/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/loops-crafted-1/nested3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:31:37,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:31:37,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:31:37,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:31:37,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:31:37,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:31:37,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:31:37,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:31:37,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:31:37,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:31:37,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:31:37,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:31:37,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:31:37,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:31:37,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:31:37,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:31:37,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:31:37,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:31:37,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:31:37,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:31:37,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:31:37,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:31:37,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:31:37,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:31:37,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:31:37,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:31:37,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:31:37,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:31:37,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:31:37,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:31:37,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:31:37,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:31:37,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:31:37,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:31:37,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:31:37,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:31:37,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:31:37,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:31:37,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:31:37,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:31:37,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:31:37,173 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 [2020-10-14 05:31:37,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:31:37,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:31:37,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:31:37,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:31:37,198 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:31:37,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:31:37,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:31:37,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:31:37,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:31:37,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:31:37,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:31:37,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:31:37,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:31:37,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:31:37,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:31:37,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:31:37,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:31:37,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:31:37,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:31:37,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:31:37,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:31:37,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:31:37,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:31:37,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:31:37,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:31:37,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:31:37,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:31:37,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:31:37,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:31:37,203 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:31:37,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:31:37,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:31:37,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:31:37,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:31:37,554 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:31:37,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2020-10-14 05:31:37,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/679fd57cf/9487d2140463464f97527841aba52a9f/FLAG26a7b89a4 [2020-10-14 05:31:38,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:31:38,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2020-10-14 05:31:38,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/679fd57cf/9487d2140463464f97527841aba52a9f/FLAG26a7b89a4 [2020-10-14 05:31:38,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/679fd57cf/9487d2140463464f97527841aba52a9f [2020-10-14 05:31:38,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:31:38,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:31:38,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:31:38,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:31:38,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:31:38,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3b6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38, skipping insertion in model container [2020-10-14 05:31:38,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:31:38,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:31:38,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:31:38,667 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:31:38,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:31:38,704 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:31:38,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38 WrapperNode [2020-10-14 05:31:38,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:31:38,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:31:38,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:31:38,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:31:38,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (1/1) ... [2020-10-14 05:31:38,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:31:38,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:31:38,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:31:38,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:31:38,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (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 [2020-10-14 05:31:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:31:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:31:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:31:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:31:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:31:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:31:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:31:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:31:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:31:39,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:31:39,171 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 05:31:39,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:39 BoogieIcfgContainer [2020-10-14 05:31:39,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:31:39,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:31:39,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:31:39,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:31:39,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:31:38" (1/3) ... [2020-10-14 05:31:39,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afb2387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:39, skipping insertion in model container [2020-10-14 05:31:39,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:38" (2/3) ... [2020-10-14 05:31:39,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afb2387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:39, skipping insertion in model container [2020-10-14 05:31:39,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:39" (3/3) ... [2020-10-14 05:31:39,184 INFO L109 eAbstractionObserver]: Analyzing ICFG nested3-1.c [2020-10-14 05:31:39,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:31:39,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:31:39,219 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:31:39,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:31:39,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:31:39,252 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:31:39,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:31:39,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:31:39,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:31:39,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:31:39,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:31:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-14 05:31:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:31:39,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:39,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:39,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash -557519811, now seen corresponding path program 1 times [2020-10-14 05:31:39,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:39,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505012842] [2020-10-14 05:31:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:39,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:31:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 05:31:39,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:39,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:31:39,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:31:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:39,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:31:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:39,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:31:39,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505012842] [2020-10-14 05:31:39,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:31:39,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 05:31:39,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111211486] [2020-10-14 05:31:39,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 05:31:39,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:39,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 05:31:39,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:31:39,555 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-10-14 05:31:39,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:39,577 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2020-10-14 05:31:39,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 05:31:39,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-14 05:31:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:39,587 INFO L225 Difference]: With dead ends: 43 [2020-10-14 05:31:39,588 INFO L226 Difference]: Without dead ends: 19 [2020-10-14 05:31:39,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:31:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-14 05:31:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-14 05:31:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 05:31:39,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-14 05:31:39,630 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2020-10-14 05:31:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:39,631 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-14 05:31:39,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 05:31:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-14 05:31:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:31:39,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:39,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:39,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:31:39,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:39,634 INFO L82 PathProgramCache]: Analyzing trace with hash -587072483, now seen corresponding path program 1 times [2020-10-14 05:31:39,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:39,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542751691] [2020-10-14 05:31:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:39,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:31:39,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 05:31:39,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:39,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:31:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:31:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:39,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:39,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:39,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:39,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:39,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:31:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:39,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:31:39,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542751691] [2020-10-14 05:31:39,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:31:39,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:31:39,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534360554] [2020-10-14 05:31:39,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:31:39,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:39,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:31:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:31:39,935 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2020-10-14 05:31:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:39,990 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-10-14 05:31:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:31:39,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 05:31:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:39,995 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:31:39,995 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 05:31:40,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:31:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 05:31:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2020-10-14 05:31:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 05:31:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-10-14 05:31:40,019 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2020-10-14 05:31:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:40,019 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-10-14 05:31:40,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:31:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-10-14 05:31:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 05:31:40,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:40,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:40,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:31:40,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:40,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1005021419, now seen corresponding path program 1 times [2020-10-14 05:31:40,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:40,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792278330] [2020-10-14 05:31:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:40,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:31:40,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:31:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:40,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:31:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:31:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:40,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:40,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:40,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:40,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:31:40,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:40,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:40,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:40,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:31:40,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792278330] [2020-10-14 05:31:40,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:31:40,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:31:40,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373043010] [2020-10-14 05:31:40,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:31:40,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:40,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:31:40,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:31:40,144 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2020-10-14 05:31:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:40,164 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-10-14 05:31:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:31:40,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-14 05:31:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:40,166 INFO L225 Difference]: With dead ends: 38 [2020-10-14 05:31:40,166 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:31:40,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:31:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:31:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-14 05:31:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:31:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-10-14 05:31:40,174 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2020-10-14 05:31:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:40,175 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-10-14 05:31:40,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:31:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-10-14 05:31:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:31:40,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:40,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:40,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:31:40,177 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:40,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1066437398, now seen corresponding path program 1 times [2020-10-14 05:31:40,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:40,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902708135] [2020-10-14 05:31:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:40,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:31:40,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:40,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 05:31:40,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:40,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:40,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:31:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:31:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:40,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:40,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:31:40,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:40,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:40,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:40,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:40,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:40,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:31:40,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902708135] [2020-10-14 05:31:40,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:31:40,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:31:40,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737363364] [2020-10-14 05:31:40,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:31:40,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:40,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:31:40,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:31:40,342 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2020-10-14 05:31:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:40,357 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-10-14 05:31:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:31:40,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-14 05:31:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:40,360 INFO L225 Difference]: With dead ends: 38 [2020-10-14 05:31:40,360 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 05:31:40,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:31:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 05:31:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 05:31:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 05:31:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-14 05:31:40,368 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2020-10-14 05:31:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:40,368 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-14 05:31:40,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:31:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-14 05:31:40,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 05:31:40,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:40,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:40,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:31:40,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:40,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:40,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1326481591, now seen corresponding path program 1 times [2020-10-14 05:31:40,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:40,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591937250] [2020-10-14 05:31:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:40,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:31:40,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:31:40,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 05:31:40,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:40,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:31:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:31:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 05:31:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:40,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:40,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:31:40,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:40,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:31:40,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591937250] [2020-10-14 05:31:40,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:40,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:31:40,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024090353] [2020-10-14 05:31:40,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:31:40,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:40,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:31:40,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:31:40,645 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2020-10-14 05:31:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:40,667 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-14 05:31:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:31:40,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-14 05:31:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:40,669 INFO L225 Difference]: With dead ends: 40 [2020-10-14 05:31:40,669 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:31:40,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:31:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:31:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-14 05:31:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 05:31:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-14 05:31:40,677 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2020-10-14 05:31:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:40,677 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-14 05:31:40,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:31:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-14 05:31:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 05:31:40,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:40,678 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:40,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:31:40,679 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:40,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1802441078, now seen corresponding path program 2 times [2020-10-14 05:31:40,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:40,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040331108] [2020-10-14 05:31:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:40,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:40,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:31:40,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:31:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 05:31:40,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:40,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:31:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:31:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:31:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:41,102 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 20 [2020-10-14 05:31:41,313 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 13 [2020-10-14 05:31:41,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:31:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:41,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:31:41,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040331108] [2020-10-14 05:31:41,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:31:41,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 05:31:41,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758120967] [2020-10-14 05:31:41,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:31:41,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:41,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:31:41,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:31:41,343 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-10-14 05:31:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:41,418 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-14 05:31:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:31:41,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 05:31:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:41,420 INFO L225 Difference]: With dead ends: 30 [2020-10-14 05:31:41,420 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 05:31:41,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:31:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 05:31:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 05:31:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 05:31:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-14 05:31:41,429 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 14 [2020-10-14 05:31:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:41,430 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-14 05:31:41,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:31:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-14 05:31:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:31:41,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:41,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:41,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:31:41,432 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash -444927753, now seen corresponding path program 1 times [2020-10-14 05:31:41,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:41,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984119325] [2020-10-14 05:31:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:42,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:31:42,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:31:42,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-14 05:31:42,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:42,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:31:42,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:31:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:31:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:42,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:42,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:42,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:42,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:31:42,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:42,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:42,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:42,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:31:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:42,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:42,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:42,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:31:42,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:42,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:42,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:31:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:31:42,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984119325] [2020-10-14 05:31:42,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:42,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:31:42,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155396100] [2020-10-14 05:31:42,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:31:42,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:42,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:31:42,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:31:42,156 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 4 states. [2020-10-14 05:31:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:42,220 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2020-10-14 05:31:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:31:42,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 05:31:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:42,223 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:31:42,223 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:31:42,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:31:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:31:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-14 05:31:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:31:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-14 05:31:42,241 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 21 [2020-10-14 05:31:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:42,242 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-14 05:31:42,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:31:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-14 05:31:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 05:31:42,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:42,244 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:42,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:31:42,245 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash 677894233, now seen corresponding path program 2 times [2020-10-14 05:31:42,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:42,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558293769] [2020-10-14 05:31:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:44,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:44,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:31:44,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:31:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2632 [2020-10-14 05:31:44,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:44,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:31:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:31:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:31:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:31:44,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:44,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:44,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:31:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:44,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:44,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:44,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:31:44,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:44,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:31:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:44,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:31:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:44,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:44,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:44,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:44,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:31:44,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:44,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:44,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:31:44,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 05:31:45,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558293769] [2020-10-14 05:31:45,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:45,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:31:45,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930139330] [2020-10-14 05:31:45,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:31:45,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:45,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:31:45,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:31:45,007 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2020-10-14 05:31:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:45,067 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2020-10-14 05:31:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:31:45,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-14 05:31:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:45,069 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:31:45,069 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 05:31:45,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:31:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 05:31:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-14 05:31:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:31:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-14 05:31:45,079 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 31 [2020-10-14 05:31:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:45,080 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-14 05:31:45,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:31:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-14 05:31:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 05:31:45,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:45,081 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:45,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:31:45,082 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:45,082 INFO L82 PathProgramCache]: Analyzing trace with hash 288124219, now seen corresponding path program 3 times [2020-10-14 05:31:45,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:45,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383576325] [2020-10-14 05:31:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:45,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:50,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 05:31:50,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:31:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:31:50,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:50,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:31:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:31:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:31:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:50,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:50,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:50,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:50,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:31:50,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:50,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:31:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:50,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:50,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:50,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:31:50,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:50,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:50,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:31:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:31:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:50,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:31:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:50,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:31:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:50,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:31:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:50,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:31:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:50,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:31:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:31:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 05:31:50,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383576325] [2020-10-14 05:31:50,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:50,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:31:50,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061732287] [2020-10-14 05:31:50,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:31:50,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:50,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:31:50,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:31:50,263 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 6 states. [2020-10-14 05:31:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:50,371 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2020-10-14 05:31:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:31:50,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-14 05:31:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:50,375 INFO L225 Difference]: With dead ends: 83 [2020-10-14 05:31:50,376 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:31:50,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:31:50,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:31:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-10-14 05:31:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 05:31:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-14 05:31:50,398 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 41 [2020-10-14 05:31:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:50,400 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-14 05:31:50,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:31:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-14 05:31:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:31:50,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:50,407 INFO L422 BasicCegarLoop]: trace histogram [8, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:50,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:31:50,408 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:50,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2116931485, now seen corresponding path program 4 times [2020-10-14 05:31:50,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:50,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289283633] [2020-10-14 05:31:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:51,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:55,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:31:55,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:31:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 05:31:55,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:55,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:31:55,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:31:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:55,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:31:55,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:31:55,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:55,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:31:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 05:31:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:55,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:55,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:31:55,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:55,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:55,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:31:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:31:55,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:55,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:31:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:31:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:55,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:55,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:31:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:55,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:31:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:55,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:31:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:31:55,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:31:55,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:31:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:31:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:31:55,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:31:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:31:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:31:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:31:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:31:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 67 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 05:31:55,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289283633] [2020-10-14 05:31:55,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:31:55,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:31:55,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856682788] [2020-10-14 05:31:55,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:31:55,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:31:55,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:31:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:31:55,599 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 5 states. [2020-10-14 05:31:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:31:55,645 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2020-10-14 05:31:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:31:55,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-14 05:31:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:31:55,649 INFO L225 Difference]: With dead ends: 89 [2020-10-14 05:31:55,650 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:31:55,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:31:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:31:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 05:31:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 05:31:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-14 05:31:55,678 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 51 [2020-10-14 05:31:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:31:55,679 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-14 05:31:55,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:31:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-14 05:31:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:31:55,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:31:55,689 INFO L422 BasicCegarLoop]: trace histogram [12, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:31:55,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:31:55,689 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:31:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:31:55,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1313568555, now seen corresponding path program 5 times [2020-10-14 05:31:55,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:31:55,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560210980] [2020-10-14 05:31:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:31:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:31:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:31:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:00,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:32:00,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 05:32:00,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:00,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:32:00,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:32:00,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:32:00,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:00,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:00,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:00,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:32:00,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:00,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:32:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:00,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:00,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:00,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:32:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:00,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:00,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:00,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:00,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:00,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:00,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:00,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:32:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:00,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:00,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:00,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:32:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:00,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:00,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:00,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:00,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:00,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 05:32:00,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560210980] [2020-10-14 05:32:00,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:00,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:32:00,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885876079] [2020-10-14 05:32:00,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:32:00,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:00,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:32:00,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:32:00,823 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 6 states. [2020-10-14 05:32:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:00,859 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2020-10-14 05:32:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:32:00,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 05:32:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:00,861 INFO L225 Difference]: With dead ends: 97 [2020-10-14 05:32:00,861 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:32:00,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:32:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:32:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 05:32:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:32:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-14 05:32:00,872 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 55 [2020-10-14 05:32:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:00,873 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-14 05:32:00,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:32:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-14 05:32:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:32:00,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:00,874 INFO L422 BasicCegarLoop]: trace histogram [16, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:00,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:32:00,874 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:00,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:00,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1291618787, now seen corresponding path program 6 times [2020-10-14 05:32:00,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:00,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349988627] [2020-10-14 05:32:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:01,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:05,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:05,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 05:32:05,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:32:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:32:05,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:05,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:32:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 05:32:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:32:05,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:09,922 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 141 DAG size of output: 12 [2020-10-14 05:32:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:09,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:09,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:09,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:32:09,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:09,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:32:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:09,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:09,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:32:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:09,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:32:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:09,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:09,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:09,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:32:09,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:09,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:32:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:32:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:09,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 05:32:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:09,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:09,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:09,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:32:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:09,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:09,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 150 proven. 16 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 05:32:09,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349988627] [2020-10-14 05:32:09,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:09,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:32:09,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783661648] [2020-10-14 05:32:09,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:32:09,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:32:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:32:09,998 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 9 states. [2020-10-14 05:32:10,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:10,111 INFO L93 Difference]: Finished difference Result 109 states and 135 transitions. [2020-10-14 05:32:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:32:10,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 05:32:10,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:10,112 INFO L225 Difference]: With dead ends: 109 [2020-10-14 05:32:10,112 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 05:32:10,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:32:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 05:32:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 05:32:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 05:32:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-14 05:32:10,124 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 59 [2020-10-14 05:32:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:10,124 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-14 05:32:10,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:32:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-14 05:32:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 05:32:10,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:10,125 INFO L422 BasicCegarLoop]: trace histogram [20, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:10,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:32:10,126 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:10,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:10,126 INFO L82 PathProgramCache]: Analyzing trace with hash -902327467, now seen corresponding path program 7 times [2020-10-14 05:32:10,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:10,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142249963] [2020-10-14 05:32:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:32:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:32:15,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:15,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:32:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:32:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:32:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:15,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:15,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:32:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:15,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:32:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:15,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:32:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:15,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:15,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:15,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:15,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:15,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:15,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:15,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 05:32:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:15,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:15,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:15,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:15,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:15,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 05:32:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:15,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:15,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:15,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:15,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:15,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 202 proven. 15 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-14 05:32:15,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142249963] [2020-10-14 05:32:15,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:15,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:32:15,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97035844] [2020-10-14 05:32:15,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:32:15,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:15,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:32:15,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:32:15,282 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 8 states. [2020-10-14 05:32:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:15,340 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2020-10-14 05:32:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:32:15,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-14 05:32:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:15,341 INFO L225 Difference]: With dead ends: 113 [2020-10-14 05:32:15,342 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 05:32:15,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:32:15,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 05:32:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 05:32:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 05:32:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-14 05:32:15,363 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 63 [2020-10-14 05:32:15,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:15,363 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-14 05:32:15,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:32:15,363 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-14 05:32:15,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 05:32:15,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:15,364 INFO L422 BasicCegarLoop]: trace histogram [24, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:15,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:32:15,365 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:15,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:15,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1245797533, now seen corresponding path program 8 times [2020-10-14 05:32:15,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:15,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751419482] [2020-10-14 05:32:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:20,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 05:32:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:32:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:20,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:32:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:32:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:32:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:20,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:20,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:20,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:20,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:32:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:20,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:20,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:20,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:20,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:32:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:20,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:20,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:20,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:20,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:20,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:20,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 05:32:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:20,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:20,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:20,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:20,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:20,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:20,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 05:32:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:20,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 159 proven. 21 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-14 05:32:20,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751419482] [2020-10-14 05:32:20,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:20,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:32:20,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804726531] [2020-10-14 05:32:20,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:32:20,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:20,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:32:20,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:32:20,578 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 9 states. [2020-10-14 05:32:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:20,643 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2020-10-14 05:32:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:32:20,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-14 05:32:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:20,645 INFO L225 Difference]: With dead ends: 121 [2020-10-14 05:32:20,645 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 05:32:20,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:32:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 05:32:20,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 05:32:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 05:32:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-10-14 05:32:20,661 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 67 [2020-10-14 05:32:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:20,662 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-10-14 05:32:20,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:32:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-10-14 05:32:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 05:32:20,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:20,663 INFO L422 BasicCegarLoop]: trace histogram [28, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:20,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:32:20,663 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:20,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1088445909, now seen corresponding path program 9 times [2020-10-14 05:32:20,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:20,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106166522] [2020-10-14 05:32:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 05:32:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:32:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:25,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:32:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 05:32:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:32:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:25,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 05:32:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:25,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:25,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:32:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:25,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:25,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:25,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:25,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:25,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:25,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:25,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 05:32:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:25,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:25,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:25,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:25,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:25,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:25,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 05:32:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:25,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:25,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:25,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:25,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:25,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 210 proven. 28 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-14 05:32:25,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106166522] [2020-10-14 05:32:25,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:25,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:32:25,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805663992] [2020-10-14 05:32:25,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:32:25,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:32:25,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:32:25,827 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 10 states. [2020-10-14 05:32:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:25,899 INFO L93 Difference]: Finished difference Result 129 states and 151 transitions. [2020-10-14 05:32:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:32:25,899 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-14 05:32:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:25,900 INFO L225 Difference]: With dead ends: 129 [2020-10-14 05:32:25,900 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 05:32:25,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:32:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 05:32:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 05:32:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 05:32:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-14 05:32:25,912 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 71 [2020-10-14 05:32:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:25,912 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-14 05:32:25,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:32:25,912 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-14 05:32:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 05:32:25,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:25,913 INFO L422 BasicCegarLoop]: trace histogram [32, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:25,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:32:25,914 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:25,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:25,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1337490659, now seen corresponding path program 10 times [2020-10-14 05:32:25,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:25,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049390641] [2020-10-14 05:32:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:25,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:25,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:30,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:30,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 05:32:30,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:32:30,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 05:32:30,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:30,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:30,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:32:30,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 05:32:30,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:32:30,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 05:32:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:31,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:31,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:31,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 05:32:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:31,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:31,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:31,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:32:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:32:31,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:32:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:32:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 05:32:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:31,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:31,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:31,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:31,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 434 proven. 39 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-14 05:32:31,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049390641] [2020-10-14 05:32:31,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:31,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:32:31,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762134442] [2020-10-14 05:32:31,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:32:31,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:31,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:32:31,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:32:31,213 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 13 states. [2020-10-14 05:32:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:31,414 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2020-10-14 05:32:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:32:31,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-10-14 05:32:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:31,415 INFO L225 Difference]: With dead ends: 137 [2020-10-14 05:32:31,416 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 05:32:31,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:32:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 05:32:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 05:32:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 05:32:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-14 05:32:31,434 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 75 [2020-10-14 05:32:31,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:31,434 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-14 05:32:31,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:32:31,434 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-14 05:32:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 05:32:31,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:31,442 INFO L422 BasicCegarLoop]: trace histogram [36, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:31,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:32:31,442 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:31,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:31,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1104078933, now seen corresponding path program 11 times [2020-10-14 05:32:31,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:31,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168205722] [2020-10-14 05:32:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:33,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 05:32:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:32:36,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:36,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:32:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 05:32:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:32:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:36,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:36,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:36,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:36,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:32:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:36,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:36,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:36,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:36,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:36,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:36,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:36,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:36,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 05:32:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:36,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:36,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:36,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:36,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:36,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 05:32:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:36,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:36,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:36,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:36,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 05:32:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:36,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:36,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:36,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:32:36,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:36,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 520 proven. 45 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-14 05:32:36,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168205722] [2020-10-14 05:32:36,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:36,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:32:36,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168677686] [2020-10-14 05:32:36,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:32:36,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:36,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:32:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:32:36,712 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 12 states. [2020-10-14 05:32:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:36,845 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2020-10-14 05:32:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:32:36,846 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-14 05:32:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:36,848 INFO L225 Difference]: With dead ends: 145 [2020-10-14 05:32:36,848 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:32:36,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:32:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:32:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 05:32:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 05:32:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-14 05:32:36,867 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 79 [2020-10-14 05:32:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:36,868 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-14 05:32:36,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:32:36,868 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-14 05:32:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 05:32:36,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:36,870 INFO L422 BasicCegarLoop]: trace histogram [40, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:36,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:32:36,870 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:36,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1787434595, now seen corresponding path program 12 times [2020-10-14 05:32:36,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:36,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672220288] [2020-10-14 05:32:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:36,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:39,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:41,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:32:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:42,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:42,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:42,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:42,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 05:32:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:42,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:42,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:42,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:42,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 05:32:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:42,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:42,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 05:32:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:42,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:32:42,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:42,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 05:32:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:42,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:42,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:42,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:42,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:42,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:42,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 627 proven. 55 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-10-14 05:32:42,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672220288] [2020-10-14 05:32:42,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:42,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:32:42,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59080723] [2020-10-14 05:32:42,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:32:42,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:42,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:32:42,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:32:42,151 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 13 states. [2020-10-14 05:32:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:42,308 INFO L93 Difference]: Finished difference Result 153 states and 175 transitions. [2020-10-14 05:32:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:32:42,309 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-14 05:32:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:42,314 INFO L225 Difference]: With dead ends: 153 [2020-10-14 05:32:42,315 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 05:32:42,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:32:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 05:32:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 05:32:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 05:32:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-14 05:32:42,334 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 83 [2020-10-14 05:32:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:42,334 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-14 05:32:42,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:32:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-14 05:32:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 05:32:42,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:42,336 INFO L422 BasicCegarLoop]: trace histogram [44, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:42,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:32:42,337 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:42,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash -182242603, now seen corresponding path program 13 times [2020-10-14 05:32:42,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:42,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537225097] [2020-10-14 05:32:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:47,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 05:32:47,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:32:47,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 05:32:47,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:47,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:32:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 05:32:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:32:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:47,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:47,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:47,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:47,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:32:47,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:47,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:32:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:47,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:47,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:47,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:47,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 05:32:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:47,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:47,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:47,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:47,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:47,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 05:32:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:47,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:47,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:47,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:47,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:47,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:47,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 05:32:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:47,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:47,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:47,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:47,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:47,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 450 proven. 66 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2020-10-14 05:32:47,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537225097] [2020-10-14 05:32:47,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:47,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:32:47,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986760059] [2020-10-14 05:32:47,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:32:47,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:47,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:32:47,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:32:47,658 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 14 states. [2020-10-14 05:32:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:47,809 INFO L93 Difference]: Finished difference Result 161 states and 183 transitions. [2020-10-14 05:32:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:32:47,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-14 05:32:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:47,810 INFO L225 Difference]: With dead ends: 161 [2020-10-14 05:32:47,810 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 05:32:47,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:32:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 05:32:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 05:32:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 05:32:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-10-14 05:32:47,829 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 87 [2020-10-14 05:32:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:47,830 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-10-14 05:32:47,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:32:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-10-14 05:32:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 05:32:47,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:47,833 INFO L422 BasicCegarLoop]: trace histogram [48, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:47,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:32:47,833 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -299069411, now seen corresponding path program 14 times [2020-10-14 05:32:47,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:47,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959706413] [2020-10-14 05:32:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:52,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:52,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 05:32:52,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:32:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 05:32:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:52,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:32:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 05:32:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:32:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:53,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:53,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:32:53,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:53,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:32:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:53,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:32:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:53,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:53,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:53,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:53,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:53,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 05:32:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:53,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:53,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:53,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:53,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:32:53,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:53,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:32:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:32:53,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:32:53,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:32:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 05:32:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:53,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:53,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:32:53,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:53,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 874 proven. 81 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2020-10-14 05:32:53,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959706413] [2020-10-14 05:32:53,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:53,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:32:53,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214687650] [2020-10-14 05:32:53,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:32:53,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:53,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:32:53,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:32:53,351 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 17 states. [2020-10-14 05:32:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:53,600 INFO L93 Difference]: Finished difference Result 173 states and 199 transitions. [2020-10-14 05:32:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:32:53,601 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-14 05:32:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:53,602 INFO L225 Difference]: With dead ends: 173 [2020-10-14 05:32:53,602 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 05:32:53,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:32:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 05:32:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 05:32:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 05:32:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-14 05:32:53,618 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 91 [2020-10-14 05:32:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:53,618 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-14 05:32:53,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:32:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-14 05:32:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 05:32:53,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:53,620 INFO L422 BasicCegarLoop]: trace histogram [52, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:53,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:32:53,620 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:53,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2130525525, now seen corresponding path program 15 times [2020-10-14 05:32:53,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:53,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184093394] [2020-10-14 05:32:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:53,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:58,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 05:32:58,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:32:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:32:58,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:58,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:32:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 05:32:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:32:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:32:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:58,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:32:58,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:32:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:58,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 05:32:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:58,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 05:32:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:58,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:58,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:58,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:32:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 05:32:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:58,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:58,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:58,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:58,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 05:32:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:32:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:32:58,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:32:58,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:32:58,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:32:58,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:32:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:32:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:32:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:32:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:32:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1594 backedges. 1002 proven. 91 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2020-10-14 05:32:58,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184093394] [2020-10-14 05:32:58,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:32:58,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:32:58,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323492249] [2020-10-14 05:32:58,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:32:58,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:32:58,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:32:58,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:32:58,909 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 16 states. [2020-10-14 05:32:59,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:32:59,108 INFO L93 Difference]: Finished difference Result 177 states and 199 transitions. [2020-10-14 05:32:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:32:59,109 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 95 [2020-10-14 05:32:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:32:59,111 INFO L225 Difference]: With dead ends: 177 [2020-10-14 05:32:59,111 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 05:32:59,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:32:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 05:32:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 05:32:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 05:32:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-10-14 05:32:59,135 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 95 [2020-10-14 05:32:59,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:32:59,135 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-10-14 05:32:59,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:32:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-10-14 05:32:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 05:32:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:32:59,136 INFO L422 BasicCegarLoop]: trace histogram [56, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:32:59,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:32:59,137 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:32:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:32:59,137 INFO L82 PathProgramCache]: Analyzing trace with hash -221546851, now seen corresponding path program 16 times [2020-10-14 05:32:59,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:32:59,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256038729] [2020-10-14 05:32:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:32:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:32:59,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:32:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:04,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 05:33:04,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:04,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 05:33:04,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:04,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:33:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:33:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:33:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:04,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:04,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:04,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:04,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:04,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:04,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:33:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:04,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:04,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:04,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:04,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:04,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:04,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:33:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:04,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:04,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:04,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 05:33:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:04,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:04,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:04,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:04,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 05:33:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:04,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:04,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:04,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:04,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 687 proven. 105 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2020-10-14 05:33:04,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256038729] [2020-10-14 05:33:04,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:04,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:33:04,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116914135] [2020-10-14 05:33:04,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:33:04,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:04,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:33:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:33:04,460 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 17 states. [2020-10-14 05:33:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:04,665 INFO L93 Difference]: Finished difference Result 185 states and 207 transitions. [2020-10-14 05:33:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:33:04,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 99 [2020-10-14 05:33:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:04,669 INFO L225 Difference]: With dead ends: 185 [2020-10-14 05:33:04,669 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 05:33:04,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:33:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 05:33:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 05:33:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 05:33:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-10-14 05:33:04,687 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 99 [2020-10-14 05:33:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:04,688 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-10-14 05:33:04,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:33:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-10-14 05:33:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 05:33:04,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:04,690 INFO L422 BasicCegarLoop]: trace histogram [60, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:04,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:33:04,690 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:04,690 INFO L82 PathProgramCache]: Analyzing trace with hash -8583211, now seen corresponding path program 17 times [2020-10-14 05:33:04,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:04,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272929058] [2020-10-14 05:33:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:09,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:09,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 05:33:09,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:09,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:33:09,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:09,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:33:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 05:33:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:33:09,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:09,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:09,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:09,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:33:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:09,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 05:33:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:09,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 05:33:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:09,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:09,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:09,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:09,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:09,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:09,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 05:33:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:10,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:10,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:10,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:10,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 1300 proven. 120 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2020-10-14 05:33:10,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272929058] [2020-10-14 05:33:10,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:10,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:33:10,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700029817] [2020-10-14 05:33:10,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:33:10,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:10,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:33:10,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:33:10,014 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 18 states. [2020-10-14 05:33:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:10,230 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2020-10-14 05:33:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:33:10,231 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-10-14 05:33:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:10,232 INFO L225 Difference]: With dead ends: 193 [2020-10-14 05:33:10,232 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 05:33:10,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:33:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 05:33:10,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 05:33:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 05:33:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-10-14 05:33:10,248 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 103 [2020-10-14 05:33:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:10,249 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-10-14 05:33:10,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:33:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-10-14 05:33:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 05:33:10,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:10,250 INFO L422 BasicCegarLoop]: trace histogram [64, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:10,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:33:10,251 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:10,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:10,251 INFO L82 PathProgramCache]: Analyzing trace with hash 531799325, now seen corresponding path program 18 times [2020-10-14 05:33:10,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:10,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518748197] [2020-10-14 05:33:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:10,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:15,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 05:33:15,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:33:15,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 05:33:15,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:15,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:33:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 05:33:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:33:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:15,959 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 15 [2020-10-14 05:33:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:15,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:15,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:15,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:15,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:15,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 05:33:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:15,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:15,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:15,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:15,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:33:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:15,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:15,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:15,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 05:33:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:15,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:15,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:15,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:33:15,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:15,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:33:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 05:33:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:16,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:16,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:16,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:16,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:16,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:16,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:16,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:16,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:16,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 1474 proven. 139 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2020-10-14 05:33:16,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518748197] [2020-10-14 05:33:16,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:16,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:33:16,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980003425] [2020-10-14 05:33:16,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:33:16,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:33:16,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:33:16,067 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 21 states. [2020-10-14 05:33:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:16,441 INFO L93 Difference]: Finished difference Result 205 states and 231 transitions. [2020-10-14 05:33:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:33:16,442 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 107 [2020-10-14 05:33:16,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:16,442 INFO L225 Difference]: With dead ends: 205 [2020-10-14 05:33:16,442 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 05:33:16,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:33:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 05:33:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 05:33:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 05:33:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2020-10-14 05:33:16,459 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 107 [2020-10-14 05:33:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:16,459 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2020-10-14 05:33:16,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:33:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2020-10-14 05:33:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 05:33:16,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:16,460 INFO L422 BasicCegarLoop]: trace histogram [68, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:16,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:33:16,461 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:16,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:16,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1832742315, now seen corresponding path program 19 times [2020-10-14 05:33:16,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:16,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733076628] [2020-10-14 05:33:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 05:33:21,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 05:33:21,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:33:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:33:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:33:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:21,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:21,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:21,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:21,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:33:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:21,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:21,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:21,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 05:33:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:21,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:21,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 05:33:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:21,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:21,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:21,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 05:33:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:21,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 984 proven. 153 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2020-10-14 05:33:21,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733076628] [2020-10-14 05:33:21,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:21,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:33:21,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540912167] [2020-10-14 05:33:21,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:33:21,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:21,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:33:21,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:33:21,864 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 20 states. [2020-10-14 05:33:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:22,138 INFO L93 Difference]: Finished difference Result 209 states and 231 transitions. [2020-10-14 05:33:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:33:22,139 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 111 [2020-10-14 05:33:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:22,140 INFO L225 Difference]: With dead ends: 209 [2020-10-14 05:33:22,141 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 05:33:22,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:33:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 05:33:22,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-14 05:33:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 05:33:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2020-10-14 05:33:22,160 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 111 [2020-10-14 05:33:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:22,161 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2020-10-14 05:33:22,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:33:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2020-10-14 05:33:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 05:33:22,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:22,162 INFO L422 BasicCegarLoop]: trace histogram [72, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:22,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:33:22,163 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:22,163 INFO L82 PathProgramCache]: Analyzing trace with hash 893518749, now seen corresponding path program 20 times [2020-10-14 05:33:22,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:22,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54072908] [2020-10-14 05:33:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 05:33:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:33:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:27,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:27,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:27,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:27,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:27,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:33:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:27,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:27,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:27,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:27,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 05:33:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:27,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:27,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:27,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:27,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:27,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:33:27,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 05:33:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:33:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:27,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 05:33:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:27,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:27,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:27,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:27,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1827 proven. 171 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2020-10-14 05:33:27,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54072908] [2020-10-14 05:33:27,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:27,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:33:27,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310098537] [2020-10-14 05:33:27,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:33:27,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:33:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:33:27,711 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand 21 states. [2020-10-14 05:33:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:28,106 INFO L93 Difference]: Finished difference Result 217 states and 239 transitions. [2020-10-14 05:33:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:33:28,107 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 115 [2020-10-14 05:33:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:28,110 INFO L225 Difference]: With dead ends: 217 [2020-10-14 05:33:28,111 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 05:33:28,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:33:28,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 05:33:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-14 05:33:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 05:33:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-10-14 05:33:28,148 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 115 [2020-10-14 05:33:28,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:28,149 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-10-14 05:33:28,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:33:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-10-14 05:33:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 05:33:28,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:28,154 INFO L422 BasicCegarLoop]: trace histogram [76, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:28,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:33:28,154 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:28,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1357765845, now seen corresponding path program 21 times [2020-10-14 05:33:28,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:28,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388286218] [2020-10-14 05:33:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:33,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 05:33:33,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:33,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 05:33:33,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:33,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:33:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 05:33:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:33:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:33,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:33,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:33,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 05:33:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:33,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:33,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:33,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:33,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:33,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 05:33:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:33,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:33,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:33,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:33,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:33,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 05:33:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:33,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:33,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:33,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:33,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:33,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 05:33:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:33,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:33,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:33,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:33,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3214 backedges. 2020 proven. 190 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2020-10-14 05:33:33,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388286218] [2020-10-14 05:33:33,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:33,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:33:33,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901264285] [2020-10-14 05:33:33,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:33:33,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:33,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:33:33,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:33:33,768 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 22 states. [2020-10-14 05:33:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:34,052 INFO L93 Difference]: Finished difference Result 225 states and 247 transitions. [2020-10-14 05:33:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:33:34,052 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 119 [2020-10-14 05:33:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:34,053 INFO L225 Difference]: With dead ends: 225 [2020-10-14 05:33:34,053 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 05:33:34,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:33:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 05:33:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-14 05:33:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 05:33:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2020-10-14 05:33:34,073 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 119 [2020-10-14 05:33:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:34,073 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2020-10-14 05:33:34,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:33:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2020-10-14 05:33:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 05:33:34,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:34,075 INFO L422 BasicCegarLoop]: trace histogram [80, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:34,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:33:34,075 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash 937011741, now seen corresponding path program 22 times [2020-10-14 05:33:34,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:34,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211226138] [2020-10-14 05:33:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:39,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:39,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 05:33:39,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:33:39,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 05:33:39,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:39,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:33:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 05:33:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:33:39,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:43,728 WARN L193 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 142 DAG size of output: 14 [2020-10-14 05:33:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:43,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:43,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:43,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:43,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:43,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:33:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:43,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:43,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:43,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:43,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:43,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:43,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:43,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 05:33:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:43,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:43,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:33:43,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:43,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:33:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:33:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:33:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 05:33:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:43,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:43,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:43,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 05:33:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:43,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:43,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:43,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:43,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:33:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 2230 proven. 216 refuted. 0 times theorem prover too weak. 1094 trivial. 0 not checked. [2020-10-14 05:33:43,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211226138] [2020-10-14 05:33:43,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:43,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:33:43,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982193414] [2020-10-14 05:33:43,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:33:43,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:43,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:33:43,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:33:43,872 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand 25 states. [2020-10-14 05:33:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:44,488 INFO L93 Difference]: Finished difference Result 237 states and 263 transitions. [2020-10-14 05:33:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:33:44,488 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 123 [2020-10-14 05:33:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:44,489 INFO L225 Difference]: With dead ends: 237 [2020-10-14 05:33:44,490 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 05:33:44,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:33:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 05:33:44,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-14 05:33:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 05:33:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2020-10-14 05:33:44,510 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 123 [2020-10-14 05:33:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:44,510 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2020-10-14 05:33:44,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:33:44,511 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2020-10-14 05:33:44,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 05:33:44,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:44,512 INFO L422 BasicCegarLoop]: trace histogram [84, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:44,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:33:44,513 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:44,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:44,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1310648149, now seen corresponding path program 23 times [2020-10-14 05:33:44,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:44,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947419717] [2020-10-14 05:33:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:44,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:49,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:33:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:50,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:50,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:33:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:50,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:50,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:50,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 05:33:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:50,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:50,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:50,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:50,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:50,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:50,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 05:33:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:50,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:50,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:50,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:33:50,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:50,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:50,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 05:33:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:50,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:50,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:50,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:50,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:50,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3882 backedges. 2440 proven. 231 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-14 05:33:50,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947419717] [2020-10-14 05:33:50,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:50,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:33:50,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573425976] [2020-10-14 05:33:50,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:33:50,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:50,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:33:50,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:33:50,087 INFO L87 Difference]: Start difference. First operand 121 states and 130 transitions. Second operand 24 states. [2020-10-14 05:33:50,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:50,462 INFO L93 Difference]: Finished difference Result 241 states and 263 transitions. [2020-10-14 05:33:50,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:33:50,463 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 127 [2020-10-14 05:33:50,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:50,464 INFO L225 Difference]: With dead ends: 241 [2020-10-14 05:33:50,464 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 05:33:50,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:33:50,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 05:33:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-14 05:33:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 05:33:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2020-10-14 05:33:50,491 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 127 [2020-10-14 05:33:50,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:50,492 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2020-10-14 05:33:50,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:33:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2020-10-14 05:33:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 05:33:50,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:50,500 INFO L422 BasicCegarLoop]: trace histogram [88, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:50,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:33:50,500 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1876529309, now seen corresponding path program 24 times [2020-10-14 05:33:50,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:50,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835077921] [2020-10-14 05:33:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:55,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:55,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 05:33:55,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:33:55,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 05:33:55,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:55,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:55,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:33:55,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 05:33:55,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:33:55,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:56,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:33:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:56,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:33:56,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:56,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:56,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:56,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:56,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:33:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:56,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:56,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 05:33:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:56,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:33:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:56,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 05:33:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:56,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:56,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:33:56,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:56,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:56,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 05:33:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:33:56,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:33:56,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:33:56,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:33:56,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:33:56,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:33:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:33:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:33:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:33:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:33:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4240 backedges. 2667 proven. 253 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2020-10-14 05:33:56,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835077921] [2020-10-14 05:33:56,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:33:56,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:33:56,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799468017] [2020-10-14 05:33:56,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:33:56,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:33:56,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:33:56,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:33:56,113 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand 25 states. [2020-10-14 05:33:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:33:56,516 INFO L93 Difference]: Finished difference Result 249 states and 271 transitions. [2020-10-14 05:33:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:33:56,517 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 131 [2020-10-14 05:33:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:33:56,518 INFO L225 Difference]: With dead ends: 249 [2020-10-14 05:33:56,518 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 05:33:56,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:33:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 05:33:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-14 05:33:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 05:33:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2020-10-14 05:33:56,540 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 131 [2020-10-14 05:33:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:33:56,541 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2020-10-14 05:33:56,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:33:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2020-10-14 05:33:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 05:33:56,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:33:56,543 INFO L422 BasicCegarLoop]: trace histogram [92, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:33:56,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:33:56,543 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:33:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:33:56,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1703562795, now seen corresponding path program 25 times [2020-10-14 05:33:56,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:33:56,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325528785] [2020-10-14 05:33:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:33:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:33:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:33:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:01,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:01,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 05:34:01,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:34:01,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 05:34:01,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:01,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:34:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 05:34:01,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 05:34:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:02,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:02,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:02,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:02,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:34:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:02,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:02,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 05:34:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 05:34:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:02,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:02,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 05:34:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:02,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4614 backedges. 2902 proven. 276 refuted. 0 times theorem prover too weak. 1436 trivial. 0 not checked. [2020-10-14 05:34:02,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325528785] [2020-10-14 05:34:02,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:02,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:34:02,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243818179] [2020-10-14 05:34:02,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:34:02,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:02,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:34:02,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:34:02,152 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 26 states. [2020-10-14 05:34:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:02,566 INFO L93 Difference]: Finished difference Result 257 states and 279 transitions. [2020-10-14 05:34:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 05:34:02,566 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 135 [2020-10-14 05:34:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:02,567 INFO L225 Difference]: With dead ends: 257 [2020-10-14 05:34:02,568 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 05:34:02,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:34:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 05:34:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-14 05:34:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 05:34:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2020-10-14 05:34:02,590 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 135 [2020-10-14 05:34:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:02,590 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2020-10-14 05:34:02,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:34:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2020-10-14 05:34:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 05:34:02,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:02,592 INFO L422 BasicCegarLoop]: trace histogram [96, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:02,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:34:02,592 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:02,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1772205853, now seen corresponding path program 26 times [2020-10-14 05:34:02,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:02,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770987717] [2020-10-14 05:34:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:02,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:07,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:07,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 05:34:07,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:34:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 05:34:07,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:07,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:34:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 05:34:07,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:34:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,346 WARN L193 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 143 DAG size of output: 15 [2020-10-14 05:34:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:12,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:12,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:12,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:12,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 05:34:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:12,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 05:34:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:12,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:12,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:12,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:12,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 05:34:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:12,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:34:12,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 05:34:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:12,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:12,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5004 backedges. 3154 proven. 303 refuted. 0 times theorem prover too weak. 1547 trivial. 0 not checked. [2020-10-14 05:34:12,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770987717] [2020-10-14 05:34:12,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:12,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:34:12,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760517248] [2020-10-14 05:34:12,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:34:12,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:34:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:34:12,503 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 29 states. [2020-10-14 05:34:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:13,180 INFO L93 Difference]: Finished difference Result 269 states and 295 transitions. [2020-10-14 05:34:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:34:13,181 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 139 [2020-10-14 05:34:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:13,183 INFO L225 Difference]: With dead ends: 269 [2020-10-14 05:34:13,183 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 05:34:13,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:34:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 05:34:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-14 05:34:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 05:34:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2020-10-14 05:34:13,201 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 139 [2020-10-14 05:34:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:13,201 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2020-10-14 05:34:13,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:34:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2020-10-14 05:34:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 05:34:13,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:13,203 INFO L422 BasicCegarLoop]: trace histogram [100, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:13,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:34:13,203 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1108491349, now seen corresponding path program 27 times [2020-10-14 05:34:13,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:13,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849272873] [2020-10-14 05:34:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 05:34:18,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:34:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 05:34:18,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:34:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:34:18,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:34:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:18,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:18,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:18,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:18,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:18,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:34:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:18,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:18,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 05:34:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:18,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:18,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 05:34:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:18,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:18,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-14 05:34:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:18,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:18,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:18,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:18,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:18,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:18,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:18,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:18,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5410 backedges. 2040 proven. 325 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2020-10-14 05:34:18,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849272873] [2020-10-14 05:34:18,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:18,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:34:18,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272937529] [2020-10-14 05:34:18,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:34:18,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:18,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:34:18,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:34:18,875 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand 28 states. [2020-10-14 05:34:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:19,384 INFO L93 Difference]: Finished difference Result 273 states and 295 transitions. [2020-10-14 05:34:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:34:19,385 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 143 [2020-10-14 05:34:19,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:19,386 INFO L225 Difference]: With dead ends: 273 [2020-10-14 05:34:19,387 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 05:34:19,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:34:19,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 05:34:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-14 05:34:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 05:34:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 150 transitions. [2020-10-14 05:34:19,405 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 150 transitions. Word has length 143 [2020-10-14 05:34:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:19,405 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 150 transitions. [2020-10-14 05:34:19,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:34:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 150 transitions. [2020-10-14 05:34:19,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 05:34:19,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:19,407 INFO L422 BasicCegarLoop]: trace histogram [104, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:19,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:34:19,407 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash -174973539, now seen corresponding path program 28 times [2020-10-14 05:34:19,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:19,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349365453] [2020-10-14 05:34:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:24,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:24,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 05:34:24,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:34:24,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 05:34:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:24,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:34:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 05:34:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:34:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:25,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:25,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:25,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:25,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:25,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:34:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 05:34:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 05:34:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:25,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:25,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:25,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:25,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 05:34:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:25,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-14 05:34:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:25,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:25,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 3665 proven. 351 refuted. 0 times theorem prover too weak. 1816 trivial. 0 not checked. [2020-10-14 05:34:25,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349365453] [2020-10-14 05:34:25,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:25,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:34:25,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042663150] [2020-10-14 05:34:25,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:34:25,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:34:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:34:25,125 INFO L87 Difference]: Start difference. First operand 141 states and 150 transitions. Second operand 29 states. [2020-10-14 05:34:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:25,641 INFO L93 Difference]: Finished difference Result 281 states and 303 transitions. [2020-10-14 05:34:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:34:25,642 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 147 [2020-10-14 05:34:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:25,643 INFO L225 Difference]: With dead ends: 281 [2020-10-14 05:34:25,643 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 05:34:25,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:34:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 05:34:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-14 05:34:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 05:34:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2020-10-14 05:34:25,661 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 147 [2020-10-14 05:34:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:25,662 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2020-10-14 05:34:25,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:34:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2020-10-14 05:34:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 05:34:25,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:25,664 INFO L422 BasicCegarLoop]: trace histogram [108, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:25,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:34:25,664 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:25,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1293190869, now seen corresponding path program 29 times [2020-10-14 05:34:25,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:25,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310996247] [2020-10-14 05:34:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:25,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:25,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 05:34:30,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:34:30,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 05:34:30,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:30,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:30,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:34:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 05:34:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:34:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:31,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:31,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:31,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:31,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 05:34:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:31,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:31,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 05:34:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:31,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:31,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:31,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 05:34:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:31,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:31,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-14 05:34:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:31,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:31,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:31,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:31,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6270 backedges. 3940 proven. 378 refuted. 0 times theorem prover too weak. 1952 trivial. 0 not checked. [2020-10-14 05:34:31,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310996247] [2020-10-14 05:34:31,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:31,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:34:31,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504894403] [2020-10-14 05:34:31,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:34:31,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:31,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:34:31,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:34:31,455 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 30 states. [2020-10-14 05:34:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:32,029 INFO L93 Difference]: Finished difference Result 289 states and 311 transitions. [2020-10-14 05:34:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:34:32,030 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 151 [2020-10-14 05:34:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:32,031 INFO L225 Difference]: With dead ends: 289 [2020-10-14 05:34:32,031 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 05:34:32,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:34:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 05:34:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-14 05:34:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 05:34:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 158 transitions. [2020-10-14 05:34:32,050 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 158 transitions. Word has length 151 [2020-10-14 05:34:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:32,050 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 158 transitions. [2020-10-14 05:34:32,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:34:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 158 transitions. [2020-10-14 05:34:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 05:34:32,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:32,051 INFO L422 BasicCegarLoop]: trace histogram [112, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:32,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 05:34:32,051 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:32,052 INFO L82 PathProgramCache]: Analyzing trace with hash 671794205, now seen corresponding path program 30 times [2020-10-14 05:34:32,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:32,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921666168] [2020-10-14 05:34:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 05:34:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:34:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 05:34:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:37,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:34:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 05:34:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:34:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:46,135 WARN L193 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 143 DAG size of output: 15 [2020-10-14 05:34:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:46,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:46,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:46,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 05:34:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:46,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:46,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:46,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:46,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:46,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:46,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:46,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 05:34:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:46,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:46,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:46,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:46,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:46,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 05:34:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:46,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:46,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:46,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:34:46,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:46,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:34:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:34:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:34:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 05:34:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:46,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:46,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:46,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:46,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:46,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 4234 proven. 409 refuted. 0 times theorem prover too weak. 2081 trivial. 0 not checked. [2020-10-14 05:34:46,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921666168] [2020-10-14 05:34:46,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:46,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:34:46,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49729626] [2020-10-14 05:34:46,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:34:46,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:46,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:34:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:34:46,299 INFO L87 Difference]: Start difference. First operand 149 states and 158 transitions. Second operand 33 states. [2020-10-14 05:34:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:47,132 INFO L93 Difference]: Finished difference Result 301 states and 327 transitions. [2020-10-14 05:34:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:34:47,133 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 155 [2020-10-14 05:34:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:47,134 INFO L225 Difference]: With dead ends: 301 [2020-10-14 05:34:47,134 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 05:34:47,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=67, Invalid=1055, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:34:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 05:34:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2020-10-14 05:34:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 05:34:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2020-10-14 05:34:47,152 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 155 [2020-10-14 05:34:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:47,152 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2020-10-14 05:34:47,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:34:47,152 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2020-10-14 05:34:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 05:34:47,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:47,153 INFO L422 BasicCegarLoop]: trace histogram [116, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:47,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 05:34:47,154 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1080258219, now seen corresponding path program 31 times [2020-10-14 05:34:47,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:47,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068067772] [2020-10-14 05:34:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 05:34:52,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:34:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 05:34:52,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:34:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:34:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:34:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:52,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:52,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:34:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:52,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:52,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:52,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:52,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:52,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 05:34:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:52,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:52,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:52,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:52,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:52,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 05:34:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-14 05:34:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:53,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:53,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:53,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:53,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:53,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:53,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7194 backedges. 2712 proven. 435 refuted. 0 times theorem prover too weak. 4047 trivial. 0 not checked. [2020-10-14 05:34:53,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068067772] [2020-10-14 05:34:53,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:53,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:34:53,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331485062] [2020-10-14 05:34:53,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:34:53,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:53,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:34:53,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:53,021 INFO L87 Difference]: Start difference. First operand 153 states and 162 transitions. Second operand 32 states. [2020-10-14 05:34:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:34:53,683 INFO L93 Difference]: Finished difference Result 305 states and 327 transitions. [2020-10-14 05:34:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 05:34:53,684 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 159 [2020-10-14 05:34:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:34:53,684 INFO L225 Difference]: With dead ends: 305 [2020-10-14 05:34:53,685 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 05:34:53,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:34:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 05:34:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-10-14 05:34:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 05:34:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2020-10-14 05:34:53,699 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 159 [2020-10-14 05:34:53,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:34:53,700 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 166 transitions. [2020-10-14 05:34:53,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:34:53,700 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 166 transitions. [2020-10-14 05:34:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 05:34:53,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:34:53,701 INFO L422 BasicCegarLoop]: trace histogram [120, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:34:53,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 05:34:53,701 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:34:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:34:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1500228253, now seen corresponding path program 32 times [2020-10-14 05:34:53,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:34:53,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181702084] [2020-10-14 05:34:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:34:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 05:34:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:34:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-14 05:34:58,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:58,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:34:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 05:34:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:34:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:34:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:34:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 05:34:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:34:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:59,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 05:34:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 05:34:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:59,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:34:59,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:59,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 05:34:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:34:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:34:59,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:34:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:34:59,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:34:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7680 backedges. 4825 proven. 465 refuted. 0 times theorem prover too weak. 2390 trivial. 0 not checked. [2020-10-14 05:34:59,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181702084] [2020-10-14 05:34:59,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:34:59,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:34:59,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524829764] [2020-10-14 05:34:59,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:34:59,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:34:59,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:34:59,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:34:59,688 INFO L87 Difference]: Start difference. First operand 157 states and 166 transitions. Second operand 33 states. [2020-10-14 05:35:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:00,415 INFO L93 Difference]: Finished difference Result 313 states and 335 transitions. [2020-10-14 05:35:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:35:00,415 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 163 [2020-10-14 05:35:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:00,416 INFO L225 Difference]: With dead ends: 313 [2020-10-14 05:35:00,417 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 05:35:00,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:35:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 05:35:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-14 05:35:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 05:35:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-10-14 05:35:00,438 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 163 [2020-10-14 05:35:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:00,439 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-10-14 05:35:00,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:35:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-10-14 05:35:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 05:35:00,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:00,440 INFO L422 BasicCegarLoop]: trace histogram [124, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:00,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:35:00,440 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1714791467, now seen corresponding path program 33 times [2020-10-14 05:35:00,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:00,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442284245] [2020-10-14 05:35:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:00,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:05,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 05:35:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 05:35:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:06,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 05:35:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:06,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:06,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:06,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:06,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:06,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:06,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:06,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 05:35:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:06,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:06,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:06,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:06,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:06,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:06,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 05:35:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:06,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:06,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:06,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:06,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:06,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:06,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:06,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:06,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:06,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 05:35:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:06,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8182 backedges. 5140 proven. 496 refuted. 0 times theorem prover too weak. 2546 trivial. 0 not checked. [2020-10-14 05:35:06,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442284245] [2020-10-14 05:35:06,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:06,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:35:06,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600425782] [2020-10-14 05:35:06,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:35:06,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:06,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:35:06,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:06,502 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 34 states. [2020-10-14 05:35:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:07,240 INFO L93 Difference]: Finished difference Result 321 states and 343 transitions. [2020-10-14 05:35:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 05:35:07,241 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 167 [2020-10-14 05:35:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:07,242 INFO L225 Difference]: With dead ends: 321 [2020-10-14 05:35:07,242 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 05:35:07,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:35:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 05:35:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-10-14 05:35:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 05:35:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-10-14 05:35:07,265 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 167 [2020-10-14 05:35:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:07,265 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-10-14 05:35:07,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:35:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-10-14 05:35:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 05:35:07,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:07,266 INFO L422 BasicCegarLoop]: trace histogram [128, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:07,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:35:07,266 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash 638898461, now seen corresponding path program 34 times [2020-10-14 05:35:07,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:07,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752707803] [2020-10-14 05:35:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:07,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:12,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:12,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 05:35:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:16,979 WARN L193 SmtUtils]: Spent 3.52 s on a formula simplification. DAG size of input: 143 DAG size of output: 12 [2020-10-14 05:35:16,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:16,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:16,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:16,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:35:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 05:35:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:16,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 05:35:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:16,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:16,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:16,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:35:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-14 05:35:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:17,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:17,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:17,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:17,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:17,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:17,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:17,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8700 backedges. 5474 proven. 531 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2020-10-14 05:35:17,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752707803] [2020-10-14 05:35:17,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:17,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 05:35:17,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161411356] [2020-10-14 05:35:17,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 05:35:17,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:17,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 05:35:17,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1253, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:35:17,157 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 37 states. [2020-10-14 05:35:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:18,140 INFO L93 Difference]: Finished difference Result 333 states and 359 transitions. [2020-10-14 05:35:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:35:18,141 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 171 [2020-10-14 05:35:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:18,142 INFO L225 Difference]: With dead ends: 333 [2020-10-14 05:35:18,142 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 05:35:18,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=83, Invalid=1323, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:35:18,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 05:35:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2020-10-14 05:35:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 05:35:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 178 transitions. [2020-10-14 05:35:18,164 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 178 transitions. Word has length 171 [2020-10-14 05:35:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:18,164 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 178 transitions. [2020-10-14 05:35:18,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 05:35:18,165 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 178 transitions. [2020-10-14 05:35:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 05:35:18,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:18,166 INFO L422 BasicCegarLoop]: trace histogram [132, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:18,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:35:18,166 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash -675420587, now seen corresponding path program 35 times [2020-10-14 05:35:18,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:18,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077450573] [2020-10-14 05:35:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:23,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:23,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 05:35:23,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:35:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 05:35:23,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:23,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:35:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:35:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:35:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:24,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:35:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 05:35:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 05:35:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:24,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:24,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 05:35:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:24,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:24,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:24,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:24,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9234 backedges. 3480 proven. 561 refuted. 0 times theorem prover too weak. 5193 trivial. 0 not checked. [2020-10-14 05:35:24,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077450573] [2020-10-14 05:35:24,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:24,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:35:24,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930293242] [2020-10-14 05:35:24,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:35:24,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:35:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1158, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:35:24,241 INFO L87 Difference]: Start difference. First operand 169 states and 178 transitions. Second operand 36 states. [2020-10-14 05:35:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:25,073 INFO L93 Difference]: Finished difference Result 337 states and 359 transitions. [2020-10-14 05:35:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 05:35:25,074 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 175 [2020-10-14 05:35:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:25,076 INFO L225 Difference]: With dead ends: 337 [2020-10-14 05:35:25,076 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 05:35:25,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=1158, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:35:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 05:35:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-10-14 05:35:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 05:35:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2020-10-14 05:35:25,106 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 175 [2020-10-14 05:35:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:25,107 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2020-10-14 05:35:25,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:35:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2020-10-14 05:35:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 05:35:25,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:25,108 INFO L422 BasicCegarLoop]: trace histogram [136, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:25,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 05:35:25,108 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:25,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1852192669, now seen corresponding path program 36 times [2020-10-14 05:35:25,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:25,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855788980] [2020-10-14 05:35:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:25,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:30,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 05:35:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:35:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:35:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 05:35:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 05:35:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:31,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 05:35:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:31,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:31,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:31,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-14 05:35:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:31,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:31,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:35:31,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:35:31,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:31,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 05:35:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:35:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9784 backedges. 6145 proven. 595 refuted. 0 times theorem prover too weak. 3044 trivial. 0 not checked. [2020-10-14 05:35:31,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855788980] [2020-10-14 05:35:31,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:35:31,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 05:35:31,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930223961] [2020-10-14 05:35:31,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 05:35:31,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:31,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 05:35:31,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:35:31,247 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand 37 states. [2020-10-14 05:35:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:32,154 INFO L93 Difference]: Finished difference Result 345 states and 367 transitions. [2020-10-14 05:35:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:35:32,158 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 179 [2020-10-14 05:35:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:32,159 INFO L225 Difference]: With dead ends: 345 [2020-10-14 05:35:32,159 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 05:35:32,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:35:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 05:35:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2020-10-14 05:35:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 05:35:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 186 transitions. [2020-10-14 05:35:32,187 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 186 transitions. Word has length 179 [2020-10-14 05:35:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:32,187 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 186 transitions. [2020-10-14 05:35:32,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 05:35:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 186 transitions. [2020-10-14 05:35:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-14 05:35:32,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:32,189 INFO L422 BasicCegarLoop]: trace histogram [140, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:32,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 05:35:32,189 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:32,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:32,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1905733845, now seen corresponding path program 37 times [2020-10-14 05:35:32,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:32,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330195066] [2020-10-14 05:35:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:32,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:32,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:33,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking...