/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:30:22,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:30:22,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:30:22,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:30:22,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:30:22,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:30:22,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:30:22,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:30:22,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:30:22,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:30:22,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:30:22,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:30:22,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:30:22,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:30:22,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:30:22,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:30:22,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:30:22,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:30:22,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:30:22,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:30:22,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:30:22,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:30:22,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:30:22,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:30:22,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:30:22,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:30:22,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:30:22,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:30:22,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:30:22,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:30:22,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:30:22,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:30:22,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:30:22,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:30:22,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:30:22,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:30:22,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:30:22,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:30:22,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:30:22,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:30:22,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:30:22,255 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 [2020-10-13 04:30:22,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:30:22,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:30:22,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:30:22,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:30:22,279 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:30:22,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:30:22,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:30:22,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:30:22,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:30:22,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:30:22,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:30:22,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:30:22,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:30:22,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:30:22,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:30:22,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:30:22,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:30:22,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:30:22,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:30:22,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:30:22,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:30:22,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:30:22,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:30:22,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:30:22,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:30:22,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:30:22,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:30:22,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:30:22,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:30:22,284 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 04:30:22,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:30:22,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:30:22,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:30:22,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:30:22,655 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:30:22,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum3.i [2020-10-13 04:30:22,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2415cba87/72e86665dee3489d8a989c109cc65020/FLAG6259a78f7 [2020-10-13 04:30:23,163 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:30:23,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum3.i [2020-10-13 04:30:23,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2415cba87/72e86665dee3489d8a989c109cc65020/FLAG6259a78f7 [2020-10-13 04:30:23,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2415cba87/72e86665dee3489d8a989c109cc65020 [2020-10-13 04:30:23,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:30:23,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:30:23,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:23,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:30:23,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:30:23,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:23,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a856ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23, skipping insertion in model container [2020-10-13 04:30:23,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:23,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:30:23,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:30:23,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:23,788 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:30:23,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:30:23,831 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:30:23,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23 WrapperNode [2020-10-13 04:30:23,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:30:23,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:30:23,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:30:23,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:30:23,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:23,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:23,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:23,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:24,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:24,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:24,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2020-10-13 04:30:24,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:30:24,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:30:24,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:30:24,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:30:24,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (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 [2020-10-13 04:30:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:30:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:30:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-13 04:30:24,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:30:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:30:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:30:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-13 04:30:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:30:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:30:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:30:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:30:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:30:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:30:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:30:24,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:30:24,484 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:30:24,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:24 BoogieIcfgContainer [2020-10-13 04:30:24,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:30:24,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:30:24,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:30:24,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:30:24,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:23" (1/3) ... [2020-10-13 04:30:24,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de524e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:24, skipping insertion in model container [2020-10-13 04:30:24,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (2/3) ... [2020-10-13 04:30:24,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de524e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:24, skipping insertion in model container [2020-10-13 04:30:24,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:24" (3/3) ... [2020-10-13 04:30:24,500 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum3.i [2020-10-13 04:30:24,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:30:24,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:30:24,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:30:24,577 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:30:24,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:30:24,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:30:24,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:30:24,578 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:30:24,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:30:24,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:30:24,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:30:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 04:30:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:24,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:24,613 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:24,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:24,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 04:30:24,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:24,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434470207] [2020-10-13 04:30:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:25,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:26,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:26,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:30:26,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-13 04:30:26,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 04:30:26,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:30:26,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:26,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:26,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 04:30:26,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:26,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:26,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:26,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:26,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:26,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:26,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:26,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:26,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:26,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:26,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:26,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 04:30:26,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 04:30:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 04:30:26,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434470207] [2020-10-13 04:30:26,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:26,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 04:30:26,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608242950] [2020-10-13 04:30:26,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:30:26,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:26,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:30:26,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:26,529 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 04:30:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:26,637 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 04:30:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:30:26,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 04:30:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:26,649 INFO L225 Difference]: With dead ends: 54 [2020-10-13 04:30:26,649 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 04:30:26,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:30:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 04:30:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 04:30:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 04:30:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 04:30:26,700 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 04:30:26,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:26,700 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 04:30:26,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:30:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 04:30:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 04:30:26,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:26,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:26,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:30:26,704 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:26,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:26,704 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 04:30:26,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:26,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764629950] [2020-10-13 04:30:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:28,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 04:30:28,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:30:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1382 [2020-10-13 04:30:28,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 04:30:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:28,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:28,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:30:28,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:28,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:28,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:28,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 04:30:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:28,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:28,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:28,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:30:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:28,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 04:30:28,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:30:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:28,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 04:30:28,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764629950] [2020-10-13 04:30:28,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:28,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:28,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011575938] [2020-10-13 04:30:28,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:28,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:28,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:28,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:28,255 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 04:30:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:28,385 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 04:30:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:28,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 04:30:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:28,388 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:30:28,389 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 04:30:28,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:28,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 04:30:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 04:30:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 04:30:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 04:30:28,405 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 04:30:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:28,406 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 04:30:28,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 04:30:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 04:30:28,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:28,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:28,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:30:28,410 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:28,411 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 04:30:28,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:28,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920035723] [2020-10-13 04:30:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:31,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 04:30:31,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:31,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2854 [2020-10-13 04:30:31,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:30:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:31,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:31,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:31,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:31,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:31,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:30:31,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:30:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:30:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:31,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:31,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:31,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:30:31,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:31,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:31,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:31,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:31,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 04:30:31,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920035723] [2020-10-13 04:30:31,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:31,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:31,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876759480] [2020-10-13 04:30:31,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:31,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:31,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:31,418 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 04:30:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:31,499 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 04:30:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:31,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 04:30:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:31,501 INFO L225 Difference]: With dead ends: 42 [2020-10-13 04:30:31,501 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 04:30:31,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 04:30:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 04:30:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 04:30:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 04:30:31,509 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 04:30:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:31,511 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 04:30:31,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 04:30:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 04:30:31,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:31,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:31,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:30:31,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -107343225, now seen corresponding path program 1 times [2020-10-13 04:30:31,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:31,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070802360] [2020-10-13 04:30:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:36,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 04:30:36,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4570 [2020-10-13 04:30:36,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:30:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 04:30:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:36,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:36,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:36,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:36,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 04:30:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:36,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:36,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:36,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:36,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:36,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:36,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 04:30:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:36,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:30:36,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:30:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:36,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:30:36,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:30:36,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070802360] [2020-10-13 04:30:36,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:30:36,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 04:30:36,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897129843] [2020-10-13 04:30:36,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 04:30:36,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:36,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 04:30:36,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:36,231 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 04:30:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:36,307 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 04:30:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 04:30:36,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 04:30:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:36,309 INFO L225 Difference]: With dead ends: 50 [2020-10-13 04:30:36,309 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 04:30:36,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 04:30:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 04:30:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 04:30:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 04:30:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 04:30:36,316 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 04:30:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:36,317 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 04:30:36,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 04:30:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 04:30:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 04:30:36,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:36,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:36,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:30:36,319 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:36,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 04:30:36,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:36,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839602664] [2020-10-13 04:30:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 04:30:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:30:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 04:30:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:41,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:41,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:41,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:30:41,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:41,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-13 04:30:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:41,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:41,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:41,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:30:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:41,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:41,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:41,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:41,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:30:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:41,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:41,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:41,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 04:30:41,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839602664] [2020-10-13 04:30:41,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:41,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:41,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764355483] [2020-10-13 04:30:41,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:41,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:41,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:41,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:41,484 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 04:30:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:41,578 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-13 04:30:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:41,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 04:30:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:41,581 INFO L225 Difference]: With dead ends: 45 [2020-10-13 04:30:41,581 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:30:41,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:30:41,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 04:30:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:30:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 04:30:41,595 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 04:30:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:41,597 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 04:30:41,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 04:30:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 04:30:41,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:41,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:41,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:30:41,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:41,600 INFO L82 PathProgramCache]: Analyzing trace with hash 319829223, now seen corresponding path program 2 times [2020-10-13 04:30:41,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:41,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226352464] [2020-10-13 04:30:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:41,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 04:30:46,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:30:46,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:46,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:46,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:46,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:46,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:46,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:46,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:46,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:46,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:46,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 04:30:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:46,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:30:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:46,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:46,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 04:30:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:46,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:46,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:46,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:46,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:46,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:46,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:30:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:46,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:46,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:46,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:46,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:46,718 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 04:30:46,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226352464] [2020-10-13 04:30:46,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:46,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:46,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373486034] [2020-10-13 04:30:46,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:46,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:46,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:46,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:46,721 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 04:30:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:46,796 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-13 04:30:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:46,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-13 04:30:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:46,798 INFO L225 Difference]: With dead ends: 56 [2020-10-13 04:30:46,798 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 04:30:46,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 04:30:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 04:30:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 04:30:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 04:30:46,804 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 44 [2020-10-13 04:30:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:46,805 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 04:30:46,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 04:30:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 04:30:46,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:46,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:46,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:30:46,806 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:46,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2137993655, now seen corresponding path program 3 times [2020-10-13 04:30:46,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:46,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054476075] [2020-10-13 04:30:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 04:30:51,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:51,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:30:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:30:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:30:51,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:51,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:51,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:51,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:51,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:51,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:51,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:30:51,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:51,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:51,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:30:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:51,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:51,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:51,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:30:51,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 04:30:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:30:51,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:30:51,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:51,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:30:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:51,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:51,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 04:30:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 04:30:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:30:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 04:30:51,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054476075] [2020-10-13 04:30:51,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:51,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 04:30:51,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205386683] [2020-10-13 04:30:51,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 04:30:51,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:51,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 04:30:51,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 04:30:51,990 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 04:30:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:52,164 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-13 04:30:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 04:30:52,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-13 04:30:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:52,166 INFO L225 Difference]: With dead ends: 57 [2020-10-13 04:30:52,166 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 04:30:52,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:30:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 04:30:52,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 04:30:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 04:30:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 04:30:52,181 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 46 [2020-10-13 04:30:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:52,182 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 04:30:52,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 04:30:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 04:30:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 04:30:52,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:52,187 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:52,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:30:52,188 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:52,190 INFO L82 PathProgramCache]: Analyzing trace with hash -629434041, now seen corresponding path program 4 times [2020-10-13 04:30:52,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:52,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617038645] [2020-10-13 04:30:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:53,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:57,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 04:30:57,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:30:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:30:57,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:30:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:30:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:30:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:57,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:30:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:30:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:30:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:30:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 04:30:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:57,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:57,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:57,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:57,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:30:57,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:57,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:57,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 04:30:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:57,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:57,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 04:30:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:57,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:57,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 04:30:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:30:57,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:30:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:30:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:30:57,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:30:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:30:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:30:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:30:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:30:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 04:30:57,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617038645] [2020-10-13 04:30:57,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:30:57,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:30:57,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683984629] [2020-10-13 04:30:57,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:30:57,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:30:57,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:30:57,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:57,333 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 04:30:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:30:57,422 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 04:30:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:30:57,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 04:30:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:30:57,423 INFO L225 Difference]: With dead ends: 62 [2020-10-13 04:30:57,423 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 04:30:57,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:30:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 04:30:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 04:30:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 04:30:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 04:30:57,433 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 04:30:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:30:57,434 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 04:30:57,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:30:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 04:30:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 04:30:57,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:30:57,438 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:30:57,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:30:57,438 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:30:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:30:57,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1887809705, now seen corresponding path program 5 times [2020-10-13 04:30:57,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:30:57,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586985239] [2020-10-13 04:30:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:30:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:30:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:30:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:02,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 04:31:02,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:31:02,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:31:02,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:31:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 04:31:02,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:31:02,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:02,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:02,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:02,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:31:02,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:31:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:31:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:31:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:02,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:31:02,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:02,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:31:02,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 04:31:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:02,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:02,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:31:02,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:02,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 04:31:02,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:02,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:02,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 04:31:02,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586985239] [2020-10-13 04:31:02,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:02,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:31:02,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080048303] [2020-10-13 04:31:02,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:31:02,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:02,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:31:02,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:31:02,581 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 04:31:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:02,672 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2020-10-13 04:31:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:31:02,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 04:31:02,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:02,674 INFO L225 Difference]: With dead ends: 55 [2020-10-13 04:31:02,674 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 04:31:02,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:31:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 04:31:02,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 04:31:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:31:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 04:31:02,683 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-13 04:31:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:02,685 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 04:31:02,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:31:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 04:31:02,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 04:31:02,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:02,686 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:02,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:31:02,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:02,687 INFO L82 PathProgramCache]: Analyzing trace with hash 496908455, now seen corresponding path program 6 times [2020-10-13 04:31:02,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:02,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063881295] [2020-10-13 04:31:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:07,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 04:31:07,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 04:31:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:31:07,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:31:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 04:31:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:31:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:07,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:07,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:07,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:07,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:07,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:07,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:07,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:07,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:31:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:07,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:07,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:31:07,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:07,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:07,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:07,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:07,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:07,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 04:31:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:07,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:31:07,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 04:31:07,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:07,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:07,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 04:31:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:07,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:07,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 04:31:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:31:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:31:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:31:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 04:31:07,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063881295] [2020-10-13 04:31:07,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:07,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 04:31:07,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81381116] [2020-10-13 04:31:07,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:31:07,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:07,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:31:07,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:31:07,796 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 04:31:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:07,920 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-13 04:31:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:31:07,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 04:31:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:07,922 INFO L225 Difference]: With dead ends: 67 [2020-10-13 04:31:07,922 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 04:31:07,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 04:31:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 04:31:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 04:31:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 04:31:07,932 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 56 [2020-10-13 04:31:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:07,933 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 04:31:07,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:31:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 04:31:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 04:31:07,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:07,937 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:07,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:31:07,937 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:07,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835483, now seen corresponding path program 7 times [2020-10-13 04:31:07,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:07,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26605108] [2020-10-13 04:31:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:12,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:12,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 04:31:12,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:31:12,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 04:31:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:13,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:13,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:13,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:13,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:13,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:31:13,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:31:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:13,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:13,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:13,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:31:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:13,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:13,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:13,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:13,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:13,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 04:31:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:13,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:13,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:31:13,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:31:13,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:13,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 04:31:13,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26605108] [2020-10-13 04:31:13,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:13,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:13,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418310592] [2020-10-13 04:31:13,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:13,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:13,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:13,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:13,117 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 04:31:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:13,208 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-13 04:31:13,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:13,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 04:31:13,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:13,210 INFO L225 Difference]: With dead ends: 61 [2020-10-13 04:31:13,210 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:31:13,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:31:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 04:31:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 04:31:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 04:31:13,221 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 04:31:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:13,221 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 04:31:13,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 04:31:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 04:31:13,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:13,222 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:13,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:31:13,223 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:13,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1823092003, now seen corresponding path program 8 times [2020-10-13 04:31:13,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:13,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766587497] [2020-10-13 04:31:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:13,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:18,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 04:31:18,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:31:18,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 04:31:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:18,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:18,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:18,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:18,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:18,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:18,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:18,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:18,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:31:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:31:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 04:31:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:18,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:18,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:31:18,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 04:31:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 04:31:18,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:31:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 04:31:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 04:31:18,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766587497] [2020-10-13 04:31:18,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:18,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:18,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687232256] [2020-10-13 04:31:18,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:18,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:18,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:18,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:18,383 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 04:31:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:18,511 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-13 04:31:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:18,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 04:31:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:18,513 INFO L225 Difference]: With dead ends: 75 [2020-10-13 04:31:18,513 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 04:31:18,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:31:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 04:31:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 04:31:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 04:31:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 04:31:18,519 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 64 [2020-10-13 04:31:18,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:18,519 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 04:31:18,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:18,520 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 04:31:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 04:31:18,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:18,521 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:18,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:31:18,521 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1678153055, now seen corresponding path program 9 times [2020-10-13 04:31:18,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:18,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170278116] [2020-10-13 04:31:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:23,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 04:31:23,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:31:23,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 04:31:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:31:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:23,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:23,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:23,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:23,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:23,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 04:31:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:23,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 04:31:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:23,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:23,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:23,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 04:31:23,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 04:31:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:23,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:23,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:23,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:23,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 04:31:23,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:23,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 04:31:23,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170278116] [2020-10-13 04:31:23,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:23,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 04:31:23,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159300061] [2020-10-13 04:31:23,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 04:31:23,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:23,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 04:31:23,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:23,667 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 04:31:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:23,767 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-13 04:31:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:31:23,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 04:31:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:23,769 INFO L225 Difference]: With dead ends: 80 [2020-10-13 04:31:23,769 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 04:31:23,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:31:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 04:31:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 04:31:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:31:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 04:31:23,776 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 04:31:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:23,776 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 04:31:23,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 04:31:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 04:31:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 04:31:23,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:23,778 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:23,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:31:23,778 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:23,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:23,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1920651901, now seen corresponding path program 10 times [2020-10-13 04:31:23,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:23,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151502213] [2020-10-13 04:31:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:23,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:28,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 04:31:28,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:28,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:31:28,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 04:31:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:28,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:28,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:28,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:31:28,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:28,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:28,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:28,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:28,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:28,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:31:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:28,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:28,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 04:31:28,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:28,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 04:31:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:28,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 04:31:28,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:31:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 04:31:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 04:31:28,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151502213] [2020-10-13 04:31:28,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:28,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:28,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600442636] [2020-10-13 04:31:28,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:28,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:28,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:28,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:28,962 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 04:31:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:29,120 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-13 04:31:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:29,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 04:31:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:29,121 INFO L225 Difference]: With dead ends: 81 [2020-10-13 04:31:29,121 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 04:31:29,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:31:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 04:31:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 04:31:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 04:31:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 04:31:29,128 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 04:31:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:29,128 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 04:31:29,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 04:31:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 04:31:29,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:29,130 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:29,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:31:29,130 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1621058305, now seen corresponding path program 11 times [2020-10-13 04:31:29,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:29,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382128914] [2020-10-13 04:31:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:34,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 04:31:34,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:34,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:31:34,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:34,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:34,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 04:31:34,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:34,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:31:34,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:34,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:34,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:34,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:34,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:34,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:34,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:34,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:34,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:31:34,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:31:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 04:31:34,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 04:31:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:34,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:34,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 04:31:34,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 04:31:34,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382128914] [2020-10-13 04:31:34,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:34,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:34,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258174131] [2020-10-13 04:31:34,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:34,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:34,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:34,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:34,330 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 04:31:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:34,420 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-10-13 04:31:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:34,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-13 04:31:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:34,422 INFO L225 Difference]: With dead ends: 73 [2020-10-13 04:31:34,422 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:31:34,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:31:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 04:31:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 04:31:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 04:31:34,435 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 78 [2020-10-13 04:31:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:34,436 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 04:31:34,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:34,436 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 04:31:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 04:31:34,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:34,437 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:34,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:31:34,437 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:34,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:34,438 INFO L82 PathProgramCache]: Analyzing trace with hash 940803327, now seen corresponding path program 12 times [2020-10-13 04:31:34,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:34,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821266256] [2020-10-13 04:31:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 04:31:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:31:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:31:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:31:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:39,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:39,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:39,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:39,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:39,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:39,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:39,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:39,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:39,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 04:31:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:39,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:39,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:39,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:39,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 04:31:39,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:39,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 04:31:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:39,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:39,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:39,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:39,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:39,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:39,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:39,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:39,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 04:31:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:39,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:31:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:39,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821266256] [2020-10-13 04:31:39,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:39,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:31:39,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192587738] [2020-10-13 04:31:39,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:31:39,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:39,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:31:39,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:39,638 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 04:31:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:39,733 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-13 04:31:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:31:39,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-13 04:31:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:39,735 INFO L225 Difference]: With dead ends: 90 [2020-10-13 04:31:39,735 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:31:39,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:31:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:31:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 04:31:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 04:31:39,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 04:31:39,754 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 04:31:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:39,754 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 04:31:39,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:31:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 04:31:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 04:31:39,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:39,756 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:39,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:31:39,756 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:39,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1187343007, now seen corresponding path program 13 times [2020-10-13 04:31:39,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:39,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849351135] [2020-10-13 04:31:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:44,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:44,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:44,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:44,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 04:31:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:44,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:44,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 04:31:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:44,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 04:31:44,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849351135] [2020-10-13 04:31:44,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:44,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:44,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501090672] [2020-10-13 04:31:44,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:44,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:44,941 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 04:31:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:45,064 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-10-13 04:31:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:45,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 04:31:45,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:45,066 INFO L225 Difference]: With dead ends: 77 [2020-10-13 04:31:45,066 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 04:31:45,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 04:31:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 04:31:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 04:31:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 04:31:45,077 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 04:31:45,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:45,078 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 04:31:45,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:45,078 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 04:31:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 04:31:45,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:45,082 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:45,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:31:45,082 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:45,083 INFO L82 PathProgramCache]: Analyzing trace with hash -693395617, now seen corresponding path program 14 times [2020-10-13 04:31:45,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:45,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8252450] [2020-10-13 04:31:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:50,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 04:31:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 04:31:50,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 04:31:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:50,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:50,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:50,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:31:50,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:31:50,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 04:31:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 04:31:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:31:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 04:31:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:50,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 04:31:50,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 04:31:50,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 04:31:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-13 04:31:50,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8252450] [2020-10-13 04:31:50,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:50,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:50,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138310727] [2020-10-13 04:31:50,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:50,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:50,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:50,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:50,287 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 04:31:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:50,467 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-10-13 04:31:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:50,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 04:31:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:50,468 INFO L225 Difference]: With dead ends: 95 [2020-10-13 04:31:50,468 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 04:31:50,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:31:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 04:31:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 04:31:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 04:31:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 04:31:50,478 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 84 [2020-10-13 04:31:50,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:50,480 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 04:31:50,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 04:31:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 04:31:50,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:50,483 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:50,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:31:50,485 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:50,485 INFO L82 PathProgramCache]: Analyzing trace with hash -413745699, now seen corresponding path program 15 times [2020-10-13 04:31:50,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:50,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141500504] [2020-10-13 04:31:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:55,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 04:31:55,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:31:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:31:55,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 04:31:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:31:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:31:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:55,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:31:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:55,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:31:55,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:31:55,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:31:55,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:55,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:31:55,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:55,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:55,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 04:31:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:55,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:55,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 04:31:55,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:55,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:55,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:55,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:55,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 04:31:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:55,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:55,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:31:55,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:55,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 04:31:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:31:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:31:55,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:31:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 04:31:55,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:31:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:31:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:31:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:31:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:31:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:31:55,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141500504] [2020-10-13 04:31:55,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:31:55,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 04:31:55,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105687674] [2020-10-13 04:31:55,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 04:31:55,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:31:55,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 04:31:55,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:55,686 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 04:31:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:31:55,809 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-13 04:31:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:31:55,810 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 04:31:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:31:55,811 INFO L225 Difference]: With dead ends: 100 [2020-10-13 04:31:55,811 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 04:31:55,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:31:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 04:31:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 04:31:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:31:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 04:31:55,825 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 04:31:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:31:55,826 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 04:31:55,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 04:31:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 04:31:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 04:31:55,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:31:55,830 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:31:55,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:31:55,831 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:31:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:31:55,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1367983169, now seen corresponding path program 16 times [2020-10-13 04:31:55,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:31:55,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341066105] [2020-10-13 04:31:55,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:31:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:31:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:31:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 04:32:00,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:32:00,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:32:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:32:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:00,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:00,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 04:32:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:00,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 04:32:00,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:32:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 04:32:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:00,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:00,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:00,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 04:32:00,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:32:00,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:00,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:00,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 04:32:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:01,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:01,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:01,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:32:01,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:32:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 04:32:01,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341066105] [2020-10-13 04:32:01,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:01,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:32:01,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367869098] [2020-10-13 04:32:01,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:32:01,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:32:01,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:32:01,033 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 04:32:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:01,142 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-10-13 04:32:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:32:01,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 04:32:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:01,143 INFO L225 Difference]: With dead ends: 102 [2020-10-13 04:32:01,143 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 04:32:01,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:32:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 04:32:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 04:32:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:32:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 04:32:01,149 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 04:32:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:01,149 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 04:32:01,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:32:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 04:32:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 04:32:01,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:01,151 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:01,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:32:01,151 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash 732809505, now seen corresponding path program 17 times [2020-10-13 04:32:01,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:01,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460078966] [2020-10-13 04:32:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:06,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 04:32:06,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:32:06,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:32:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-13 04:32:06,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:32:06,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:06,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:06,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:06,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:06,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:06,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:06,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 04:32:06,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:32:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:06,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 04:32:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 04:32:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:06,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:06,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 04:32:06,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:32:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 04:32:06,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460078966] [2020-10-13 04:32:06,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:06,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:32:06,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313388030] [2020-10-13 04:32:06,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:32:06,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:06,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:32:06,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:32:06,390 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 04:32:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:06,512 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-13 04:32:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:32:06,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 04:32:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:06,513 INFO L225 Difference]: With dead ends: 87 [2020-10-13 04:32:06,513 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 04:32:06,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:32:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 04:32:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 04:32:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 04:32:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 04:32:06,519 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 94 [2020-10-13 04:32:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:06,519 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 04:32:06,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:32:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 04:32:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 04:32:06,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:06,521 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:06,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:32:06,521 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:06,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1132319519, now seen corresponding path program 18 times [2020-10-13 04:32:06,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:06,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831394089] [2020-10-13 04:32:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 04:32:11,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:32:11,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:32:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 04:32:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:32:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:11,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:11,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:11,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:11,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 04:32:11,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:32:11,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:11,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 04:32:11,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:32:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:11,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 04:32:11,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:32:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 04:32:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:11,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 04:32:11,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:11,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 04:32:11,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:11,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:11,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:32:11,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:11,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 04:32:11,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831394089] [2020-10-13 04:32:11,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:11,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:32:11,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281998236] [2020-10-13 04:32:11,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:32:11,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:32:11,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:32:11,688 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 04:32:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:11,879 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 04:32:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:32:11,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-10-13 04:32:11,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:11,882 INFO L225 Difference]: With dead ends: 107 [2020-10-13 04:32:11,882 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 04:32:11,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:32:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 04:32:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 04:32:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:32:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 04:32:11,890 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 96 [2020-10-13 04:32:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:11,890 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 04:32:11,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:32:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 04:32:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 04:32:11,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:11,891 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:11,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:32:11,891 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1836679011, now seen corresponding path program 19 times [2020-10-13 04:32:11,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:11,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711330571] [2020-10-13 04:32:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:11,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 04:32:16,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:16,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 04:32:16,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:16,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 04:32:16,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:16,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:16,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:32:16,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:16,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:16,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 04:32:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:17,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:17,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:32:17,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:32:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 04:32:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 04:32:17,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711330571] [2020-10-13 04:32:17,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:17,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:17,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116518736] [2020-10-13 04:32:17,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:17,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:17,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:17,130 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 04:32:17,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:17,357 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 04:32:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:17,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 04:32:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:17,359 INFO L225 Difference]: With dead ends: 111 [2020-10-13 04:32:17,359 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:32:17,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:32:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:32:17,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 04:32:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 04:32:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 04:32:17,365 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 04:32:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:17,366 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 04:32:17,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 04:32:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 04:32:17,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:17,367 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:17,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:32:17,367 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1001531493, now seen corresponding path program 20 times [2020-10-13 04:32:17,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:17,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007645706] [2020-10-13 04:32:17,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 04:32:22,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:22,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:32:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:22,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:22,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:22,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 04:32:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 04:32:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:22,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 04:32:22,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:22,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 04:32:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:22,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:22,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 04:32:22,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-13 04:32:22,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007645706] [2020-10-13 04:32:22,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:22,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:22,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101289523] [2020-10-13 04:32:22,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:22,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:22,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:22,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:22,637 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 04:32:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:22,744 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 04:32:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:22,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 04:32:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:22,746 INFO L225 Difference]: With dead ends: 116 [2020-10-13 04:32:22,746 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:32:22,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:32:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 04:32:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 04:32:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 04:32:22,751 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 04:32:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:22,751 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 04:32:22,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 04:32:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 04:32:22,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:22,752 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:22,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:32:22,753 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1674731773, now seen corresponding path program 21 times [2020-10-13 04:32:22,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:22,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897456992] [2020-10-13 04:32:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 04:32:27,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 04:32:27,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 04:32:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 04:32:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:32:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:27,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:27,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:27,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 04:32:27,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:27,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:27,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:27,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:27,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:28,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:28,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 04:32:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:28,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 04:32:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:28,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897456992] [2020-10-13 04:32:28,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:28,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 04:32:28,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161338527] [2020-10-13 04:32:28,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 04:32:28,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:28,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 04:32:28,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:28,077 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 04:32:28,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:28,185 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-13 04:32:28,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 04:32:28,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 04:32:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:28,186 INFO L225 Difference]: With dead ends: 99 [2020-10-13 04:32:28,187 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 04:32:28,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 04:32:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 04:32:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 04:32:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 04:32:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 04:32:28,193 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 04:32:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:28,193 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 04:32:28,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 04:32:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 04:32:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 04:32:28,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:28,195 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:28,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:32:28,195 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:28,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash 505529339, now seen corresponding path program 22 times [2020-10-13 04:32:28,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:28,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038610707] [2020-10-13 04:32:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 04:32:33,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 04:32:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:33,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 04:32:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 04:32:33,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 04:32:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 04:32:33,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 04:32:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:33,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 04:32:33,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:33,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 04:32:33,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038610707] [2020-10-13 04:32:33,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:33,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:33,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656281871] [2020-10-13 04:32:33,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:33,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:33,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:33,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:33,506 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 04:32:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:33,627 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2020-10-13 04:32:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:33,627 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 04:32:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:33,628 INFO L225 Difference]: With dead ends: 122 [2020-10-13 04:32:33,628 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 04:32:33,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 04:32:33,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 04:32:33,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 04:32:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 04:32:33,638 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 04:32:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:33,638 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 04:32:33,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 04:32:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 04:32:33,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:33,642 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:33,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:32:33,642 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:33,643 INFO L82 PathProgramCache]: Analyzing trace with hash -341914531, now seen corresponding path program 23 times [2020-10-13 04:32:33,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:33,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337506964] [2020-10-13 04:32:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 04:32:38,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 04:32:38,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 04:32:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:32:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:38,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:38,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 04:32:38,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 04:32:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:38,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:38,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 04:32:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2020-10-13 04:32:38,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337506964] [2020-10-13 04:32:38,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:38,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:38,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743703582] [2020-10-13 04:32:38,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:38,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:38,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:38,969 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 04:32:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:39,051 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-13 04:32:39,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:39,051 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 04:32:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:39,052 INFO L225 Difference]: With dead ends: 103 [2020-10-13 04:32:39,053 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 04:32:39,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 04:32:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 04:32:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 04:32:39,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 04:32:39,058 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 04:32:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:39,059 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 04:32:39,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 04:32:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 04:32:39,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:39,060 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:39,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 04:32:39,060 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:39,060 INFO L82 PathProgramCache]: Analyzing trace with hash -461318309, now seen corresponding path program 24 times [2020-10-13 04:32:39,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:39,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541811695] [2020-10-13 04:32:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 04:32:44,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 04:32:44,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 04:32:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:44,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:44,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:44,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:44,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:44,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:44,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 04:32:44,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:32:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 04:32:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 04:32:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 04:32:44,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 04:32:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:44,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 04:32:44,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 04:32:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 04:32:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-13 04:32:44,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541811695] [2020-10-13 04:32:44,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:44,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:32:44,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550552807] [2020-10-13 04:32:44,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:32:44,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:44,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:32:44,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:32:44,344 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 04:32:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:44,577 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-10-13 04:32:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:32:44,578 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-10-13 04:32:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:44,579 INFO L225 Difference]: With dead ends: 127 [2020-10-13 04:32:44,579 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 04:32:44,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:32:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 04:32:44,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 04:32:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 04:32:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 04:32:44,591 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 116 [2020-10-13 04:32:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:44,591 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 04:32:44,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:32:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 04:32:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 04:32:44,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:44,593 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:44,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 04:32:44,594 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash 862348761, now seen corresponding path program 25 times [2020-10-13 04:32:44,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:44,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743346490] [2020-10-13 04:32:44,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 04:32:49,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:49,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:32:49,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:32:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:49,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:49,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:49,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 04:32:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:49,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:49,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 04:32:49,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:49,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:49,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:49,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:32:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 04:32:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 04:32:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 04:32:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 04:32:49,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743346490] [2020-10-13 04:32:49,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:49,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:49,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499336364] [2020-10-13 04:32:49,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:49,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:49,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:49,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:49,898 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 04:32:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:50,026 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-10-13 04:32:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:50,026 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 04:32:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:50,027 INFO L225 Difference]: With dead ends: 132 [2020-10-13 04:32:50,027 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 04:32:50,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 04:32:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 04:32:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 04:32:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 04:32:50,034 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 04:32:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:50,034 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 04:32:50,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 04:32:50,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 04:32:50,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:50,036 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:50,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 04:32:50,036 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:50,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash 767941563, now seen corresponding path program 26 times [2020-10-13 04:32:50,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:50,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914266616] [2020-10-13 04:32:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 04:32:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:32:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 04:32:55,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 04:32:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:55,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:32:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:32:55,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:32:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:32:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:55,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 04:32:55,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:32:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 04:32:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:55,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:32:55,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 04:32:55,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:32:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:32:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:32:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 04:32:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:32:55,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 04:32:55,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:32:55,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 04:32:55,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:32:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:32:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 04:32:55,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:32:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:32:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-13 04:32:55,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914266616] [2020-10-13 04:32:55,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:32:55,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:32:55,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344871051] [2020-10-13 04:32:55,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:32:55,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:32:55,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:32:55,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:32:55,332 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 04:32:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:32:55,577 INFO L93 Difference]: Finished difference Result 133 states and 143 transitions. [2020-10-13 04:32:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:32:55,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-10-13 04:32:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:32:55,578 INFO L225 Difference]: With dead ends: 133 [2020-10-13 04:32:55,578 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 04:32:55,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:32:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 04:32:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 04:32:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 04:32:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 04:32:55,587 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 124 [2020-10-13 04:32:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:32:55,588 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 04:32:55,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:32:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 04:32:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 04:32:55,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:32:55,589 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:32:55,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 04:32:55,590 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:32:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:32:55,590 INFO L82 PathProgramCache]: Analyzing trace with hash -70196679, now seen corresponding path program 27 times [2020-10-13 04:32:55,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:32:55,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335966351] [2020-10-13 04:32:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:32:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:32:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:32:55,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:00,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 04:33:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 04:33:00,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 04:33:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 04:33:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 04:33:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:00,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:00,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:00,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:00,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:00,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:00,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:33:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:00,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:00,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:33:00,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 04:33:00,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:33:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:00,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:33:00,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:00,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 04:33:00,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 04:33:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:00,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:33:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 04:33:00,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:33:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 04:33:00,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335966351] [2020-10-13 04:33:00,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:00,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 04:33:00,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809001812] [2020-10-13 04:33:00,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 04:33:00,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:00,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 04:33:00,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:33:00,988 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 04:33:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:01,066 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-13 04:33:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 04:33:01,067 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 04:33:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:01,068 INFO L225 Difference]: With dead ends: 115 [2020-10-13 04:33:01,068 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:33:01,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:33:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:33:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 04:33:01,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 04:33:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 04:33:01,074 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 04:33:01,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:01,075 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 04:33:01,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 04:33:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 04:33:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 04:33:01,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:01,076 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:01,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 04:33:01,077 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash -203766217, now seen corresponding path program 28 times [2020-10-13 04:33:01,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:01,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683935915] [2020-10-13 04:33:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:33:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:06,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:06,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:33:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:33:06,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 04:33:06,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:33:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:33:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 04:33:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 04:33:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:06,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 04:33:06,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 04:33:06,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:33:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:06,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2020-10-13 04:33:06,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683935915] [2020-10-13 04:33:06,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:06,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:33:06,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819072212] [2020-10-13 04:33:06,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:33:06,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:06,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:33:06,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:06,441 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 04:33:06,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:06,718 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2020-10-13 04:33:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:33:06,721 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 04:33:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:06,721 INFO L225 Difference]: With dead ends: 141 [2020-10-13 04:33:06,722 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 04:33:06,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 04:33:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 04:33:06,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 04:33:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:33:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 04:33:06,734 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 04:33:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:06,735 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 04:33:06,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:33:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 04:33:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 04:33:06,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:06,736 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:06,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 04:33:06,737 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1624841909, now seen corresponding path program 29 times [2020-10-13 04:33:06,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:06,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28727835] [2020-10-13 04:33:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:33:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:11,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:11,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:11,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:11,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:11,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 04:33:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:11,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:11,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:11,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 04:33:11,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:11,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:11,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 04:33:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:12,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:12,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 04:33:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 04:33:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:12,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 04:33:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:12,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:12,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2020-10-13 04:33:12,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28727835] [2020-10-13 04:33:12,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:12,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:33:12,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946517139] [2020-10-13 04:33:12,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:33:12,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:12,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:33:12,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:12,145 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 04:33:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:12,229 INFO L93 Difference]: Finished difference Result 146 states and 154 transitions. [2020-10-13 04:33:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:33:12,230 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 138 [2020-10-13 04:33:12,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:12,231 INFO L225 Difference]: With dead ends: 146 [2020-10-13 04:33:12,231 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 04:33:12,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 04:33:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 04:33:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 04:33:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 04:33:12,237 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 138 [2020-10-13 04:33:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:12,237 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 04:33:12,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:33:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 04:33:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 04:33:12,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:12,238 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:12,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 04:33:12,238 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1784377193, now seen corresponding path program 30 times [2020-10-13 04:33:12,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:12,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309580463] [2020-10-13 04:33:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 04:33:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 04:33:17,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 04:33:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 04:33:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 04:33:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:17,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:17,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 04:33:17,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:33:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:17,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:17,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 04:33:17,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:17,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:17,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 04:33:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:17,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:17,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 04:33:17,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:17,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 04:33:17,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309580463] [2020-10-13 04:33:17,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:17,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:33:17,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807851419] [2020-10-13 04:33:17,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:33:17,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:17,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:33:17,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:17,668 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 04:33:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:17,769 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-13 04:33:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 04:33:17,770 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 04:33:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:17,771 INFO L225 Difference]: With dead ends: 123 [2020-10-13 04:33:17,771 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 04:33:17,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:33:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 04:33:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 04:33:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:33:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 04:33:17,777 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 04:33:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:17,778 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 04:33:17,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:33:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 04:33:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 04:33:17,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:17,780 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:17,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 04:33:17,781 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:17,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1450001685, now seen corresponding path program 31 times [2020-10-13 04:33:17,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:17,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805728269] [2020-10-13 04:33:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:22,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:22,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 04:33:22,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 04:33:22,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 04:33:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:22,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:22,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:22,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:22,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 04:33:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 04:33:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:23,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 04:33:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 04:33:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2020-10-13 04:33:23,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805728269] [2020-10-13 04:33:23,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:23,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:23,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769865590] [2020-10-13 04:33:23,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:23,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:23,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:23,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:23,202 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 04:33:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:23,504 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2020-10-13 04:33:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:23,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 04:33:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:23,505 INFO L225 Difference]: With dead ends: 151 [2020-10-13 04:33:23,505 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 04:33:23,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 04:33:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 04:33:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 04:33:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 04:33:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 04:33:23,511 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 04:33:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:23,512 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 04:33:23,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 04:33:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 04:33:23,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:23,513 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:23,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 04:33:23,514 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:23,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1537105427, now seen corresponding path program 32 times [2020-10-13 04:33:23,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:23,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236483743] [2020-10-13 04:33:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:28,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:28,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:28,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:28,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 04:33:28,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:28,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:33:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:28,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:28,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 04:33:28,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:28,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 04:33:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2020-10-13 04:33:28,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236483743] [2020-10-13 04:33:28,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:28,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:28,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257868449] [2020-10-13 04:33:28,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:28,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:28,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:28,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:28,983 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 04:33:29,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:29,095 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-13 04:33:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:29,095 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 04:33:29,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:29,097 INFO L225 Difference]: With dead ends: 129 [2020-10-13 04:33:29,097 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 04:33:29,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 04:33:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 04:33:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:33:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 04:33:29,105 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 148 [2020-10-13 04:33:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:29,106 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 04:33:29,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 04:33:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 04:33:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:29,107 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:29,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 04:33:29,108 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:29,108 INFO L82 PathProgramCache]: Analyzing trace with hash 2073990033, now seen corresponding path program 33 times [2020-10-13 04:33:29,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:29,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639475761] [2020-10-13 04:33:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:34,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 04:33:34,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:33:34,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:33:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 04:33:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:34,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:34,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 04:33:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:34,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:34,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:34,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 04:33:34,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:34,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 04:33:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:34,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:34,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 04:33:34,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:34,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 04:33:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:34,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:34,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:34,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 04:33:34,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:34,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1648 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2020-10-13 04:33:34,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639475761] [2020-10-13 04:33:34,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:34,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 04:33:34,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455304158] [2020-10-13 04:33:34,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 04:33:34,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:34,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 04:33:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:34,555 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 04:33:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:34,724 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-13 04:33:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:33:34,725 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 04:33:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:34,726 INFO L225 Difference]: With dead ends: 160 [2020-10-13 04:33:34,726 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 04:33:34,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 04:33:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 04:33:34,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 04:33:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 04:33:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 04:33:34,737 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 150 [2020-10-13 04:33:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:34,737 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 04:33:34,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 04:33:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 04:33:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 04:33:34,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:34,738 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:34,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 04:33:34,739 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:34,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:34,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1031029363, now seen corresponding path program 34 times [2020-10-13 04:33:34,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:34,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675603380] [2020-10-13 04:33:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 04:33:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:40,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 04:33:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:40,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2020-10-13 04:33:40,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675603380] [2020-10-13 04:33:40,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:40,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:40,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163003494] [2020-10-13 04:33:40,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:40,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:40,201 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 04:33:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:40,532 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-10-13 04:33:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:40,533 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 04:33:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:40,534 INFO L225 Difference]: With dead ends: 161 [2020-10-13 04:33:40,534 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 04:33:40,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:33:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 04:33:40,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 04:33:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 04:33:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 04:33:40,540 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 04:33:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:40,541 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 04:33:40,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 04:33:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 04:33:40,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:40,542 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:40,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 04:33:40,542 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:40,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:40,543 INFO L82 PathProgramCache]: Analyzing trace with hash -513082383, now seen corresponding path program 35 times [2020-10-13 04:33:40,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:40,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939013343] [2020-10-13 04:33:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:45,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:45,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:45,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:45,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:45,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:45,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:45,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:45,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 04:33:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:45,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:33:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:45,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:45,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:45,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:45,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 04:33:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:46,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:46,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 04:33:46,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:46,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2020-10-13 04:33:46,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939013343] [2020-10-13 04:33:46,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:46,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:46,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107433647] [2020-10-13 04:33:46,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:46,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:46,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:46,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:46,072 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 04:33:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:46,171 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-13 04:33:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:46,171 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2020-10-13 04:33:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:46,173 INFO L225 Difference]: With dead ends: 137 [2020-10-13 04:33:46,173 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 04:33:46,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:46,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 04:33:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 04:33:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 04:33:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 04:33:46,180 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 158 [2020-10-13 04:33:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:46,180 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 04:33:46,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 04:33:46,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 04:33:46,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:46,182 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:46,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 04:33:46,182 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash -306961937, now seen corresponding path program 36 times [2020-10-13 04:33:46,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:46,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739081201] [2020-10-13 04:33:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:46,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:51,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 04:33:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 04:33:51,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 04:33:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:33:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 04:33:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:51,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:51,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:51,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:51,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 04:33:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:51,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 04:33:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:51,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 04:33:51,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:51,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:51,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 04:33:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:51,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:51,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 04:33:51,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 04:33:51,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739081201] [2020-10-13 04:33:51,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:51,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 04:33:51,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437794905] [2020-10-13 04:33:51,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 04:33:51,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:51,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 04:33:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:51,705 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 04:33:51,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:51,839 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2020-10-13 04:33:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 04:33:51,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 04:33:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:51,841 INFO L225 Difference]: With dead ends: 170 [2020-10-13 04:33:51,841 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 04:33:51,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:33:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 04:33:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 04:33:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:33:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 04:33:51,847 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 04:33:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:51,847 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 04:33:51,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 04:33:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 04:33:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 04:33:51,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:51,849 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:51,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 04:33:51,849 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:51,849 INFO L82 PathProgramCache]: Analyzing trace with hash 212737617, now seen corresponding path program 37 times [2020-10-13 04:33:51,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:51,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562677280] [2020-10-13 04:33:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 04:33:56,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 04:33:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:56,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:33:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:56,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:56,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:33:56,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:33:56,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:33:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:56,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:33:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:57,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:57,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:33:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 04:33:57,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:33:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 04:33:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:33:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 04:33:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:57,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:57,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 04:33:57,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 04:33:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:33:57,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 04:33:57,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:33:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 04:33:57,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:33:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:33:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 04:33:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:33:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:33:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 04:33:57,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562677280] [2020-10-13 04:33:57,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:33:57,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:33:57,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744129618] [2020-10-13 04:33:57,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:33:57,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:33:57,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:33:57,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:33:57,373 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 04:33:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:33:57,730 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 04:33:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:33:57,734 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 04:33:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:33:57,735 INFO L225 Difference]: With dead ends: 171 [2020-10-13 04:33:57,735 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 04:33:57,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:33:57,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 04:33:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 04:33:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:33:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 04:33:57,743 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 04:33:57,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:33:57,743 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 04:33:57,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:33:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 04:33:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 04:33:57,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:33:57,745 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:33:57,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 04:33:57,745 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:33:57,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:33:57,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1704634289, now seen corresponding path program 38 times [2020-10-13 04:33:57,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:33:57,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212639011] [2020-10-13 04:33:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:33:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:33:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:33:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:02,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 04:34:02,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 04:34:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:34:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:34:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:02,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:02,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 04:34:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:03,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 04:34:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 04:34:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 04:34:03,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 04:34:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:03,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:03,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 04:34:03,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 04:34:03,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212639011] [2020-10-13 04:34:03,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:03,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:34:03,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450018941] [2020-10-13 04:34:03,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:34:03,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:03,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:34:03,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:34:03,377 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 04:34:03,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:03,533 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-13 04:34:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:34:03,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 04:34:03,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:03,534 INFO L225 Difference]: With dead ends: 176 [2020-10-13 04:34:03,535 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 04:34:03,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:34:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 04:34:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 04:34:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 04:34:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 04:34:03,540 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 04:34:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:03,540 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 04:34:03,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:34:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 04:34:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 04:34:03,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:03,544 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:03,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 04:34:03,545 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:03,545 INFO L82 PathProgramCache]: Analyzing trace with hash -808070479, now seen corresponding path program 39 times [2020-10-13 04:34:03,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:03,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139061185] [2020-10-13 04:34:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 04:34:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 04:34:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:34:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 04:34:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 04:34:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:08,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:08,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:08,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:08,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:34:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:08,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:08,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:08,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 04:34:08,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:08,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:08,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:08,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:08,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:08,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:34:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:08,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:09,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:09,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:09,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 04:34:09,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:09,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:09,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 04:34:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:09,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:09,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:09,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:09,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:09,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 04:34:09,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:09,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:34:09,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139061185] [2020-10-13 04:34:09,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:09,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:34:09,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034551892] [2020-10-13 04:34:09,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:34:09,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:09,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:34:09,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:34:09,207 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 04:34:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:09,355 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-13 04:34:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 04:34:09,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 04:34:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:09,357 INFO L225 Difference]: With dead ends: 147 [2020-10-13 04:34:09,358 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 04:34:09,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:34:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 04:34:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 04:34:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:34:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 04:34:09,364 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 04:34:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:09,365 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 04:34:09,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:34:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 04:34:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 04:34:09,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:09,366 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:09,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 04:34:09,366 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:09,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1086244689, now seen corresponding path program 40 times [2020-10-13 04:34:09,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:09,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848197923] [2020-10-13 04:34:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:10,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 04:34:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 04:34:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-13 04:34:14,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:34:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 04:34:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 04:34:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:34:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:34:14,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:34:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:34:14,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:34:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:14,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 04:34:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:14,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 04:34:14,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:14,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 04:34:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 04:34:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:14,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:34:14,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 04:34:14,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:34:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 04:34:14,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:34:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:34:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 04:34:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:34:14,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:34:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 04:34:14,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848197923] [2020-10-13 04:34:14,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:34:14,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 04:34:14,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533425331] [2020-10-13 04:34:14,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 04:34:14,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:34:14,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 04:34:14,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:14,998 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 04:34:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:34:15,116 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-13 04:34:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:34:15,117 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 04:34:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:34:15,118 INFO L225 Difference]: With dead ends: 182 [2020-10-13 04:34:15,118 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 04:34:15,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 04:34:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 04:34:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 04:34:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 04:34:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 04:34:15,124 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 04:34:15,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:34:15,124 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 04:34:15,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 04:34:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 04:34:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 04:34:15,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:34:15,125 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:34:15,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 04:34:15,125 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:34:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:34:15,125 INFO L82 PathProgramCache]: Analyzing trace with hash 2034872849, now seen corresponding path program 41 times [2020-10-13 04:34:15,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:34:15,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53386694] [2020-10-13 04:34:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:34:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:34:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:34:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking...