/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/array-programs/copysome1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:06:30,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:06:30,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:06:31,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:06:31,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:06:31,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:06:31,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:06:31,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:06:31,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:06:31,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:06:31,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:06:31,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:06:31,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:06:31,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:06:31,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:06:31,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:06:31,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:06:31,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:06:31,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:06:31,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:06:31,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:06:31,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:06:31,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:06:31,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:06:31,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:06:31,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:06:31,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:06:31,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:06:31,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:06:31,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:06:31,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:06:31,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:06:31,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:06:31,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:06:31,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:06:31,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:06:31,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:06:31,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:06:31,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:06:31,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:06:31,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:06:31,108 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 [2020-10-29 04:06:31,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:06:31,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:06:31,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:06:31,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:06:31,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:06:31,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:06:31,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:06:31,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:06:31,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:06:31,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:06:31,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:06:31,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:06:31,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:06:31,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:06:31,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:06:31,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:06:31,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:06:31,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:06:31,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:06:31,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:06:31,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:06:31,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:06:31,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:06:31,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:06:31,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:06:31,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:06:31,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:06:31,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:06:31,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:06:31,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:06:31,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:06:31,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:06:31,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:06:31,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:06:31,597 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:06:31,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome1-2.i [2020-10-29 04:06:31,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a6061e3/0ce799a2c5da46b79e67903200463d2f/FLAG39660a88d [2020-10-29 04:06:32,368 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:06:32,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/copysome1-2.i [2020-10-29 04:06:32,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a6061e3/0ce799a2c5da46b79e67903200463d2f/FLAG39660a88d [2020-10-29 04:06:32,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a6061e3/0ce799a2c5da46b79e67903200463d2f [2020-10-29 04:06:32,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:06:32,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:06:32,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:06:32,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:06:32,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:06:32,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:06:32" (1/1) ... [2020-10-29 04:06:32,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d7d9d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:32, skipping insertion in model container [2020-10-29 04:06:32,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:06:32" (1/1) ... [2020-10-29 04:06:32,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:06:32,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:06:33,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:06:33,022 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:06:33,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:06:33,067 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:06:33,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33 WrapperNode [2020-10-29 04:06:33,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:06:33,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:06:33,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:06:33,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:06:33,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (1/1) ... [2020-10-29 04:06:33,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (1/1) ... [2020-10-29 04:06:33,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (1/1) ... [2020-10-29 04:06:33,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (1/1) ... [2020-10-29 04:06:33,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (1/1) ... [2020-10-29 04:06:33,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (1/1) ... [2020-10-29 04:06:33,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (1/1) ... [2020-10-29 04:06:33,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:06:33,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:06:33,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:06:33,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:06:33,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (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 [2020-10-29 04:06:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:06:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:06:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:06:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:06:33,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 04:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 04:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:06:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:06:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:06:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:06:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:06:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:06:33,559 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:06:33,560 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 04:06:33,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:06:33 BoogieIcfgContainer [2020-10-29 04:06:33,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:06:33,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:06:33,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:06:33,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:06:33,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:06:32" (1/3) ... [2020-10-29 04:06:33,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430f07c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:06:33, skipping insertion in model container [2020-10-29 04:06:33,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:06:33" (2/3) ... [2020-10-29 04:06:33,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430f07c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:06:33, skipping insertion in model container [2020-10-29 04:06:33,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:06:33" (3/3) ... [2020-10-29 04:06:33,600 INFO L111 eAbstractionObserver]: Analyzing ICFG copysome1-2.i [2020-10-29 04:06:33,614 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:06:33,618 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:06:33,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:06:33,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:06:33,663 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:06:33,663 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:06:33,663 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:06:33,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:06:33,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:06:33,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:06:33,664 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:06:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-29 04:06:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 04:06:33,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:33,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:33,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1436436000, now seen corresponding path program 1 times [2020-10-29 04:06:33,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:33,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367916051] [2020-10-29 04:06:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:34,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:34,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:06:34,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:34,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 04:06:34,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:34,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 04:06:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:06:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:34,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:34,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:34,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:06:34,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:34,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:06:34,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367916051] [2020-10-29 04:06:34,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:06:34,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:06:34,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101978801] [2020-10-29 04:06:34,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 04:06:34,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:34,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 04:06:34,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:06:34,277 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-10-29 04:06:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:34,403 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-29 04:06:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 04:06:34,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-29 04:06:34,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:34,415 INFO L225 Difference]: With dead ends: 57 [2020-10-29 04:06:34,415 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 04:06:34,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:06:34,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 04:06:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 04:06:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 04:06:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-29 04:06:34,472 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2020-10-29 04:06:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:34,473 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-29 04:06:34,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 04:06:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-29 04:06:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 04:06:34,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:34,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:34,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:06:34,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:34,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1471379055, now seen corresponding path program 1 times [2020-10-29 04:06:34,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:34,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053895229] [2020-10-29 04:06:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:34,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:34,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:06:34,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-29 04:06:34,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:34,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:34,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:34,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:34,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:06:34,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:34,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:34,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:06:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:34,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:34,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:06:34,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053895229] [2020-10-29 04:06:34,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:06:34,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:06:34,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455552703] [2020-10-29 04:06:34,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:06:34,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:06:34,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:06:34,900 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-29 04:06:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:35,011 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-29 04:06:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:06:35,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-29 04:06:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:35,013 INFO L225 Difference]: With dead ends: 49 [2020-10-29 04:06:35,013 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 04:06:35,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:06:35,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 04:06:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-10-29 04:06:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 04:06:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-29 04:06:35,024 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2020-10-29 04:06:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:35,025 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-29 04:06:35,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:06:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-29 04:06:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:06:35,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:35,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:35,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:06:35,027 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:35,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:35,028 INFO L82 PathProgramCache]: Analyzing trace with hash 435813880, now seen corresponding path program 1 times [2020-10-29 04:06:35,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:35,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037139166] [2020-10-29 04:06:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:36,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:36,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:06:36,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:06:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-29 04:06:36,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:36,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:06:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 04:06:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:06:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:36,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:36,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:36,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:06:36,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:36,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:36,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:36,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:06:36,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037139166] [2020-10-29 04:06:36,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:36,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:06:36,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827408223] [2020-10-29 04:06:36,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:06:36,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:36,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:06:36,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:06:36,349 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 9 states. [2020-10-29 04:06:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:36,723 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-29 04:06:36,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:06:36,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-29 04:06:36,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:36,727 INFO L225 Difference]: With dead ends: 54 [2020-10-29 04:06:36,727 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 04:06:36,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:06:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 04:06:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2020-10-29 04:06:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 04:06:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-29 04:06:36,744 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 23 [2020-10-29 04:06:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:36,744 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-29 04:06:36,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:06:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-29 04:06:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:06:36,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:36,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:36,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:06:36,746 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:36,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash 693979318, now seen corresponding path program 1 times [2020-10-29 04:06:36,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:36,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240824632] [2020-10-29 04:06:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:36,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:37,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:06:37,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:06:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 04:06:37,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:37,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:06:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:06:37,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:37,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:37,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:37,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:06:37,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:37,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:06:37,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240824632] [2020-10-29 04:06:37,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:06:37,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:06:37,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207634431] [2020-10-29 04:06:37,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:06:37,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:37,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:06:37,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:06:37,218 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 5 states. [2020-10-29 04:06:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:37,320 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2020-10-29 04:06:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:06:37,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 04:06:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:37,323 INFO L225 Difference]: With dead ends: 59 [2020-10-29 04:06:37,323 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 04:06:37,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:06:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 04:06:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-29 04:06:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 04:06:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-29 04:06:37,333 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2020-10-29 04:06:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:37,333 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-29 04:06:37,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:06:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-29 04:06:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 04:06:37,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:37,335 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:37,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:06:37,335 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1206983990, now seen corresponding path program 1 times [2020-10-29 04:06:37,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:37,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306159584] [2020-10-29 04:06:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:06:37,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:06:37,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-29 04:06:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:37,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:06:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:37,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:06:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:37,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:37,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:06:37,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:37,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:06:37,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306159584] [2020-10-29 04:06:37,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:37,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:06:37,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127700419] [2020-10-29 04:06:37,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:06:37,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:37,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:06:37,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:06:37,762 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2020-10-29 04:06:37,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:37,864 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2020-10-29 04:06:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:06:37,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-29 04:06:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:37,866 INFO L225 Difference]: With dead ends: 79 [2020-10-29 04:06:37,866 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 04:06:37,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:06:37,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 04:06:37,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-29 04:06:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 04:06:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-29 04:06:37,876 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 26 [2020-10-29 04:06:37,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:37,877 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-29 04:06:37,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:06:37,877 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-29 04:06:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 04:06:37,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:37,878 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:37,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:06:37,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:37,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:37,879 INFO L82 PathProgramCache]: Analyzing trace with hash -943322827, now seen corresponding path program 2 times [2020-10-29 04:06:37,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:37,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276776426] [2020-10-29 04:06:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:39,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:39,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 04:06:39,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:06:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-29 04:06:39,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:39,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:06:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:06:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:40,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:40,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:06:40,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:40,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:06:40,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276776426] [2020-10-29 04:06:40,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:40,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:06:40,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861674553] [2020-10-29 04:06:40,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:06:40,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:40,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:06:40,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:06:40,181 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 10 states. [2020-10-29 04:06:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:40,488 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-29 04:06:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:06:40,489 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-29 04:06:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:40,490 INFO L225 Difference]: With dead ends: 57 [2020-10-29 04:06:40,490 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 04:06:40,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:06:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 04:06:40,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2020-10-29 04:06:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 04:06:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-29 04:06:40,507 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 28 [2020-10-29 04:06:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:40,507 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-29 04:06:40,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:06:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-29 04:06:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:06:40,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:40,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:40,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:06:40,509 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:40,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1411468691, now seen corresponding path program 2 times [2020-10-29 04:06:40,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:40,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583913911] [2020-10-29 04:06:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:42,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:42,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:06:42,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:06:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-29 04:06:42,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:42,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:06:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 04:06:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 04:06:42,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:43,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:43,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:43,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:06:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:43,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:06:43,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583913911] [2020-10-29 04:06:43,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:43,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:06:43,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229176554] [2020-10-29 04:06:43,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:06:43,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:43,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:06:43,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:06:43,014 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 11 states. [2020-10-29 04:06:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:43,482 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-29 04:06:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:06:43,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-29 04:06:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:43,484 INFO L225 Difference]: With dead ends: 71 [2020-10-29 04:06:43,484 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 04:06:43,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:06:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 04:06:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2020-10-29 04:06:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 04:06:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-29 04:06:43,497 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 31 [2020-10-29 04:06:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:43,497 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-29 04:06:43,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:06:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-29 04:06:43,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:06:43,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:43,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:43,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:06:43,500 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:43,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1603634927, now seen corresponding path program 1 times [2020-10-29 04:06:43,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:43,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717757823] [2020-10-29 04:06:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:43,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:45,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:06:45,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:06:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1939 [2020-10-29 04:06:45,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:45,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:45,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:06:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:06:45,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:45,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:45,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:06:45,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:45,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:06:45,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717757823] [2020-10-29 04:06:45,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:45,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:06:45,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90827166] [2020-10-29 04:06:45,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:06:45,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:06:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:06:45,525 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 6 states. [2020-10-29 04:06:45,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:45,636 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2020-10-29 04:06:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:06:45,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-29 04:06:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:45,640 INFO L225 Difference]: With dead ends: 98 [2020-10-29 04:06:45,641 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 04:06:45,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:06:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 04:06:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-29 04:06:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 04:06:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-29 04:06:45,660 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 31 [2020-10-29 04:06:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:45,661 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-29 04:06:45,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:06:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-29 04:06:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 04:06:45,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:45,664 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:45,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:06:45,665 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:45,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2108874293, now seen corresponding path program 3 times [2020-10-29 04:06:45,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:45,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918780970] [2020-10-29 04:06:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:46,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:47,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:06:47,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:06:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2000 [2020-10-29 04:06:47,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:47,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:06:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 04:06:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:47,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:47,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:47,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:47,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:06:47,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:47,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:06:47,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918780970] [2020-10-29 04:06:47,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:47,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:06:47,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901497159] [2020-10-29 04:06:47,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:06:47,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:47,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:06:47,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:06:47,763 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 5 states. [2020-10-29 04:06:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:47,861 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-10-29 04:06:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:06:47,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-29 04:06:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:47,864 INFO L225 Difference]: With dead ends: 86 [2020-10-29 04:06:47,864 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 04:06:47,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:06:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 04:06:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-10-29 04:06:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 04:06:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-10-29 04:06:47,892 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 34 [2020-10-29 04:06:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:47,893 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-10-29 04:06:47,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:06:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-10-29 04:06:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 04:06:47,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:47,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:47,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:06:47,898 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:47,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1601964908, now seen corresponding path program 1 times [2020-10-29 04:06:47,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:47,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632934029] [2020-10-29 04:06:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:50,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 04:06:50,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:06:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2704 [2020-10-29 04:06:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:50,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:06:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:06:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:50,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:50,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:50,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:06:50,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:50,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:50,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:06:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:50,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:50,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:06:50,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:50,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:50,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:06:50,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632934029] [2020-10-29 04:06:50,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:50,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:06:50,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283476757] [2020-10-29 04:06:50,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:06:50,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:50,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:06:50,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:06:50,960 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 12 states. [2020-10-29 04:06:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:51,386 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-29 04:06:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:06:51,387 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-29 04:06:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:51,389 INFO L225 Difference]: With dead ends: 93 [2020-10-29 04:06:51,389 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 04:06:51,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:06:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 04:06:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2020-10-29 04:06:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 04:06:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-29 04:06:51,407 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 40 [2020-10-29 04:06:51,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:51,407 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-29 04:06:51,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:06:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-29 04:06:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 04:06:51,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:51,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:51,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:06:51,415 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:51,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1735978414, now seen corresponding path program 1 times [2020-10-29 04:06:51,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:51,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591239996] [2020-10-29 04:06:51,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:52,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 04:06:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:06:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-10-29 04:06:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:52,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:06:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:06:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:06:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:52,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:52,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:52,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:06:52,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:52,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:52,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:52,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:52,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:06:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:52,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:52,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:52,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:06:52,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:52,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:06:52,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591239996] [2020-10-29 04:06:52,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:52,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:06:52,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988999524] [2020-10-29 04:06:52,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:06:52,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:52,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:06:52,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:06:52,761 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 6 states. [2020-10-29 04:06:52,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:52,861 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-29 04:06:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:06:52,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-29 04:06:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:52,862 INFO L225 Difference]: With dead ends: 84 [2020-10-29 04:06:52,862 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 04:06:52,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:06:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 04:06:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-29 04:06:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 04:06:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-29 04:06:52,870 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 40 [2020-10-29 04:06:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:52,871 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-29 04:06:52,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:06:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-29 04:06:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 04:06:52,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:52,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:52,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:06:52,872 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:52,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1714014517, now seen corresponding path program 2 times [2020-10-29 04:06:52,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:52,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60837847] [2020-10-29 04:06:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:52,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:53,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:53,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 04:06:53,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-29 04:06:53,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:53,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:06:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 04:06:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 04:06:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:53,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:53,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:53,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:06:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:53,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:06:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:53,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:53,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:53,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:06:53,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:53,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 04:06:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:06:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:53,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 04:06:53,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60837847] [2020-10-29 04:06:53,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:53,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:06:53,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730974366] [2020-10-29 04:06:53,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:06:53,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:53,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:06:53,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:06:53,376 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-10-29 04:06:53,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:53,494 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-29 04:06:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:06:53,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 04:06:53,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:53,496 INFO L225 Difference]: With dead ends: 101 [2020-10-29 04:06:53,496 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 04:06:53,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:06:53,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 04:06:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-29 04:06:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 04:06:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-29 04:06:53,504 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 46 [2020-10-29 04:06:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:53,504 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-29 04:06:53,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:06:53,504 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-29 04:06:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:06:53,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:53,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:53,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:06:53,506 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:53,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1202420588, now seen corresponding path program 3 times [2020-10-29 04:06:53,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:53,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580203900] [2020-10-29 04:06:53,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:55,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:06:55,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:06:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-10-29 04:06:55,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:55,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:06:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:06:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 04:06:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:55,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:55,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:55,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:55,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:06:55,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:55,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:06:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:06:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:55,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:55,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:55,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:06:55,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:55,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:06:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:55,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:55,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:55,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:06:55,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:55,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:06:55,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580203900] [2020-10-29 04:06:55,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:55,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:06:55,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694919507] [2020-10-29 04:06:55,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:06:55,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:55,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:06:55,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:06:55,900 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 13 states. [2020-10-29 04:06:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:56,541 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-29 04:06:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:06:56,542 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-29 04:06:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:56,543 INFO L225 Difference]: With dead ends: 93 [2020-10-29 04:06:56,543 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 04:06:56,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:06:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 04:06:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2020-10-29 04:06:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 04:06:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-29 04:06:56,554 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 51 [2020-10-29 04:06:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:56,555 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-29 04:06:56,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:06:56,555 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-29 04:06:56,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 04:06:56,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:56,556 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:56,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:06:56,557 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:56,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2136635730, now seen corresponding path program 1 times [2020-10-29 04:06:56,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:56,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081311866] [2020-10-29 04:06:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:59,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:59,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:06:59,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:06:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3148 [2020-10-29 04:06:59,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:59,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:06:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:06:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:06:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:59,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:59,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:59,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:06:59,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:59,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:59,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:06:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:59,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:59,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:59,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:06:59,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:59,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:59,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:06:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:59,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:59,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:59,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:59,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:06:59,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:59,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:06:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:59,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:06:59,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 04:06:59,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081311866] [2020-10-29 04:06:59,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:59,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:06:59,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385723527] [2020-10-29 04:06:59,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:06:59,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:59,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:06:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:06:59,812 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 6 states. [2020-10-29 04:06:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:59,932 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2020-10-29 04:06:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:06:59,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-29 04:06:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:59,934 INFO L225 Difference]: With dead ends: 97 [2020-10-29 04:06:59,934 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 04:06:59,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:06:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 04:06:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-29 04:06:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 04:06:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-10-29 04:06:59,945 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 54 [2020-10-29 04:06:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:59,945 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-10-29 04:06:59,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:06:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-10-29 04:06:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 04:06:59,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:59,947 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:59,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:06:59,947 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash -700400905, now seen corresponding path program 4 times [2020-10-29 04:06:59,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:59,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049048733] [2020-10-29 04:06:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:04,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:04,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:07:04,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:07:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4091 [2020-10-29 04:07:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:04,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:07:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 04:07:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:04,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:04,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:04,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:04,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:04,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:07:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:04,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:04,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:04,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:04,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:04,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:04,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:07:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:04,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:04,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:04,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:04,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:04,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:04,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:07:04,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049048733] [2020-10-29 04:07:04,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:04,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:07:04,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923365725] [2020-10-29 04:07:04,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:07:04,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:04,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:07:04,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:07:04,708 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 14 states. [2020-10-29 04:07:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:05,613 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2020-10-29 04:07:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:07:05,616 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 04:07:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:05,617 INFO L225 Difference]: With dead ends: 117 [2020-10-29 04:07:05,617 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 04:07:05,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:07:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 04:07:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2020-10-29 04:07:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 04:07:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-10-29 04:07:05,644 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 54 [2020-10-29 04:07:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:05,645 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-10-29 04:07:05,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:07:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-10-29 04:07:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 04:07:05,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:05,646 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:05,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:07:05,646 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash -772787463, now seen corresponding path program 2 times [2020-10-29 04:07:05,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:05,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525001715] [2020-10-29 04:07:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:05,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:05,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:07:08,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2476 [2020-10-29 04:07:08,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:08,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:07:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:07:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:08,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:08,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:08,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:07:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:08,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:08,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:08,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:08,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:08,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:07:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:08,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:08,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:08,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:08,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:08,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 04:07:08,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525001715] [2020-10-29 04:07:08,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:08,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:07:08,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851226925] [2020-10-29 04:07:08,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:07:08,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:08,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:07:08,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:07:08,237 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 7 states. [2020-10-29 04:07:08,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:08,408 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2020-10-29 04:07:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:07:08,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-29 04:07:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:08,416 INFO L225 Difference]: With dead ends: 147 [2020-10-29 04:07:08,416 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 04:07:08,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:07:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 04:07:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2020-10-29 04:07:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 04:07:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2020-10-29 04:07:08,436 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 54 [2020-10-29 04:07:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:08,436 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2020-10-29 04:07:08,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:07:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2020-10-29 04:07:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 04:07:08,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:08,440 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:08,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:07:08,440 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:08,441 INFO L82 PathProgramCache]: Analyzing trace with hash -502516110, now seen corresponding path program 3 times [2020-10-29 04:07:08,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:08,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530846702] [2020-10-29 04:07:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3339 [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:07:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:11,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:11,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:11,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:11,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:11,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:07:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:11,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:11,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:11,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:11,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:11,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:11,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:11,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:11,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:11,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:07:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:11,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:11,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:11,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:11,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:11,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:11,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-29 04:07:11,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530846702] [2020-10-29 04:07:11,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:11,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:07:11,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820990910] [2020-10-29 04:07:11,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:07:11,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:11,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:07:11,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:11,909 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 8 states. [2020-10-29 04:07:12,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:12,178 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2020-10-29 04:07:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:07:12,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-29 04:07:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:12,181 INFO L225 Difference]: With dead ends: 180 [2020-10-29 04:07:12,182 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 04:07:12,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:07:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 04:07:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2020-10-29 04:07:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 04:07:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2020-10-29 04:07:12,212 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 57 [2020-10-29 04:07:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:12,212 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2020-10-29 04:07:12,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:07:12,213 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2020-10-29 04:07:12,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 04:07:12,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:12,214 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:12,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:07:12,215 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:12,216 INFO L82 PathProgramCache]: Analyzing trace with hash -997244997, now seen corresponding path program 4 times [2020-10-29 04:07:12,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:12,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194111784] [2020-10-29 04:07:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:12,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 04:07:17,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4897 [2020-10-29 04:07:17,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:07:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 04:07:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:07:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:17,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:17,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:17,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:17,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:17,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 04:07:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:17,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:17,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:17,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 04:07:17,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194111784] [2020-10-29 04:07:17,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:17,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:07:17,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736122457] [2020-10-29 04:07:17,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:07:17,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:17,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:07:17,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:07:17,251 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 9 states. [2020-10-29 04:07:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:17,530 INFO L93 Difference]: Finished difference Result 163 states and 185 transitions. [2020-10-29 04:07:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:07:17,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-29 04:07:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:17,533 INFO L225 Difference]: With dead ends: 163 [2020-10-29 04:07:17,533 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 04:07:17,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:07:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 04:07:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2020-10-29 04:07:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 04:07:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2020-10-29 04:07:17,553 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 62 [2020-10-29 04:07:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:17,554 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2020-10-29 04:07:17,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:07:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2020-10-29 04:07:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 04:07:17,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:17,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:17,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:07:17,560 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:17,561 INFO L82 PathProgramCache]: Analyzing trace with hash -279142127, now seen corresponding path program 5 times [2020-10-29 04:07:17,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:17,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990643550] [2020-10-29 04:07:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:17,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2403 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 04:07:20,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:20,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:20,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:20,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:20,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:20,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 04:07:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 04:07:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:07:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:20,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:20,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 04:07:20,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990643550] [2020-10-29 04:07:20,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:20,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:07:20,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560767976] [2020-10-29 04:07:20,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:07:20,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:07:20,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:07:20,412 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand 15 states. [2020-10-29 04:07:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:21,333 INFO L93 Difference]: Finished difference Result 159 states and 187 transitions. [2020-10-29 04:07:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:07:21,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-29 04:07:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:21,338 INFO L225 Difference]: With dead ends: 159 [2020-10-29 04:07:21,339 INFO L226 Difference]: Without dead ends: 155 [2020-10-29 04:07:21,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:07:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-29 04:07:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 132. [2020-10-29 04:07:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-29 04:07:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-10-29 04:07:21,360 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 65 [2020-10-29 04:07:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:21,361 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-10-29 04:07:21,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:07:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-10-29 04:07:21,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 04:07:21,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:21,362 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:21,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:07:21,363 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:21,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:21,363 INFO L82 PathProgramCache]: Analyzing trace with hash -52831632, now seen corresponding path program 5 times [2020-10-29 04:07:21,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:21,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713154545] [2020-10-29 04:07:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:07:26,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:26,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:26,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:26,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:26,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 04:07:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:26,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:07:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 63 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 04:07:26,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713154545] [2020-10-29 04:07:26,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:26,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:07:26,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460146955] [2020-10-29 04:07:26,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:07:26,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:26,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:07:26,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:07:26,490 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 10 states. [2020-10-29 04:07:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:26,708 INFO L93 Difference]: Finished difference Result 239 states and 283 transitions. [2020-10-29 04:07:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:07:26,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-29 04:07:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:26,710 INFO L225 Difference]: With dead ends: 239 [2020-10-29 04:07:26,710 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 04:07:26,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:07:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 04:07:26,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2020-10-29 04:07:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-29 04:07:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2020-10-29 04:07:26,724 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 65 [2020-10-29 04:07:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:26,724 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2020-10-29 04:07:26,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:07:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2020-10-29 04:07:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 04:07:26,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:26,726 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:26,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:07:26,726 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:26,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash 458317018, now seen corresponding path program 6 times [2020-10-29 04:07:26,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:26,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200090879] [2020-10-29 04:07:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:27,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4672 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:07:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:31,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:31,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:07:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:31,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:07:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:31,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:31,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:31,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 04:07:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 04:07:31,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200090879] [2020-10-29 04:07:31,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:31,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:07:31,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928318540] [2020-10-29 04:07:31,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:07:31,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:31,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:07:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:07:31,988 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 16 states. [2020-10-29 04:07:32,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:32,904 INFO L93 Difference]: Finished difference Result 204 states and 244 transitions. [2020-10-29 04:07:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:07:32,905 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-29 04:07:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:32,906 INFO L225 Difference]: With dead ends: 204 [2020-10-29 04:07:32,907 INFO L226 Difference]: Without dead ends: 200 [2020-10-29 04:07:32,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:07:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-29 04:07:32,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2020-10-29 04:07:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-29 04:07:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 227 transitions. [2020-10-29 04:07:32,931 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 227 transitions. Word has length 70 [2020-10-29 04:07:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:32,931 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 227 transitions. [2020-10-29 04:07:32,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:07:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 227 transitions. [2020-10-29 04:07:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 04:07:32,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:32,933 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:32,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:07:32,933 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:32,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:32,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1329967357, now seen corresponding path program 6 times [2020-10-29 04:07:32,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:32,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282683363] [2020-10-29 04:07:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:34,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 04:07:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:07:37,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:37,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:07:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:07:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:38,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:38,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:38,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:38,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:07:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:07:38,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:38,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 04:07:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:38,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:38,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:38,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:38,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-29 04:07:38,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282683363] [2020-10-29 04:07:38,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:38,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:07:38,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835750153] [2020-10-29 04:07:38,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:07:38,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:38,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:07:38,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:07:38,088 INFO L87 Difference]: Start difference. First operand 189 states and 227 transitions. Second operand 11 states. [2020-10-29 04:07:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:38,395 INFO L93 Difference]: Finished difference Result 384 states and 472 transitions. [2020-10-29 04:07:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:07:38,395 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-29 04:07:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:38,397 INFO L225 Difference]: With dead ends: 384 [2020-10-29 04:07:38,397 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 04:07:38,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:07:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 04:07:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 203. [2020-10-29 04:07:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-29 04:07:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 245 transitions. [2020-10-29 04:07:38,421 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 245 transitions. Word has length 70 [2020-10-29 04:07:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:38,422 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 245 transitions. [2020-10-29 04:07:38,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:07:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 245 transitions. [2020-10-29 04:07:38,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 04:07:38,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:38,423 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:38,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:07:38,424 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:38,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:38,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1787948492, now seen corresponding path program 7 times [2020-10-29 04:07:38,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:38,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287782716] [2020-10-29 04:07:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 04:07:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:43,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:43,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:43,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:43,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:07:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:07:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:43,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:43,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:43,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:43,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:43,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 110 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-29 04:07:43,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287782716] [2020-10-29 04:07:43,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:43,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:07:43,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979399050] [2020-10-29 04:07:43,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:07:43,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:43,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:07:43,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:07:43,621 INFO L87 Difference]: Start difference. First operand 203 states and 245 transitions. Second operand 12 states. [2020-10-29 04:07:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:43,970 INFO L93 Difference]: Finished difference Result 420 states and 520 transitions. [2020-10-29 04:07:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:07:43,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-29 04:07:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:43,974 INFO L225 Difference]: With dead ends: 420 [2020-10-29 04:07:43,975 INFO L226 Difference]: Without dead ends: 236 [2020-10-29 04:07:43,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:07:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-29 04:07:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 219. [2020-10-29 04:07:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 04:07:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 265 transitions. [2020-10-29 04:07:44,019 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 265 transitions. Word has length 75 [2020-10-29 04:07:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:44,019 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 265 transitions. [2020-10-29 04:07:44,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:07:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 265 transitions. [2020-10-29 04:07:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 04:07:44,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:44,022 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:44,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:07:44,022 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash 590160899, now seen corresponding path program 8 times [2020-10-29 04:07:44,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:44,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212390941] [2020-10-29 04:07:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 04:07:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:49,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:49,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:07:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:49,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:49,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 04:07:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:49,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:49,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:49,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 4 proven. 138 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 04:07:49,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212390941] [2020-10-29 04:07:49,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:49,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:07:49,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080148027] [2020-10-29 04:07:49,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:07:49,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:49,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:07:49,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:07:49,251 INFO L87 Difference]: Start difference. First operand 219 states and 265 transitions. Second operand 13 states. [2020-10-29 04:07:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:49,650 INFO L93 Difference]: Finished difference Result 340 states and 411 transitions. [2020-10-29 04:07:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:07:49,654 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-10-29 04:07:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:49,656 INFO L225 Difference]: With dead ends: 340 [2020-10-29 04:07:49,656 INFO L226 Difference]: Without dead ends: 251 [2020-10-29 04:07:49,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:07:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-29 04:07:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 231. [2020-10-29 04:07:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-29 04:07:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 281 transitions. [2020-10-29 04:07:49,680 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 281 transitions. Word has length 82 [2020-10-29 04:07:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:49,680 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 281 transitions. [2020-10-29 04:07:49,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:07:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 281 transitions. [2020-10-29 04:07:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 04:07:49,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:49,682 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:49,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:07:49,682 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:49,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1528680152, now seen corresponding path program 9 times [2020-10-29 04:07:49,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:49,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808768579] [2020-10-29 04:07:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:49,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:54,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 04:07:54,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:07:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 04:07:54,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:54,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:07:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:07:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 04:07:54,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:54,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:54,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:54,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:54,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:54,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:54,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:54,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:54,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:54,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 04:07:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:54,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:07:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:54,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:54,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:54,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:07:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:54,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:07:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 4 proven. 169 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 04:07:54,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808768579] [2020-10-29 04:07:54,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:54,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:07:54,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195824040] [2020-10-29 04:07:54,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:07:54,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:54,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:07:54,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:07:54,900 INFO L87 Difference]: Start difference. First operand 231 states and 281 transitions. Second operand 14 states. [2020-10-29 04:07:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:55,295 INFO L93 Difference]: Finished difference Result 478 states and 596 transitions. [2020-10-29 04:07:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:07:55,297 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-29 04:07:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:55,300 INFO L225 Difference]: With dead ends: 478 [2020-10-29 04:07:55,301 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 04:07:55,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:07:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 04:07:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 247. [2020-10-29 04:07:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-29 04:07:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 301 transitions. [2020-10-29 04:07:55,326 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 301 transitions. Word has length 85 [2020-10-29 04:07:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:55,326 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 301 transitions. [2020-10-29 04:07:55,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:07:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 301 transitions. [2020-10-29 04:07:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 04:07:55,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:55,328 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:55,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:07:55,328 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1243410905, now seen corresponding path program 10 times [2020-10-29 04:07:55,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:55,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601935980] [2020-10-29 04:07:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:55,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:57,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 04:08:00,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:08:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 04:08:00,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:00,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:08:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 04:08:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 04:08:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:00,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:00,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 04:08:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:00,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:00,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:00,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:00,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 4 proven. 203 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-29 04:08:00,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601935980] [2020-10-29 04:08:00,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:00,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:08:00,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723229970] [2020-10-29 04:08:00,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:08:00,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:00,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:08:00,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:08:00,622 INFO L87 Difference]: Start difference. First operand 247 states and 301 transitions. Second operand 15 states. [2020-10-29 04:08:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:01,098 INFO L93 Difference]: Finished difference Result 490 states and 610 transitions. [2020-10-29 04:08:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:08:01,099 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 92 [2020-10-29 04:08:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:01,105 INFO L225 Difference]: With dead ends: 490 [2020-10-29 04:08:01,105 INFO L226 Difference]: Without dead ends: 270 [2020-10-29 04:08:01,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:08:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-29 04:08:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2020-10-29 04:08:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 04:08:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 319 transitions. [2020-10-29 04:08:01,132 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 319 transitions. Word has length 92 [2020-10-29 04:08:01,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:01,132 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 319 transitions. [2020-10-29 04:08:01,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:08:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 319 transitions. [2020-10-29 04:08:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 04:08:01,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:01,134 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:01,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:08:01,134 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:01,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:01,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2057645538, now seen corresponding path program 11 times [2020-10-29 04:08:01,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:01,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582616605] [2020-10-29 04:08:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:01,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:01,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:02,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 04:08:06,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:08:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:08:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:06,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:08:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:08:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:06,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:06,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:06,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 04:08:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:06,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:06,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:06,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:06,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 04:08:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:06,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:06,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 4 proven. 240 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-29 04:08:06,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582616605] [2020-10-29 04:08:06,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:06,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:08:06,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144868634] [2020-10-29 04:08:06,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:08:06,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:06,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:08:06,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:08:06,405 INFO L87 Difference]: Start difference. First operand 261 states and 319 transitions. Second operand 16 states. [2020-10-29 04:08:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:06,897 INFO L93 Difference]: Finished difference Result 516 states and 644 transitions. [2020-10-29 04:08:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:08:06,901 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-29 04:08:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:06,903 INFO L225 Difference]: With dead ends: 516 [2020-10-29 04:08:06,904 INFO L226 Difference]: Without dead ends: 284 [2020-10-29 04:08:06,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:08:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-29 04:08:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 275. [2020-10-29 04:08:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-29 04:08:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 337 transitions. [2020-10-29 04:08:06,947 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 337 transitions. Word has length 97 [2020-10-29 04:08:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 337 transitions. [2020-10-29 04:08:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:08:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 337 transitions. [2020-10-29 04:08:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 04:08:06,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:06,951 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:06,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:08:06,951 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:06,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1069856693, now seen corresponding path program 12 times [2020-10-29 04:08:06,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:06,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018799982] [2020-10-29 04:08:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:11,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:08:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:12,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:12,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:08:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:12,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:12,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:12,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:12,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:12,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:08:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:12,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:12,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:12,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:12,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:12,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:12,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 4 proven. 280 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-10-29 04:08:12,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018799982] [2020-10-29 04:08:12,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:12,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:08:12,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435652254] [2020-10-29 04:08:12,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:08:12,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:12,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:08:12,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:08:12,228 INFO L87 Difference]: Start difference. First operand 275 states and 337 transitions. Second operand 17 states. [2020-10-29 04:08:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:12,782 INFO L93 Difference]: Finished difference Result 542 states and 678 transitions. [2020-10-29 04:08:12,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:08:12,782 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-10-29 04:08:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:12,788 INFO L225 Difference]: With dead ends: 542 [2020-10-29 04:08:12,788 INFO L226 Difference]: Without dead ends: 298 [2020-10-29 04:08:12,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-10-29 04:08:12,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-29 04:08:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 289. [2020-10-29 04:08:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-29 04:08:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 355 transitions. [2020-10-29 04:08:12,830 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 355 transitions. Word has length 102 [2020-10-29 04:08:12,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:12,830 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 355 transitions. [2020-10-29 04:08:12,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:08:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 355 transitions. [2020-10-29 04:08:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 04:08:12,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:12,832 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 13, 13, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:12,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:08:12,832 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:12,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:12,833 INFO L82 PathProgramCache]: Analyzing trace with hash -166890562, now seen corresponding path program 13 times [2020-10-29 04:08:12,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:12,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38027602] [2020-10-29 04:08:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:17,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 04:08:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:18,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:18,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:18,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:08:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:18,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:18,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:18,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:18,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:18,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 04:08:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:18,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:18,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:18,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:18,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 4 proven. 323 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-29 04:08:18,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38027602] [2020-10-29 04:08:18,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:18,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:08:18,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151065697] [2020-10-29 04:08:18,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:08:18,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:18,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:08:18,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:08:18,140 INFO L87 Difference]: Start difference. First operand 289 states and 355 transitions. Second operand 18 states. [2020-10-29 04:08:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:18,762 INFO L93 Difference]: Finished difference Result 568 states and 712 transitions. [2020-10-29 04:08:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:08:18,763 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 107 [2020-10-29 04:08:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:18,766 INFO L225 Difference]: With dead ends: 568 [2020-10-29 04:08:18,766 INFO L226 Difference]: Without dead ends: 312 [2020-10-29 04:08:18,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:08:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-29 04:08:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 303. [2020-10-29 04:08:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-29 04:08:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 373 transitions. [2020-10-29 04:08:18,802 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 373 transitions. Word has length 107 [2020-10-29 04:08:18,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:18,802 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 373 transitions. [2020-10-29 04:08:18,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:08:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 373 transitions. [2020-10-29 04:08:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 04:08:18,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:18,804 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 14, 14, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:18,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:08:18,804 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:18,805 INFO L82 PathProgramCache]: Analyzing trace with hash -639888785, now seen corresponding path program 14 times [2020-10-29 04:08:18,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:18,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746330906] [2020-10-29 04:08:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:08:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:24,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:24,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:24,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:24,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:24,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:24,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:24,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:24,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 04:08:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:24,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:24,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:24,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:24,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:24,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:24,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:24,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:08:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 4 proven. 369 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-29 04:08:24,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746330906] [2020-10-29 04:08:24,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:24,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:08:24,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518245915] [2020-10-29 04:08:24,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:08:24,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:08:24,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:08:24,199 INFO L87 Difference]: Start difference. First operand 303 states and 373 transitions. Second operand 19 states. [2020-10-29 04:08:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:24,866 INFO L93 Difference]: Finished difference Result 594 states and 746 transitions. [2020-10-29 04:08:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:08:24,867 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-10-29 04:08:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:24,869 INFO L225 Difference]: With dead ends: 594 [2020-10-29 04:08:24,870 INFO L226 Difference]: Without dead ends: 326 [2020-10-29 04:08:24,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:08:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-29 04:08:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 317. [2020-10-29 04:08:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-29 04:08:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 391 transitions. [2020-10-29 04:08:24,898 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 391 transitions. Word has length 112 [2020-10-29 04:08:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:24,899 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 391 transitions. [2020-10-29 04:08:24,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:08:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 391 transitions. [2020-10-29 04:08:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 04:08:24,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:24,901 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:24,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:08:24,901 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:24,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1091958374, now seen corresponding path program 15 times [2020-10-29 04:08:24,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:24,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439191556] [2020-10-29 04:08:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:08:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:30,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:30,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:30,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 04:08:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:30,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:30,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:30,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:30,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:30,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:30,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 04:08:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:30,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 4 proven. 418 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-29 04:08:30,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439191556] [2020-10-29 04:08:30,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:30,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:08:30,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862132803] [2020-10-29 04:08:30,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:08:30,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:30,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:08:30,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:08:30,359 INFO L87 Difference]: Start difference. First operand 317 states and 391 transitions. Second operand 20 states. [2020-10-29 04:08:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:31,056 INFO L93 Difference]: Finished difference Result 620 states and 780 transitions. [2020-10-29 04:08:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:08:31,056 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 117 [2020-10-29 04:08:31,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:31,058 INFO L225 Difference]: With dead ends: 620 [2020-10-29 04:08:31,058 INFO L226 Difference]: Without dead ends: 340 [2020-10-29 04:08:31,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:08:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-29 04:08:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 331. [2020-10-29 04:08:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-29 04:08:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 409 transitions. [2020-10-29 04:08:31,087 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 409 transitions. Word has length 117 [2020-10-29 04:08:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:31,087 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 409 transitions. [2020-10-29 04:08:31,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:08:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 409 transitions. [2020-10-29 04:08:31,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 04:08:31,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:31,089 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 16, 16, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:31,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 04:08:31,089 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:31,090 INFO L82 PathProgramCache]: Analyzing trace with hash 518761619, now seen corresponding path program 16 times [2020-10-29 04:08:31,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:31,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082917300] [2020-10-29 04:08:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 04:08:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 04:08:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:36,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:36,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:36,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:36,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 04:08:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-29 04:08:36,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082917300] [2020-10-29 04:08:36,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:36,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:08:36,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947196731] [2020-10-29 04:08:36,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:08:36,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:36,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:08:36,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:08:36,310 INFO L87 Difference]: Start difference. First operand 331 states and 409 transitions. Second operand 7 states. [2020-10-29 04:08:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:36,478 INFO L93 Difference]: Finished difference Result 361 states and 439 transitions. [2020-10-29 04:08:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:08:36,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 04:08:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:36,481 INFO L225 Difference]: With dead ends: 361 [2020-10-29 04:08:36,481 INFO L226 Difference]: Without dead ends: 207 [2020-10-29 04:08:36,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:08:36,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-29 04:08:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2020-10-29 04:08:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-29 04:08:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 246 transitions. [2020-10-29 04:08:36,501 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 246 transitions. Word has length 122 [2020-10-29 04:08:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:36,501 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 246 transitions. [2020-10-29 04:08:36,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:08:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 246 transitions. [2020-10-29 04:08:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 04:08:36,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:36,503 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:36,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 04:08:36,503 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:36,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:36,504 INFO L82 PathProgramCache]: Analyzing trace with hash -159579927, now seen corresponding path program 2 times [2020-10-29 04:08:36,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:36,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370845529] [2020-10-29 04:08:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:41,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 04:08:41,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 04:08:41,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:41,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:08:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 04:08:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 04:08:41,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:41,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:41,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:08:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:41,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:41,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 04:08:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:41,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:41,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:41,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:41,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 04:08:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-29 04:08:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:41,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:41,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:41,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:41,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 6 proven. 376 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 04:08:41,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370845529] [2020-10-29 04:08:41,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:41,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:08:41,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983555314] [2020-10-29 04:08:41,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:08:41,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:41,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:08:41,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:08:41,889 INFO L87 Difference]: Start difference. First operand 207 states and 246 transitions. Second operand 20 states. [2020-10-29 04:08:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:42,266 INFO L93 Difference]: Finished difference Result 952 states and 1213 transitions. [2020-10-29 04:08:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:08:42,266 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-29 04:08:42,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:42,270 INFO L225 Difference]: With dead ends: 952 [2020-10-29 04:08:42,271 INFO L226 Difference]: Without dead ends: 784 [2020-10-29 04:08:42,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:08:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-29 04:08:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 209. [2020-10-29 04:08:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-29 04:08:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 248 transitions. [2020-10-29 04:08:42,300 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 248 transitions. Word has length 128 [2020-10-29 04:08:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:42,301 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 248 transitions. [2020-10-29 04:08:42,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:08:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 248 transitions. [2020-10-29 04:08:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 04:08:42,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:42,302 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:42,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 04:08:42,302 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:42,303 INFO L82 PathProgramCache]: Analyzing trace with hash 599194832, now seen corresponding path program 3 times [2020-10-29 04:08:42,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:42,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239542863] [2020-10-29 04:08:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:47,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:47,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 04:08:47,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 04:08:47,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:47,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:08:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:08:47,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 04:08:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:47,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:47,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:47,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:47,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 04:08:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:47,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:47,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:47,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:47,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:47,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:47,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:47,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:47,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 04:08:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:47,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:47,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:47,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:47,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 04:08:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:47,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:47,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 6 proven. 425 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-29 04:08:47,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239542863] [2020-10-29 04:08:47,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:47,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:08:47,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849742392] [2020-10-29 04:08:47,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:08:47,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:47,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:08:47,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:08:47,734 INFO L87 Difference]: Start difference. First operand 209 states and 248 transitions. Second operand 21 states. [2020-10-29 04:08:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:48,151 INFO L93 Difference]: Finished difference Result 1040 states and 1329 transitions. [2020-10-29 04:08:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:08:48,152 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 133 [2020-10-29 04:08:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:48,157 INFO L225 Difference]: With dead ends: 1040 [2020-10-29 04:08:48,157 INFO L226 Difference]: Without dead ends: 872 [2020-10-29 04:08:48,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:08:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-10-29 04:08:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 211. [2020-10-29 04:08:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 04:08:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 250 transitions. [2020-10-29 04:08:48,188 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 250 transitions. Word has length 133 [2020-10-29 04:08:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:48,188 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 250 transitions. [2020-10-29 04:08:48,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:08:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 250 transitions. [2020-10-29 04:08:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 04:08:48,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:48,189 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:48,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 04:08:48,190 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2017397133, now seen corresponding path program 4 times [2020-10-29 04:08:48,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:48,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839927463] [2020-10-29 04:08:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:08:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 04:08:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:08:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:53,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:53,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:53,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:53,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 04:08:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:53,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:53,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:53,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:53,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:53,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:53,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 04:08:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-29 04:08:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:53,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:53,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:53,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:53,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:53,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 6 proven. 477 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-10-29 04:08:53,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839927463] [2020-10-29 04:08:53,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:53,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:08:53,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556684182] [2020-10-29 04:08:53,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:08:53,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:53,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:08:53,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:08:53,638 INFO L87 Difference]: Start difference. First operand 211 states and 250 transitions. Second operand 22 states. [2020-10-29 04:08:54,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:54,079 INFO L93 Difference]: Finished difference Result 1134 states and 1453 transitions. [2020-10-29 04:08:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:08:54,079 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 138 [2020-10-29 04:08:54,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:54,084 INFO L225 Difference]: With dead ends: 1134 [2020-10-29 04:08:54,084 INFO L226 Difference]: Without dead ends: 966 [2020-10-29 04:08:54,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:08:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-29 04:08:54,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 213. [2020-10-29 04:08:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-29 04:08:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2020-10-29 04:08:54,119 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 138 [2020-10-29 04:08:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:54,120 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2020-10-29 04:08:54,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:08:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2020-10-29 04:08:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 04:08:54,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:54,121 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:54,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 04:08:54,121 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash -608287596, now seen corresponding path program 17 times [2020-10-29 04:08:54,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:54,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378189082] [2020-10-29 04:08:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 04:08:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:08:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 04:08:59,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:08:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:08:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 04:08:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:59,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 04:08:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:59,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:59,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 04:08:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 04:08:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 935 backedges. 6 proven. 517 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2020-10-29 04:08:59,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378189082] [2020-10-29 04:08:59,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:59,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:08:59,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253969046] [2020-10-29 04:08:59,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:08:59,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:08:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:08:59,556 INFO L87 Difference]: Start difference. First operand 213 states and 252 transitions. Second operand 21 states. [2020-10-29 04:09:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:00,309 INFO L93 Difference]: Finished difference Result 329 states and 393 transitions. [2020-10-29 04:09:00,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:09:00,309 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 140 [2020-10-29 04:09:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:00,311 INFO L225 Difference]: With dead ends: 329 [2020-10-29 04:09:00,311 INFO L226 Difference]: Without dead ends: 267 [2020-10-29 04:09:00,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:09:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-29 04:09:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 219. [2020-10-29 04:09:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-29 04:09:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2020-10-29 04:09:00,344 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 140 [2020-10-29 04:09:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:00,344 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2020-10-29 04:09:00,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:09:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2020-10-29 04:09:00,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 04:09:00,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:00,345 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:00,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 04:09:00,346 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:00,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:00,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1294621652, now seen corresponding path program 5 times [2020-10-29 04:09:00,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:00,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606952804] [2020-10-29 04:09:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 04:09:05,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 04:09:05,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:09:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 04:09:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:09:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:05,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:05,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:05,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 04:09:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:05,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-29 04:09:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:05,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-29 04:09:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:05,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:05,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:05,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:05,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:05,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:05,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:05,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:05,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:05,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:05,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 6 proven. 532 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2020-10-29 04:09:05,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606952804] [2020-10-29 04:09:05,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:05,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:09:05,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770501343] [2020-10-29 04:09:05,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:09:05,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:09:05,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:09:05,857 INFO L87 Difference]: Start difference. First operand 219 states and 260 transitions. Second operand 23 states. [2020-10-29 04:09:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:06,451 INFO L93 Difference]: Finished difference Result 1246 states and 1601 transitions. [2020-10-29 04:09:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:09:06,452 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 143 [2020-10-29 04:09:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:06,458 INFO L225 Difference]: With dead ends: 1246 [2020-10-29 04:09:06,458 INFO L226 Difference]: Without dead ends: 1072 [2020-10-29 04:09:06,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:09:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-10-29 04:09:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 221. [2020-10-29 04:09:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-29 04:09:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 262 transitions. [2020-10-29 04:09:06,498 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 262 transitions. Word has length 143 [2020-10-29 04:09:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:06,499 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 262 transitions. [2020-10-29 04:09:06,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:09:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 262 transitions. [2020-10-29 04:09:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 04:09:06,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:06,500 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:06,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 04:09:06,500 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1436242547, now seen corresponding path program 18 times [2020-10-29 04:09:06,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:06,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555850017] [2020-10-29 04:09:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:06,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 04:09:11,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:12,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:12,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:12,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:12,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:09:12,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 04:09:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:12,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:12,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:12,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:12,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:09:12,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 04:09:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:12,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:12,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:09:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 04:09:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:12,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:12,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:12,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:09:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 6 proven. 575 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2020-10-29 04:09:12,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555850017] [2020-10-29 04:09:12,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:12,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:09:12,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525804820] [2020-10-29 04:09:12,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:09:12,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:12,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:09:12,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:09:12,121 INFO L87 Difference]: Start difference. First operand 221 states and 262 transitions. Second operand 22 states. [2020-10-29 04:09:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:12,911 INFO L93 Difference]: Finished difference Result 340 states and 407 transitions. [2020-10-29 04:09:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:09:12,912 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2020-10-29 04:09:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:12,915 INFO L225 Difference]: With dead ends: 340 [2020-10-29 04:09:12,915 INFO L226 Difference]: Without dead ends: 278 [2020-10-29 04:09:12,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:09:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-29 04:09:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 227. [2020-10-29 04:09:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-29 04:09:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 270 transitions. [2020-10-29 04:09:12,961 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 270 transitions. Word has length 145 [2020-10-29 04:09:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:12,962 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 270 transitions. [2020-10-29 04:09:12,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:09:12,962 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 270 transitions. [2020-10-29 04:09:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 04:09:12,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:12,969 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:12,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 04:09:12,969 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash -2091695567, now seen corresponding path program 6 times [2020-10-29 04:09:12,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:12,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934799775] [2020-10-29 04:09:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:18,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 04:09:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:18,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:18,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:18,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:18,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:09:18,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:18,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:18,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-29 04:09:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:18,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:18,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:18,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:18,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:18,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:18,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:18,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-29 04:09:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:18,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:18,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:18,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 04:09:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:18,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:18,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:18,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 6 proven. 590 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-29 04:09:18,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934799775] [2020-10-29 04:09:18,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:18,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 04:09:18,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801491175] [2020-10-29 04:09:18,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 04:09:18,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:18,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 04:09:18,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:09:18,484 INFO L87 Difference]: Start difference. First operand 227 states and 270 transitions. Second operand 24 states. [2020-10-29 04:09:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:19,145 INFO L93 Difference]: Finished difference Result 1364 states and 1757 transitions. [2020-10-29 04:09:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:09:19,147 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 148 [2020-10-29 04:09:19,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:19,151 INFO L225 Difference]: With dead ends: 1364 [2020-10-29 04:09:19,151 INFO L226 Difference]: Without dead ends: 1184 [2020-10-29 04:09:19,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:09:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2020-10-29 04:09:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 229. [2020-10-29 04:09:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-29 04:09:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 272 transitions. [2020-10-29 04:09:19,198 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 272 transitions. Word has length 148 [2020-10-29 04:09:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:19,198 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 272 transitions. [2020-10-29 04:09:19,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 04:09:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 272 transitions. [2020-10-29 04:09:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-29 04:09:19,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:19,200 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:19,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 04:09:19,200 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1817279432, now seen corresponding path program 19 times [2020-10-29 04:09:19,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:19,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026287078] [2020-10-29 04:09:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:09:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 04:09:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:24,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:24,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:24,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:24,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:24,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:24,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 04:09:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:24,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:24,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:24,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:24,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-29 04:09:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:24,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:24,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:24,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:24,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 04:09:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 6 proven. 636 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2020-10-29 04:09:24,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026287078] [2020-10-29 04:09:24,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:24,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:09:24,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020036669] [2020-10-29 04:09:24,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:09:24,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:24,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:09:24,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:09:24,741 INFO L87 Difference]: Start difference. First operand 229 states and 272 transitions. Second operand 23 states. [2020-10-29 04:09:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:25,595 INFO L93 Difference]: Finished difference Result 351 states and 421 transitions. [2020-10-29 04:09:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:09:25,595 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 150 [2020-10-29 04:09:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:25,597 INFO L225 Difference]: With dead ends: 351 [2020-10-29 04:09:25,597 INFO L226 Difference]: Without dead ends: 289 [2020-10-29 04:09:25,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 04:09:25,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-29 04:09:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 235. [2020-10-29 04:09:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-29 04:09:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 280 transitions. [2020-10-29 04:09:25,644 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 280 transitions. Word has length 150 [2020-10-29 04:09:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:25,644 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 280 transitions. [2020-10-29 04:09:25,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:09:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 280 transitions. [2020-10-29 04:09:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 04:09:25,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:25,646 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:25,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 04:09:25,646 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:25,646 INFO L82 PathProgramCache]: Analyzing trace with hash -477430904, now seen corresponding path program 7 times [2020-10-29 04:09:25,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:25,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686839085] [2020-10-29 04:09:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:30,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:09:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:31,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:31,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:31,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 04:09:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:31,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:31,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-29 04:09:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 04:09:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:31,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:31,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 6 proven. 651 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2020-10-29 04:09:31,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686839085] [2020-10-29 04:09:31,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:31,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:09:31,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507078537] [2020-10-29 04:09:31,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:09:31,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:31,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:09:31,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:09:31,226 INFO L87 Difference]: Start difference. First operand 235 states and 280 transitions. Second operand 25 states. [2020-10-29 04:09:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:31,912 INFO L93 Difference]: Finished difference Result 1488 states and 1921 transitions. [2020-10-29 04:09:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:09:31,912 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 153 [2020-10-29 04:09:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:31,918 INFO L225 Difference]: With dead ends: 1488 [2020-10-29 04:09:31,918 INFO L226 Difference]: Without dead ends: 1302 [2020-10-29 04:09:31,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:09:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2020-10-29 04:09:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 237. [2020-10-29 04:09:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-29 04:09:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 282 transitions. [2020-10-29 04:09:31,977 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 282 transitions. Word has length 153 [2020-10-29 04:09:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:31,977 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 282 transitions. [2020-10-29 04:09:31,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:09:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 282 transitions. [2020-10-29 04:09:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 04:09:31,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:31,979 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:31,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 04:09:31,979 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash -458448177, now seen corresponding path program 20 times [2020-10-29 04:09:31,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:31,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47544030] [2020-10-29 04:09:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:32,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:09:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 04:09:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 04:09:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:37,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 04:09:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 04:09:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:37,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:37,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 6 proven. 700 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2020-10-29 04:09:37,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47544030] [2020-10-29 04:09:37,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:37,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 04:09:37,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253313991] [2020-10-29 04:09:37,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 04:09:37,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:37,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 04:09:37,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:09:37,543 INFO L87 Difference]: Start difference. First operand 237 states and 282 transitions. Second operand 24 states. [2020-10-29 04:09:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:38,494 INFO L93 Difference]: Finished difference Result 362 states and 435 transitions. [2020-10-29 04:09:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:09:38,494 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 155 [2020-10-29 04:09:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:38,496 INFO L225 Difference]: With dead ends: 362 [2020-10-29 04:09:38,496 INFO L226 Difference]: Without dead ends: 300 [2020-10-29 04:09:38,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:09:38,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-29 04:09:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 243. [2020-10-29 04:09:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 04:09:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 290 transitions. [2020-10-29 04:09:38,546 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 290 transitions. Word has length 155 [2020-10-29 04:09:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:38,547 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 290 transitions. [2020-10-29 04:09:38,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 04:09:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 290 transitions. [2020-10-29 04:09:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 04:09:38,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:38,548 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:38,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 04:09:38,548 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:38,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:38,549 INFO L82 PathProgramCache]: Analyzing trace with hash 570944213, now seen corresponding path program 8 times [2020-10-29 04:09:38,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:38,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052539088] [2020-10-29 04:09:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:38,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 04:09:43,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-29 04:09:43,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:43,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:43,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:09:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 04:09:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:09:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:44,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:44,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:09:44,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:44,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:44,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-29 04:09:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:44,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:44,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:44,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:44,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:44,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:44,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:44,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 04:09:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 04:09:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 6 proven. 715 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2020-10-29 04:09:44,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052539088] [2020-10-29 04:09:44,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:44,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:09:44,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001004084] [2020-10-29 04:09:44,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:09:44,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:44,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:09:44,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:09:44,165 INFO L87 Difference]: Start difference. First operand 243 states and 290 transitions. Second operand 26 states. [2020-10-29 04:09:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:44,972 INFO L93 Difference]: Finished difference Result 1618 states and 2093 transitions. [2020-10-29 04:09:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:09:44,973 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 158 [2020-10-29 04:09:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:44,979 INFO L225 Difference]: With dead ends: 1618 [2020-10-29 04:09:44,979 INFO L226 Difference]: Without dead ends: 1426 [2020-10-29 04:09:44,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:09:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2020-10-29 04:09:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 245. [2020-10-29 04:09:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 04:09:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 292 transitions. [2020-10-29 04:09:45,053 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 292 transitions. Word has length 158 [2020-10-29 04:09:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:45,056 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 292 transitions. [2020-10-29 04:09:45,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 04:09:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 292 transitions. [2020-10-29 04:09:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 04:09:45,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:45,058 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:45,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 04:09:45,058 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:45,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1017852892, now seen corresponding path program 21 times [2020-10-29 04:09:45,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:45,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487739715] [2020-10-29 04:09:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:50,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:50,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 04:09:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:09:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 04:09:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:50,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:09:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:09:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 04:09:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 04:09:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:50,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-29 04:09:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:50,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:50,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-29 04:09:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:50,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1353 backedges. 6 proven. 767 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-10-29 04:09:50,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487739715] [2020-10-29 04:09:50,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:50,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:09:50,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072992534] [2020-10-29 04:09:50,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:09:50,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:50,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:09:50,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:09:50,619 INFO L87 Difference]: Start difference. First operand 245 states and 292 transitions. Second operand 25 states. [2020-10-29 04:09:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:51,667 INFO L93 Difference]: Finished difference Result 373 states and 449 transitions. [2020-10-29 04:09:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:09:51,668 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 160 [2020-10-29 04:09:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:51,669 INFO L225 Difference]: With dead ends: 373 [2020-10-29 04:09:51,670 INFO L226 Difference]: Without dead ends: 311 [2020-10-29 04:09:51,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:09:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-29 04:09:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 251. [2020-10-29 04:09:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-29 04:09:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 300 transitions. [2020-10-29 04:09:51,736 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 300 transitions. Word has length 160 [2020-10-29 04:09:51,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:51,737 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 300 transitions. [2020-10-29 04:09:51,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:09:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 300 transitions. [2020-10-29 04:09:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 04:09:51,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:51,738 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:51,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 04:09:51,739 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:51,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1496792348, now seen corresponding path program 9 times [2020-10-29 04:09:51,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:51,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124807846] [2020-10-29 04:09:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:56,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 04:09:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 04:09:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-29 04:09:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:57,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-29 04:09:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:57,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:57,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:57,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:57,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:57,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 6 proven. 782 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2020-10-29 04:09:57,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124807846] [2020-10-29 04:09:57,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:57,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 04:09:57,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048256276] [2020-10-29 04:09:57,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 04:09:57,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:57,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 04:09:57,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:09:57,402 INFO L87 Difference]: Start difference. First operand 251 states and 300 transitions. Second operand 27 states. [2020-10-29 04:09:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:58,409 INFO L93 Difference]: Finished difference Result 1754 states and 2273 transitions. [2020-10-29 04:09:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:09:58,410 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 163 [2020-10-29 04:09:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:58,416 INFO L225 Difference]: With dead ends: 1754 [2020-10-29 04:09:58,416 INFO L226 Difference]: Without dead ends: 1556 [2020-10-29 04:09:58,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:09:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2020-10-29 04:09:58,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 253. [2020-10-29 04:09:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-29 04:09:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 302 transitions. [2020-10-29 04:09:58,497 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 302 transitions. Word has length 163 [2020-10-29 04:09:58,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:58,498 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 302 transitions. [2020-10-29 04:09:58,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 04:09:58,498 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 302 transitions. [2020-10-29 04:09:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 04:09:58,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:58,499 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:58,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 04:09:58,499 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:58,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:58,500 INFO L82 PathProgramCache]: Analyzing trace with hash -853384405, now seen corresponding path program 22 times [2020-10-29 04:09:58,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:58,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665788068] [2020-10-29 04:09:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:58,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:03,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:03,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 04:10:03,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:10:03,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 04:10:03,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:03,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:10:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:10:03,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 04:10:03,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:04,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:04,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 04:10:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 04:10:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:04,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:04,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:04,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:04,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:04,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-29 04:10:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 6 proven. 837 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2020-10-29 04:10:04,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665788068] [2020-10-29 04:10:04,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:04,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:10:04,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109264070] [2020-10-29 04:10:04,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:10:04,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:10:04,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:10:04,146 INFO L87 Difference]: Start difference. First operand 253 states and 302 transitions. Second operand 26 states. [2020-10-29 04:10:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:05,236 INFO L93 Difference]: Finished difference Result 384 states and 463 transitions. [2020-10-29 04:10:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:10:05,237 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 165 [2020-10-29 04:10:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:05,238 INFO L225 Difference]: With dead ends: 384 [2020-10-29 04:10:05,239 INFO L226 Difference]: Without dead ends: 322 [2020-10-29 04:10:05,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 04:10:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-29 04:10:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 259. [2020-10-29 04:10:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-29 04:10:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 310 transitions. [2020-10-29 04:10:05,299 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 310 transitions. Word has length 165 [2020-10-29 04:10:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:05,299 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 310 transitions. [2020-10-29 04:10:05,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 04:10:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 310 transitions. [2020-10-29 04:10:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 04:10:05,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:05,300 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:05,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 04:10:05,301 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash -248822919, now seen corresponding path program 10 times [2020-10-29 04:10:05,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:05,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704437593] [2020-10-29 04:10:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:10,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 04:10:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 04:10:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-29 04:10:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:10,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:10,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:10,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:10,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-29 04:10:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:10,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:10,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-29 04:10:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:10,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:10,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:10,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:10,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 6 proven. 852 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2020-10-29 04:10:10,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704437593] [2020-10-29 04:10:10,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:10,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 04:10:10,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258519779] [2020-10-29 04:10:10,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 04:10:10,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 04:10:10,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:10:10,946 INFO L87 Difference]: Start difference. First operand 259 states and 310 transitions. Second operand 28 states. [2020-10-29 04:10:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:12,205 INFO L93 Difference]: Finished difference Result 1896 states and 2461 transitions. [2020-10-29 04:10:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:10:12,205 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 168 [2020-10-29 04:10:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:12,213 INFO L225 Difference]: With dead ends: 1896 [2020-10-29 04:10:12,213 INFO L226 Difference]: Without dead ends: 1692 [2020-10-29 04:10:12,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:10:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2020-10-29 04:10:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 261. [2020-10-29 04:10:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 04:10:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 312 transitions. [2020-10-29 04:10:12,309 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 312 transitions. Word has length 168 [2020-10-29 04:10:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:12,309 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 312 transitions. [2020-10-29 04:10:12,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 04:10:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 312 transitions. [2020-10-29 04:10:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 04:10:12,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:12,311 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:12,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 04:10:12,311 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:12,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2098031744, now seen corresponding path program 23 times [2020-10-29 04:10:12,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:12,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56965364] [2020-10-29 04:10:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:17,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:17,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 04:10:17,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:10:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:10:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:17,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:17,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 04:10:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:10:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 04:10:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:17,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:17,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:17,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:17,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:17,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:17,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:17,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 04:10:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:17,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 04:10:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:17,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:17,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 04:10:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1592 backedges. 6 proven. 910 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2020-10-29 04:10:17,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56965364] [2020-10-29 04:10:17,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:17,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 04:10:17,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622356895] [2020-10-29 04:10:17,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 04:10:17,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:17,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 04:10:17,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:10:17,933 INFO L87 Difference]: Start difference. First operand 261 states and 312 transitions. Second operand 27 states.