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:06:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:06:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,465 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:06:01,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:06:01,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:06:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:06:01,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 17:06:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:01,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:01,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:06:01,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:06:01,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:01,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:06:01,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:01,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:06:01,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 17:06:01,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489447260] [2020-09-24 17:06:01,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:06:01,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 17:06:01,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990589528] [2020-09-24 17:06:01,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 17:06:01,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 17:06:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 17:06:01,680 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states. [2020-09-24 17:06:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:02,790 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-24 17:06:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 17:06:02,791 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-24 17:06:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:02,793 INFO L225 Difference]: With dead ends: 79 [2020-09-24 17:06:02,793 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 17:06:02,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=115, Invalid=1865, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 17:06:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 17:06:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 17:06:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 17:06:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-24 17:06:02,802 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 107 [2020-09-24 17:06:02,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:02,802 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-24 17:06:02,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-24 17:06:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-24 17:06:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 17:06:02,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:02,804 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:02,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:06:02,804 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:02,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1701157728, now seen corresponding path program 14 times [2020-09-24 17:06:02,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:02,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090571436] [2020-09-24 17:06:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:04,613 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:04,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 17:06:04,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-09-24 17:06:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 17:06:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 17:06:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 17:06:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:04,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:04,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:04,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:04,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:04,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:06:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking...