/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/loops/linear_search.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:59:42,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:59:42,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:59:42,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:59:42,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:59:42,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:59:42,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:59:42,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:59:42,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:59:42,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:59:42,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:59:42,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:59:42,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:59:42,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:59:42,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:59:42,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:59:42,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:59:42,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:59:42,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:59:42,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:59:42,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:59:42,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:59:42,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:59:42,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:59:42,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:59:42,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:59:42,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:59:42,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:59:42,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:59:42,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:59:42,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:59:42,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:59:42,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:59:42,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:59:42,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:59:42,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:59:42,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:59:42,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:59:42,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:59:42,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:59:42,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:59:42,111 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 09:59:42,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:59:42,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:59:42,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:59:42,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:59:42,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:59:42,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:59:42,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:59:42,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:59:42,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:59:42,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:59:42,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:59:42,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:59:42,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:59:42,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:59:42,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:59:42,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:59:42,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:59:42,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:59:42,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:59:42,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:59:42,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:59:42,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:59:42,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:59:42,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:59:42,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:59:42,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:59:42,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:59:42,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:59:42,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:59:42,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:59:42,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:59:42,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:59:42,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:59:42,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:59:42,599 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:59:42,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_search.c [2020-10-29 09:59:42,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35fc2566/31ff362ecd0349d3b84fe97f80d418e4/FLAGce766b83c [2020-10-29 09:59:43,402 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:59:43,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/linear_search.c [2020-10-29 09:59:43,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35fc2566/31ff362ecd0349d3b84fe97f80d418e4/FLAGce766b83c [2020-10-29 09:59:43,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c35fc2566/31ff362ecd0349d3b84fe97f80d418e4 [2020-10-29 09:59:43,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:59:43,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:59:43,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:59:43,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:59:43,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:59:43,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:59:43" (1/1) ... [2020-10-29 09:59:43,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9d3bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:43, skipping insertion in model container [2020-10-29 09:59:43,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:59:43" (1/1) ... [2020-10-29 09:59:43,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:59:43,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:59:43,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:59:44,001 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:59:44,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:59:44,038 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:59:44,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44 WrapperNode [2020-10-29 09:59:44,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:59:44,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:59:44,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:59:44,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:59:44,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (1/1) ... [2020-10-29 09:59:44,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (1/1) ... [2020-10-29 09:59:44,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (1/1) ... [2020-10-29 09:59:44,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (1/1) ... [2020-10-29 09:59:44,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (1/1) ... [2020-10-29 09:59:44,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (1/1) ... [2020-10-29 09:59:44,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (1/1) ... [2020-10-29 09:59:44,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:59:44,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:59:44,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:59:44,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:59:44,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (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 09:59:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:59:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:59:44,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:59:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:59:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2020-10-29 09:59:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:59:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:59:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:59:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:59:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:59:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:59:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:59:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 09:59:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2020-10-29 09:59:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:59:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:59:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:59:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:59:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:59:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:59:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:59:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:59:44,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:59:44,697 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:59:44,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:59:44 BoogieIcfgContainer [2020-10-29 09:59:44,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:59:44,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:59:44,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:59:44,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:59:44,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:59:43" (1/3) ... [2020-10-29 09:59:44,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b1941e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:59:44, skipping insertion in model container [2020-10-29 09:59:44,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:59:44" (2/3) ... [2020-10-29 09:59:44,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b1941e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:59:44, skipping insertion in model container [2020-10-29 09:59:44,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:59:44" (3/3) ... [2020-10-29 09:59:44,715 INFO L111 eAbstractionObserver]: Analyzing ICFG linear_search.c [2020-10-29 09:59:44,731 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:59:44,737 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:59:44,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:59:44,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:59:44,803 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:59:44,803 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:59:44,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:59:44,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:59:44,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:59:44,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:59:44,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:59:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-29 09:59:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:59:44,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:44,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:44,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash 95069252, now seen corresponding path program 1 times [2020-10-29 09:59:44,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:44,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258078027] [2020-10-29 09:59:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:45,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:45,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:45,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 09:59:45,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-29 09:59:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:45,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:59:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:59:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:59:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:59:46,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:46,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:59:46,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:46,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:46,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:59:46,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:59:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:59:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:59:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:46,184 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 09:59:46,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258078027] [2020-10-29 09:59:46,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:59:46,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:59:46,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274978579] [2020-10-29 09:59:46,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:59:46,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:59:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:59:46,211 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 6 states. [2020-10-29 09:59:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:46,543 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-29 09:59:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:59:46,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-29 09:59:46,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:46,555 INFO L225 Difference]: With dead ends: 60 [2020-10-29 09:59:46,556 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:59:46,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:59:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:59:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-29 09:59:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 09:59:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-29 09:59:46,636 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2020-10-29 09:59:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:46,637 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-29 09:59:46,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:59:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-29 09:59:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 09:59:46,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:46,639 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] [2020-10-29 09:59:46,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:59:46,639 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:46,640 INFO L82 PathProgramCache]: Analyzing trace with hash -145134448, now seen corresponding path program 1 times [2020-10-29 09:59:46,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:46,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918188512] [2020-10-29 09:59:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:46,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:46,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 09:59:46,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:46,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 09:59:46,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:46,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:46,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:59:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 09:59:46,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:59:46,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:47,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:47,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:47,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:59:47,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:47,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:47,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:59:47,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 09:59:47,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:47,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:47,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:59:47,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:47,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:59:47,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:47,111 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 09:59:47,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918188512] [2020-10-29 09:59:47,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:59:47,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:59:47,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802613298] [2020-10-29 09:59:47,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:59:47,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:47,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:59:47,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:59:47,118 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 7 states. [2020-10-29 09:59:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:47,351 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-29 09:59:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:59:47,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-29 09:59:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:47,353 INFO L225 Difference]: With dead ends: 36 [2020-10-29 09:59:47,353 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 09:59:47,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:59:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 09:59:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 09:59:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 09:59:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-29 09:59:47,363 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-10-29 09:59:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:47,363 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-29 09:59:47,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:59:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-29 09:59:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:59:47,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:47,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:47,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:59:47,365 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:47,366 INFO L82 PathProgramCache]: Analyzing trace with hash -719289417, now seen corresponding path program 1 times [2020-10-29 09:59:47,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:47,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027320864] [2020-10-29 09:59:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:48,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:59:48,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:48,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-29 09:59:48,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:48,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:59:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:59:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:59:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:48,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:59:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:48,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:48,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:59:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 09:59:48,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:48,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:59:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:59:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:59:48,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027320864] [2020-10-29 09:59:48,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:48,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:59:48,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474365129] [2020-10-29 09:59:48,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:59:48,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:48,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:59:48,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:59:48,700 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2020-10-29 09:59:49,140 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-29 09:59:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:49,206 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-10-29 09:59:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:59:49,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-29 09:59:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:49,210 INFO L225 Difference]: With dead ends: 38 [2020-10-29 09:59:49,211 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 09:59:49,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:59:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 09:59:49,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-29 09:59:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 09:59:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-29 09:59:49,226 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 25 [2020-10-29 09:59:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:49,227 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-29 09:59:49,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:59:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-29 09:59:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:59:49,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:49,229 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] [2020-10-29 09:59:49,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:59:49,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:49,230 INFO L82 PathProgramCache]: Analyzing trace with hash -18224839, now seen corresponding path program 1 times [2020-10-29 09:59:49,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:49,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889565104] [2020-10-29 09:59:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:49,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:59:49,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 09:59:49,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:49,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:59:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:59:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:59:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:49,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:49,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:59:49,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:49,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:49,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:49,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:59:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 09:59:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:49,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:59:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:59:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:59:49,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889565104] [2020-10-29 09:59:49,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:59:49,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:59:49,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784546547] [2020-10-29 09:59:49,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:59:49,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:49,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:59:49,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:59:49,630 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-10-29 09:59:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:49,861 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-29 09:59:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:59:49,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-29 09:59:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:49,862 INFO L225 Difference]: With dead ends: 50 [2020-10-29 09:59:49,862 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 09:59:49,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:59:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 09:59:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-10-29 09:59:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 09:59:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-29 09:59:49,871 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2020-10-29 09:59:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:49,871 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-29 09:59:49,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:59:49,871 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-29 09:59:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:59:49,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:49,872 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] [2020-10-29 09:59:49,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:59:49,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:49,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:49,873 INFO L82 PathProgramCache]: Analyzing trace with hash -605030853, now seen corresponding path program 1 times [2020-10-29 09:59:49,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:49,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138033659] [2020-10-29 09:59:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:50,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:59:50,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-29 09:59:50,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:50,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:59:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:59:50,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:59:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:50,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:50,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:50,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:50,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:59:50,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:50,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:50,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:50,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 09:59:50,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 09:59:50,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:50,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:59:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:59:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:59:50,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138033659] [2020-10-29 09:59:50,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:50,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:59:50,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280805144] [2020-10-29 09:59:50,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:59:50,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:50,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:59:50,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:59:50,943 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2020-10-29 09:59:51,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:51,291 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-10-29 09:59:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:59:51,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-29 09:59:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:51,293 INFO L225 Difference]: With dead ends: 42 [2020-10-29 09:59:51,293 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 09:59:51,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:59:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 09:59:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-29 09:59:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 09:59:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-29 09:59:51,301 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-10-29 09:59:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:51,302 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-29 09:59:51,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:59:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-29 09:59:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:59:51,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:51,303 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:51,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:59:51,304 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:51,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:51,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1706833311, now seen corresponding path program 1 times [2020-10-29 09:59:51,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:51,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099279479] [2020-10-29 09:59:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:51,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:59:51,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 09:59:51,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:51,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:59:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:59:51,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:59:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:51,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:51,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:59:51,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:51,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:51,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:51,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:59:51,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 09:59:51,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:51,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:59:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:59:51,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:59:51,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099279479] [2020-10-29 09:59:51,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:51,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:59:51,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773482945] [2020-10-29 09:59:51,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:59:51,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:51,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:59:51,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:59:51,739 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-29 09:59:51,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:51,987 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-10-29 09:59:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:59:51,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-29 09:59:51,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:51,989 INFO L225 Difference]: With dead ends: 54 [2020-10-29 09:59:51,989 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 09:59:51,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:59:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 09:59:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-29 09:59:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 09:59:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-29 09:59:51,997 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 29 [2020-10-29 09:59:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:51,998 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-29 09:59:51,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:59:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-29 09:59:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:59:51,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:51,999 INFO L422 BasicCegarLoop]: trace histogram [3, 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 09:59:51,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:59:52,000 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:52,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:52,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2001327971, now seen corresponding path program 2 times [2020-10-29 09:59:52,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:52,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371028885] [2020-10-29 09:59:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:53,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:53,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 09:59:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-10-29 09:59:53,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:53,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:59:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:59:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:59:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:53,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:53,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:53,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:53,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:59:53,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:53,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:54,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:54,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:59:54,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-10-29 09:59:54,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:54,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:59:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:59:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:55,023 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-29 09:59:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:59:55,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371028885] [2020-10-29 09:59:55,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:55,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:59:55,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242551505] [2020-10-29 09:59:55,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:59:55,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:55,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:59:55,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:59:55,109 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 9 states. [2020-10-29 09:59:55,605 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 09:59:55,790 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 09:59:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:55,903 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-29 09:59:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:59:55,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-29 09:59:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:55,908 INFO L225 Difference]: With dead ends: 46 [2020-10-29 09:59:55,909 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 09:59:55,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:59:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 09:59:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-29 09:59:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 09:59:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-10-29 09:59:55,919 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 29 [2020-10-29 09:59:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:55,919 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-10-29 09:59:55,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:59:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-10-29 09:59:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:59:55,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:55,920 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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 09:59:55,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:59:55,921 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:55,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1173936009, now seen corresponding path program 2 times [2020-10-29 09:59:55,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:55,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231151767] [2020-10-29 09:59:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:56,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:59:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-29 09:59:56,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:56,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:59:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:59:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:59:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:59:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:56,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:56,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:59:56,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:56,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:56,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:56,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:59:56,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 09:59:56,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:56,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:59:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:59:56,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:59:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:59:56,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231151767] [2020-10-29 09:59:56,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:56,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:59:56,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781828573] [2020-10-29 09:59:56,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:59:56,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:59:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:59:56,599 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2020-10-29 09:59:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:56,931 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-10-29 09:59:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:59:56,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-29 09:59:56,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:56,935 INFO L225 Difference]: With dead ends: 58 [2020-10-29 09:59:56,935 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 09:59:56,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:59:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 09:59:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-29 09:59:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 09:59:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-29 09:59:56,955 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 33 [2020-10-29 09:59:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:56,955 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-29 09:59:56,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:59:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-29 09:59:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:59:56,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:56,957 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:56,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:59:56,960 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:56,961 INFO L82 PathProgramCache]: Analyzing trace with hash 587129995, now seen corresponding path program 3 times [2020-10-29 09:59:56,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:56,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417853090] [2020-10-29 09:59:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:58,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:59:58,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-10-29 09:59:58,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:58,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:59:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:59:58,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:59:58,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:59,075 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 27 [2020-10-29 09:59:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:59,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:59,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:59:59,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:59,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:59:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:59:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:59,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 09:59:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:59,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:59,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:59:59,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:59:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-29 09:59:59,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:59,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:59:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:59:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:59:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:00,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417853090] [2020-10-29 10:00:00,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:00,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:00:00,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850079985] [2020-10-29 10:00:00,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:00:00,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:00,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:00:00,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:00:00,180 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 10 states. [2020-10-29 10:00:00,574 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-29 10:00:00,898 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-29 10:00:00,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:00,987 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-10-29 10:00:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:00:00,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-29 10:00:00,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:00,991 INFO L225 Difference]: With dead ends: 50 [2020-10-29 10:00:00,991 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 10:00:00,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:00:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 10:00:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-29 10:00:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 10:00:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-29 10:00:01,001 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-10-29 10:00:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:01,001 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-29 10:00:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:00:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-29 10:00:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 10:00:01,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:01,003 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:01,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 10:00:01,003 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:01,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:01,004 INFO L82 PathProgramCache]: Analyzing trace with hash -929886031, now seen corresponding path program 3 times [2020-10-29 10:00:01,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:01,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190188206] [2020-10-29 10:00:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:01,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 10:00:01,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:01,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 10:00:01,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:01,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:00:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 10:00:01,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 10:00:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:01,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:01,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:00:01,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:01,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:01,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:00:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 10:00:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:01,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:00:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 10:00:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:01,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190188206] [2020-10-29 10:00:01,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:01,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 10:00:01,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535842673] [2020-10-29 10:00:01,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:00:01,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:01,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:00:01,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:00:01,654 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 8 states. [2020-10-29 10:00:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:02,038 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-10-29 10:00:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:00:02,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-29 10:00:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:02,040 INFO L225 Difference]: With dead ends: 62 [2020-10-29 10:00:02,040 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 10:00:02,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:00:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 10:00:02,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-29 10:00:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 10:00:02,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-29 10:00:02,050 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 37 [2020-10-29 10:00:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:02,050 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-29 10:00:02,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:00:02,050 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-29 10:00:02,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 10:00:02,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:02,051 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:02,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 10:00:02,051 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:02,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1516692045, now seen corresponding path program 4 times [2020-10-29 10:00:02,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:02,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325109600] [2020-10-29 10:00:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:07,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 10:00:07,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 10:00:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 10:00:07,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:07,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:00:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 10:00:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 10:00:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:07,291 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 27 [2020-10-29 10:00:07,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:07,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:07,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:07,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:00:07,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:07,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:08,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:10,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:10,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:00:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 10:00:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3364 [2020-10-29 10:00:10,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:10,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:00:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 10:00:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:11,055 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 33 [2020-10-29 10:00:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:11,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325109600] [2020-10-29 10:00:11,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:11,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 10:00:11,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801185876] [2020-10-29 10:00:11,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:00:11,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:00:11,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:00:11,586 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 12 states. [2020-10-29 10:00:12,275 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-29 10:00:12,558 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 10:00:12,801 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 10:00:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:12,924 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-29 10:00:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:00:12,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-29 10:00:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:12,926 INFO L225 Difference]: With dead ends: 54 [2020-10-29 10:00:12,926 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 10:00:12,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-10-29 10:00:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 10:00:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-29 10:00:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 10:00:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-29 10:00:12,942 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 37 [2020-10-29 10:00:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:12,943 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-29 10:00:12,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:00:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-29 10:00:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 10:00:12,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:12,944 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:12,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 10:00:12,944 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:12,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1818462759, now seen corresponding path program 4 times [2020-10-29 10:00:12,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:12,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127073980] [2020-10-29 10:00:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:12,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:13,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:13,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 10:00:13,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-29 10:00:13,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:13,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:00:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 10:00:13,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 10:00:13,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:13,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:13,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:13,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:13,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:13,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:13,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:13,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 10:00:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 10:00:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:13,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:00:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 10:00:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 15 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:13,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127073980] [2020-10-29 10:00:13,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:13,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 10:00:13,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801253837] [2020-10-29 10:00:13,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:00:13,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:13,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:00:13,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:00:13,706 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 9 states. [2020-10-29 10:00:14,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:14,205 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-29 10:00:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:00:14,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-29 10:00:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:14,207 INFO L225 Difference]: With dead ends: 66 [2020-10-29 10:00:14,207 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 10:00:14,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:00:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 10:00:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2020-10-29 10:00:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 10:00:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-29 10:00:14,229 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 41 [2020-10-29 10:00:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:14,229 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-29 10:00:14,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:00:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-29 10:00:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 10:00:14,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:14,230 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:14,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 10:00:14,230 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:14,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:14,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1889698523, now seen corresponding path program 5 times [2020-10-29 10:00:14,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:14,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096130559] [2020-10-29 10:00:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:14,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:14,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:19,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:19,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 10:00:19,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 10:00:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 10:00:19,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:19,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:19,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:00:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 10:00:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:00:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 10:00:19,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:19,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:19,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:19,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:19,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:19,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:19,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:24,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:24,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 10:00:24,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 10:00:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 10:00:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:24,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:00:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:00:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:24,800 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-10-29 10:00:25,028 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 30 [2020-10-29 10:00:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:25,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096130559] [2020-10-29 10:00:25,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:25,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 10:00:25,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135734420] [2020-10-29 10:00:25,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:00:25,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:25,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:00:25,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:00:25,408 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 13 states. [2020-10-29 10:00:26,015 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-29 10:00:26,597 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 10:00:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:26,710 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2020-10-29 10:00:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 10:00:26,710 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-29 10:00:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:26,711 INFO L225 Difference]: With dead ends: 58 [2020-10-29 10:00:26,711 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 10:00:26,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-10-29 10:00:26,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 10:00:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-29 10:00:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 10:00:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-29 10:00:26,728 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 41 [2020-10-29 10:00:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:26,728 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-29 10:00:26,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:00:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-29 10:00:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 10:00:26,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:26,729 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:26,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 10:00:26,730 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1134495489, now seen corresponding path program 5 times [2020-10-29 10:00:26,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:26,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753535134] [2020-10-29 10:00:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:26,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:00:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-29 10:00:27,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:27,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:00:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 10:00:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 10:00:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:27,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:27,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:27,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:27,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:27,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:27,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:27,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:27,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 10:00:27,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:27,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 10:00:27,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:27,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:00:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:27,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 10:00:27,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:27,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753535134] [2020-10-29 10:00:27,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:27,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:00:27,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981849883] [2020-10-29 10:00:27,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:00:27,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:27,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:00:27,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:00:27,586 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 10 states. [2020-10-29 10:00:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:28,271 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2020-10-29 10:00:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:00:28,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-29 10:00:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:28,273 INFO L225 Difference]: With dead ends: 70 [2020-10-29 10:00:28,273 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 10:00:28,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:00:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 10:00:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-10-29 10:00:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 10:00:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-29 10:00:28,284 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 45 [2020-10-29 10:00:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:28,285 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-29 10:00:28,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:00:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-29 10:00:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 10:00:28,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:28,285 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:28,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 10:00:28,286 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:28,286 INFO L82 PathProgramCache]: Analyzing trace with hash 547689475, now seen corresponding path program 6 times [2020-10-29 10:00:28,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:28,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573641683] [2020-10-29 10:00:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:28,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:30,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:31,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:31,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:33,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 10:00:33,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 10:00:33,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 10:00:33,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:33,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 10:00:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 10:00:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:00:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:33,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:33,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:33,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:33,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:33,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:33,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:33,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:36,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:38,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:38,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:00:38,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:39,030 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-10-29 10:00:39,206 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 38 [2020-10-29 10:00:39,445 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 50 [2020-10-29 10:00:39,656 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2020-10-29 10:00:39,868 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2020-10-29 10:00:40,195 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2020-10-29 10:00:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:40,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573641683] [2020-10-29 10:00:40,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:40,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 10:00:40,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696052955] [2020-10-29 10:00:40,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 10:00:40,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:40,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 10:00:40,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:00:40,341 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 15 states. [2020-10-29 10:00:41,371 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-10-29 10:00:41,950 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 10:00:42,277 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 10:00:42,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:42,432 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-10-29 10:00:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 10:00:42,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-10-29 10:00:42,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:42,433 INFO L225 Difference]: With dead ends: 62 [2020-10-29 10:00:42,433 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 10:00:42,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-10-29 10:00:42,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 10:00:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-29 10:00:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 10:00:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-29 10:00:42,445 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 45 [2020-10-29 10:00:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:42,445 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-29 10:00:42,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 10:00:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-29 10:00:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 10:00:42,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:42,447 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:42,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 10:00:42,447 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:42,447 INFO L82 PathProgramCache]: Analyzing trace with hash 539280425, now seen corresponding path program 6 times [2020-10-29 10:00:42,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:42,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093713625] [2020-10-29 10:00:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:42,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:00:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:42,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:42,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:42,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:42,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:42,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:42,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:42,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:42,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 10:00:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:43,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093713625] [2020-10-29 10:00:43,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:43,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 10:00:43,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369417031] [2020-10-29 10:00:43,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:00:43,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:43,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:00:43,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:00:43,355 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 11 states. [2020-10-29 10:00:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:44,164 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-29 10:00:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:00:44,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-29 10:00:44,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:44,167 INFO L225 Difference]: With dead ends: 74 [2020-10-29 10:00:44,167 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 10:00:44,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:00:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 10:00:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-10-29 10:00:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 10:00:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-29 10:00:44,179 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 49 [2020-10-29 10:00:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:44,179 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-29 10:00:44,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:00:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-29 10:00:44,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 10:00:44,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:44,180 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:44,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 10:00:44,180 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:44,181 INFO L82 PathProgramCache]: Analyzing trace with hash -47525589, now seen corresponding path program 7 times [2020-10-29 10:00:44,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:44,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129024706] [2020-10-29 10:00:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:44,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:46,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 10:00:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 10:00:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 10:00:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:00:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 10:00:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 10:00:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:49,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:49,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:00:49,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:49,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:50,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:50,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:51,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:54,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 10:00:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:55,490 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-10-29 10:00:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:55,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129024706] [2020-10-29 10:00:55,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:55,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 10:00:55,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711433001] [2020-10-29 10:00:55,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 10:00:55,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:55,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 10:00:55,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-29 10:00:55,535 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 16 states. [2020-10-29 10:00:56,415 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-29 10:00:56,985 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-29 10:00:57,172 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-29 10:00:57,582 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-29 10:00:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:57,713 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-29 10:00:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 10:00:57,713 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-29 10:00:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:57,714 INFO L225 Difference]: With dead ends: 67 [2020-10-29 10:00:57,714 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 10:00:57,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-10-29 10:00:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 10:00:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-29 10:00:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 10:00:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-29 10:00:57,729 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 49 [2020-10-29 10:00:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:57,730 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-29 10:00:57,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 10:00:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-29 10:00:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:00:57,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:57,731 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:57,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 10:00:57,731 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:57,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1682461359, now seen corresponding path program 7 times [2020-10-29 10:00:57,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:57,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362619159] [2020-10-29 10:00:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:58,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:58,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 10:00:58,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-29 10:00:58,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:58,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:00:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 10:00:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:00:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:58,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:58,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:00:58,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:58,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:00:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:58,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:58,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:58,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 10:00:58,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-29 10:00:58,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:58,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:00:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:00:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:00:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 24 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:58,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362619159] [2020-10-29 10:00:58,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:58,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 10:00:58,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135628169] [2020-10-29 10:00:58,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:00:58,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:58,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:00:58,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:00:58,638 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 12 states. [2020-10-29 10:00:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:59,583 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-10-29 10:00:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:00:59,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-29 10:00:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:59,584 INFO L225 Difference]: With dead ends: 78 [2020-10-29 10:00:59,584 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 10:00:59,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-29 10:00:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 10:00:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-10-29 10:00:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 10:00:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-29 10:00:59,596 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 53 [2020-10-29 10:00:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:59,596 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-29 10:00:59,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:00:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-29 10:00:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 10:00:59,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:59,597 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:59,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 10:00:59,597 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:59,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2025699923, now seen corresponding path program 8 times [2020-10-29 10:00:59,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:59,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622480074] [2020-10-29 10:00:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:04,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:04,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 10:01:04,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 10:01:04,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 10:01:04,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:04,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:04,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 10:01:04,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 10:01:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 10:01:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:04,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:04,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 10:01:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:09,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 10:01:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 10:01:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 10:01:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:09,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 10:01:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 10:01:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 10:01:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0