/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=SHALLOWEST --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/eca-rers2012/Problem16_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:54:35,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:54:35,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:54:35,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:54:35,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:54:35,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:54:35,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:54:35,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:54:35,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:54:35,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:54:35,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:54:35,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:54:35,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:54:35,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:54:35,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:54:35,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:54:35,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:54:35,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:54:35,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:54:35,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:54:35,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:54:35,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:54:35,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:54:35,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:54:35,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:54:35,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:54:35,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:54:35,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:54:35,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:54:35,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:54:35,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:54:35,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:54:35,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:54:35,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:54:35,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:54:35,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:54:35,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:54:35,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:54:35,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:54:35,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:54:35,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:54:35,225 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 [2020-10-26 23:54:35,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:54:35,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:54:35,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:54:35,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:54:35,276 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:54:35,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:54:35,277 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:54:35,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:54:35,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:54:35,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:54:35,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:54:35,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:54:35,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:54:35,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:54:35,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:54:35,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:54:35,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:54:35,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:54:35,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:54:35,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:54:35,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:54:35,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:54:35,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:54:35,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:54:35,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:54:35,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:54:35,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:54:35,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:54:35,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:54:35,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:54:35,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:54:35,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:54:35,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:54:35,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:54:35,760 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:54:35,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18.c [2020-10-26 23:54:35,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/310cfcbf5/8db27cc40d5c4c8286b2ff0932821180/FLAG29ffe555c [2020-10-26 23:54:36,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:54:36,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label18.c [2020-10-26 23:54:36,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/310cfcbf5/8db27cc40d5c4c8286b2ff0932821180/FLAG29ffe555c [2020-10-26 23:54:36,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/310cfcbf5/8db27cc40d5c4c8286b2ff0932821180 [2020-10-26 23:54:36,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:54:36,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:54:36,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:54:36,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:54:36,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:54:36,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:36" (1/1) ... [2020-10-26 23:54:36,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a1cb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:36, skipping insertion in model container [2020-10-26 23:54:36,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:54:36" (1/1) ... [2020-10-26 23:54:36,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:54:36,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:54:37,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:54:37,824 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:54:38,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:54:38,263 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:54:38,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38 WrapperNode [2020-10-26 23:54:38,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:54:38,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:54:38,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:54:38,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:54:38,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... [2020-10-26 23:54:38,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... [2020-10-26 23:54:38,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... [2020-10-26 23:54:38,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... [2020-10-26 23:54:38,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... [2020-10-26 23:54:38,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... [2020-10-26 23:54:38,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... [2020-10-26 23:54:38,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:54:38,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:54:38,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:54:38,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:54:38,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:54:38,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:54:38,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:54:38,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:54:38,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:54:38,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:54:38,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:54:38,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:54:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:54:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:54:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:54:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:54:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:54:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:54:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:54:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:54:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:54:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:54:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:54:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:54:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:54:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:54:40,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:54:40,955 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:54:40,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:40 BoogieIcfgContainer [2020-10-26 23:54:40,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:54:40,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:54:40,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:54:40,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:54:40,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:54:36" (1/3) ... [2020-10-26 23:54:40,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@835608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:40, skipping insertion in model container [2020-10-26 23:54:40,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:54:38" (2/3) ... [2020-10-26 23:54:40,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@835608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:54:40, skipping insertion in model container [2020-10-26 23:54:40,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:54:40" (3/3) ... [2020-10-26 23:54:40,975 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label18.c [2020-10-26 23:54:40,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:54:40,997 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:54:41,013 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:54:41,067 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:54:41,067 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:54:41,068 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:54:41,068 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:54:41,068 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:54:41,068 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:54:41,068 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:54:41,069 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:54:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:54:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 23:54:41,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:41,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:41,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:41,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1046264140, now seen corresponding path program 1 times [2020-10-26 23:54:41,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:41,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187876732] [2020-10-26 23:54:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:41,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:41,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-26 23:54:41,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:41,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-26 23:54:41,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 23:54:41,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:54:41,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:42,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:42,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:42,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:42,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:42,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:54:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:54:42,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187876732] [2020-10-26 23:54:42,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:54:42,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:54:42,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59531145] [2020-10-26 23:54:42,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:54:42,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:54:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:54:42,102 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:54:46,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:46,944 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-26 23:54:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:54:46,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-26 23:54:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:46,967 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:54:46,967 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:54:46,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:54:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:54:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-26 23:54:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-26 23:54:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-26 23:54:47,101 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 14 [2020-10-26 23:54:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:47,102 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-26 23:54:47,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:54:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-26 23:54:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-26 23:54:47,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:47,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:47,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:54:47,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:47,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1057655916, now seen corresponding path program 1 times [2020-10-26 23:54:47,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:47,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353506904] [2020-10-26 23:54:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:54:48,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-26 23:54:48,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:54:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:48,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:54:48,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:54:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:48,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:54:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:48,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:48,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:54:48,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:54:48,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:54:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:54:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:54:48,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353506904] [2020-10-26 23:54:48,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:54:48,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:54:48,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068743945] [2020-10-26 23:54:48,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:48,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:48,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:48,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:48,911 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-26 23:54:54,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:54,383 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-26 23:54:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:54:54,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-26 23:54:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:54,400 INFO L225 Difference]: With dead ends: 2090 [2020-10-26 23:54:54,400 INFO L226 Difference]: Without dead ends: 1403 [2020-10-26 23:54:54,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:54:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-26 23:54:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-26 23:54:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-26 23:54:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-26 23:54:54,458 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 90 [2020-10-26 23:54:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:54,459 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-26 23:54:54,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-26 23:54:54,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-26 23:54:54,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:54,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:54,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:54:54,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:54,466 INFO L82 PathProgramCache]: Analyzing trace with hash 558036538, now seen corresponding path program 1 times [2020-10-26 23:54:54,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:54,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558352179] [2020-10-26 23:54:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:55,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:57,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:57,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-26 23:54:57,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:54:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3023 [2020-10-26 23:54:57,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:54:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:54:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:54:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:57,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:57,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:57,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:57,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:54:57,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:54:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:57,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:57,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:57,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:57,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:54:57,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-26 23:54:57,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:54:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:58,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:54:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:58,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:58,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:54:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:54:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-26 23:54:58,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:54:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:54:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:54:59,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558352179] [2020-10-26 23:54:59,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:59,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:54:59,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183420923] [2020-10-26 23:54:59,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:54:59,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:54:59,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:54:59,256 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 12 states. [2020-10-26 23:54:59,511 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-26 23:55:00,067 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-26 23:55:00,371 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-26 23:55:01,029 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-26 23:55:02,272 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-26 23:55:04,303 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-26 23:55:04,643 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-26 23:55:04,983 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-26 23:55:05,228 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-26 23:55:05,936 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-26 23:55:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:11,626 INFO L93 Difference]: Finished difference Result 3985 states and 5510 transitions. [2020-10-26 23:55:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 23:55:11,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 177 [2020-10-26 23:55:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:11,645 INFO L225 Difference]: With dead ends: 3985 [2020-10-26 23:55:11,646 INFO L226 Difference]: Without dead ends: 2612 [2020-10-26 23:55:11,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2020-10-26 23:55:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2020-10-26 23:55:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2436. [2020-10-26 23:55:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2436 states. [2020-10-26 23:55:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3226 transitions. [2020-10-26 23:55:11,749 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3226 transitions. Word has length 177 [2020-10-26 23:55:11,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:11,750 INFO L481 AbstractCegarLoop]: Abstraction has 2436 states and 3226 transitions. [2020-10-26 23:55:11,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:55:11,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3226 transitions. [2020-10-26 23:55:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-26 23:55:11,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:11,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:11,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:55:11,759 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:11,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1081997490, now seen corresponding path program 1 times [2020-10-26 23:55:11,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:11,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874590429] [2020-10-26 23:55:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:14,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:14,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:16,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:16,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-26 23:55:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:55:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:55:16,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:55:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 323 [2020-10-26 23:55:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-10-26 23:55:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:16,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:17,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:55:17,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:17,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:17,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:17,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:17,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:55:17,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:55:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:17,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:55:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:17,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:55:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-26 23:55:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:55:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:17,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:55:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:17,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:17,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 23:55:17,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:55:17,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:17,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:17,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:17,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 23:55:17,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-26 23:55:18,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874590429] [2020-10-26 23:55:18,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:18,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:18,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478784911] [2020-10-26 23:55:18,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:55:18,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:18,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:55:18,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:55:18,448 INFO L87 Difference]: Start difference. First operand 2436 states and 3226 transitions. Second operand 8 states. [2020-10-26 23:55:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:23,605 INFO L93 Difference]: Finished difference Result 5595 states and 7781 transitions. [2020-10-26 23:55:23,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:55:23,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 327 [2020-10-26 23:55:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:23,634 INFO L225 Difference]: With dead ends: 5595 [2020-10-26 23:55:23,634 INFO L226 Difference]: Without dead ends: 3165 [2020-10-26 23:55:23,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:55:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2020-10-26 23:55:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 3130. [2020-10-26 23:55:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3130 states. [2020-10-26 23:55:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 4201 transitions. [2020-10-26 23:55:23,749 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 4201 transitions. Word has length 327 [2020-10-26 23:55:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:23,752 INFO L481 AbstractCegarLoop]: Abstraction has 3130 states and 4201 transitions. [2020-10-26 23:55:23,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:55:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 4201 transitions. [2020-10-26 23:55:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-26 23:55:23,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:23,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:23,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:55:23,762 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash -911919366, now seen corresponding path program 1 times [2020-10-26 23:55:23,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:23,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005466066] [2020-10-26 23:55:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-26 23:55:27,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:55:27,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3979 [2020-10-26 23:55:27,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:55:27,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:55:27,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:27,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:55:27,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:28,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:28,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:28,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:28,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:55:28,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:55:28,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:28,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:55:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:28,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:28,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:55:28,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-26 23:55:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:55:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:28,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-26 23:55:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:28,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 23:55:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:55:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 194 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:55:29,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005466066] [2020-10-26 23:55:29,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:29,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:29,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142802807] [2020-10-26 23:55:29,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:29,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:29,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:29,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:29,135 INFO L87 Difference]: Start difference. First operand 3130 states and 4201 transitions. Second operand 7 states. [2020-10-26 23:55:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:35,174 INFO L93 Difference]: Finished difference Result 6668 states and 8905 transitions. [2020-10-26 23:55:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:35,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-26 23:55:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:35,201 INFO L225 Difference]: With dead ends: 6668 [2020-10-26 23:55:35,201 INFO L226 Difference]: Without dead ends: 3166 [2020-10-26 23:55:35,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2020-10-26 23:55:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3139. [2020-10-26 23:55:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2020-10-26 23:55:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 3402 transitions. [2020-10-26 23:55:35,298 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 3402 transitions. Word has length 355 [2020-10-26 23:55:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:35,298 INFO L481 AbstractCegarLoop]: Abstraction has 3139 states and 3402 transitions. [2020-10-26 23:55:35,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 3402 transitions. [2020-10-26 23:55:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-26 23:55:35,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:35,306 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:35,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:55:35,306 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1245599272, now seen corresponding path program 1 times [2020-10-26 23:55:35,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:35,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686667726] [2020-10-26 23:55:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:35,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:40,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-26 23:55:40,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:55:40,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:55:40,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:40,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:40,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:40,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:55:40,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:40,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:40,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:55:40,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:55:40,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:55:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:55:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:40,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:40,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:55:40,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:55:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:40,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:55:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:41,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:41,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:41,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:55:41,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 18 proven. 190 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-26 23:55:41,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686667726] [2020-10-26 23:55:41,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:41,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:41,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989860387] [2020-10-26 23:55:41,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:41,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:41,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:41,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:41,221 INFO L87 Difference]: Start difference. First operand 3139 states and 3402 transitions. Second operand 7 states. [2020-10-26 23:55:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:44,912 INFO L93 Difference]: Finished difference Result 6998 states and 7574 transitions. [2020-10-26 23:55:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:44,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-26 23:55:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:44,932 INFO L225 Difference]: With dead ends: 6998 [2020-10-26 23:55:44,932 INFO L226 Difference]: Without dead ends: 3865 [2020-10-26 23:55:44,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:55:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2020-10-26 23:55:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3819. [2020-10-26 23:55:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3819 states. [2020-10-26 23:55:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 4103 transitions. [2020-10-26 23:55:45,059 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 4103 transitions. Word has length 358 [2020-10-26 23:55:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:45,059 INFO L481 AbstractCegarLoop]: Abstraction has 3819 states and 4103 transitions. [2020-10-26 23:55:45,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:45,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 4103 transitions. [2020-10-26 23:55:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-26 23:55:45,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:45,075 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:45,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:55:45,076 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:45,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1269743750, now seen corresponding path program 1 times [2020-10-26 23:55:45,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:45,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340489434] [2020-10-26 23:55:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:49,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-26 23:55:49,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:55:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4088 [2020-10-26 23:55:49,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:55:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:49,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:49,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:55:49,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:49,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:55:49,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-26 23:55:49,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:55:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:55:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:50,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 23:55:50,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:50,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:50,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:55:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:50,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:55:50,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:55:50,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:50,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:50,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:55:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 148 proven. 114 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:55:50,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340489434] [2020-10-26 23:55:50,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:50,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:55:50,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162311573] [2020-10-26 23:55:50,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:50,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:50,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:50,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:50,385 INFO L87 Difference]: Start difference. First operand 3819 states and 4103 transitions. Second operand 7 states. [2020-10-26 23:55:54,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:54,924 INFO L93 Difference]: Finished difference Result 9034 states and 9862 transitions. [2020-10-26 23:55:54,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:55:54,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 497 [2020-10-26 23:55:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:54,946 INFO L225 Difference]: With dead ends: 9034 [2020-10-26 23:55:54,946 INFO L226 Difference]: Without dead ends: 5212 [2020-10-26 23:55:54,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:55:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2020-10-26 23:55:55,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 4861. [2020-10-26 23:55:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4861 states. [2020-10-26 23:55:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4861 states to 4861 states and 5205 transitions. [2020-10-26 23:55:55,072 INFO L78 Accepts]: Start accepts. Automaton has 4861 states and 5205 transitions. Word has length 497 [2020-10-26 23:55:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:55,073 INFO L481 AbstractCegarLoop]: Abstraction has 4861 states and 5205 transitions. [2020-10-26 23:55:55,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 5205 transitions. [2020-10-26 23:55:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2020-10-26 23:55:55,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:55,090 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:55,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:55:55,091 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1409450906, now seen corresponding path program 1 times [2020-10-26 23:55:55,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:55,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973178700] [2020-10-26 23:55:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:55,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:59,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:59,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 623 [2020-10-26 23:55:59,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:55:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4474 [2020-10-26 23:55:59,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:55:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:55:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:59,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:59,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:59,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:59,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:59,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:55:59,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:59,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:59,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:59,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:59,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:59,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:59,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:55:59,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:00,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:00,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:00,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:56:00,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:00,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:00,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:56:00,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:56:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:00,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:00,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:00,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:56:00,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:00,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 260 proven. 114 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-26 23:56:00,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973178700] [2020-10-26 23:56:00,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:00,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:56:00,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475206373] [2020-10-26 23:56:00,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:56:00,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:00,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:56:00,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:56:00,783 INFO L87 Difference]: Start difference. First operand 4861 states and 5205 transitions. Second operand 8 states. [2020-10-26 23:56:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:07,015 INFO L93 Difference]: Finished difference Result 12795 states and 13935 transitions. [2020-10-26 23:56:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:07,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 605 [2020-10-26 23:56:07,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:07,049 INFO L225 Difference]: With dead ends: 12795 [2020-10-26 23:56:07,049 INFO L226 Difference]: Without dead ends: 7937 [2020-10-26 23:56:07,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:56:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2020-10-26 23:56:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 7589. [2020-10-26 23:56:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7589 states. [2020-10-26 23:56:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 8167 transitions. [2020-10-26 23:56:07,241 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 8167 transitions. Word has length 605 [2020-10-26 23:56:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:07,242 INFO L481 AbstractCegarLoop]: Abstraction has 7589 states and 8167 transitions. [2020-10-26 23:56:07,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:56:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 8167 transitions. [2020-10-26 23:56:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-26 23:56:07,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:07,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:07,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:56:07,263 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:07,264 INFO L82 PathProgramCache]: Analyzing trace with hash -837414042, now seen corresponding path program 1 times [2020-10-26 23:56:07,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:07,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270674470] [2020-10-26 23:56:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:12,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:56:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:12,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:12,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:12,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:12,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:56:12,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:12,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:12,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:12,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:12,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-26 23:56:12,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:56:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:13,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:13,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:56:13,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 23:56:13,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:56:13,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:56:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:13,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:13,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:56:13,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 263 proven. 222 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:56:14,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270674470] [2020-10-26 23:56:14,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:14,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:56:14,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514918413] [2020-10-26 23:56:14,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:56:14,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:14,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:56:14,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:56:14,376 INFO L87 Difference]: Start difference. First operand 7589 states and 8167 transitions. Second operand 8 states. [2020-10-26 23:56:18,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:18,262 INFO L93 Difference]: Finished difference Result 15189 states and 16366 transitions. [2020-10-26 23:56:18,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:56:18,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 625 [2020-10-26 23:56:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:18,288 INFO L225 Difference]: With dead ends: 15189 [2020-10-26 23:56:18,288 INFO L226 Difference]: Without dead ends: 7945 [2020-10-26 23:56:18,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:56:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2020-10-26 23:56:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 7591. [2020-10-26 23:56:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7591 states. [2020-10-26 23:56:18,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 8148 transitions. [2020-10-26 23:56:18,484 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 8148 transitions. Word has length 625 [2020-10-26 23:56:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:18,485 INFO L481 AbstractCegarLoop]: Abstraction has 7591 states and 8148 transitions. [2020-10-26 23:56:18,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:56:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 8148 transitions. [2020-10-26 23:56:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-26 23:56:18,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:18,498 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:18,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:56:18,499 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:18,500 INFO L82 PathProgramCache]: Analyzing trace with hash 510041422, now seen corresponding path program 1 times [2020-10-26 23:56:18,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:18,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759253213] [2020-10-26 23:56:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:23,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:23,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-26 23:56:23,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:23,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:56:23,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:56:23,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:56:23,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:23,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:23,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:23,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:56:23,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:23,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:24,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:56:24,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:24,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:24,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:56:24,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:56:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:56:24,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:24,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:56:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-26 23:56:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-26 23:56:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:24,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:56:24,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:56:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-26 23:56:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:56:24,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:24,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 201 proven. 307 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-26 23:56:25,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759253213] [2020-10-26 23:56:25,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:25,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:25,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984678316] [2020-10-26 23:56:25,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:25,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:25,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:25,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:25,275 INFO L87 Difference]: Start difference. First operand 7591 states and 8148 transitions. Second operand 7 states. [2020-10-26 23:56:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:29,669 INFO L93 Difference]: Finished difference Result 14852 states and 15975 transitions. [2020-10-26 23:56:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:56:29,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 729 [2020-10-26 23:56:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:29,692 INFO L225 Difference]: With dead ends: 14852 [2020-10-26 23:56:29,692 INFO L226 Difference]: Without dead ends: 7606 [2020-10-26 23:56:29,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:56:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2020-10-26 23:56:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7595. [2020-10-26 23:56:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7595 states. [2020-10-26 23:56:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 8141 transitions. [2020-10-26 23:56:29,878 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 8141 transitions. Word has length 729 [2020-10-26 23:56:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:29,879 INFO L481 AbstractCegarLoop]: Abstraction has 7595 states and 8141 transitions. [2020-10-26 23:56:29,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 8141 transitions. [2020-10-26 23:56:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2020-10-26 23:56:29,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:29,891 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:29,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:56:29,891 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -874690384, now seen corresponding path program 1 times [2020-10-26 23:56:29,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:29,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478282891] [2020-10-26 23:56:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:30,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 752 [2020-10-26 23:56:35,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 23:56:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:56:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:35,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:56:35,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:35,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:56:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:56:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:35,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-26 23:56:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:56:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:56:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-10-26 23:56:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:35,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:56:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 303 proven. 181 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2020-10-26 23:56:36,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478282891] [2020-10-26 23:56:36,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:36,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:36,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189764322] [2020-10-26 23:56:36,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:36,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:36,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:36,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:36,106 INFO L87 Difference]: Start difference. First operand 7595 states and 8141 transitions. Second operand 7 states. [2020-10-26 23:56:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:40,644 INFO L93 Difference]: Finished difference Result 16214 states and 17589 transitions. [2020-10-26 23:56:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:40,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 732 [2020-10-26 23:56:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:40,674 INFO L225 Difference]: With dead ends: 16214 [2020-10-26 23:56:40,675 INFO L226 Difference]: Without dead ends: 8964 [2020-10-26 23:56:40,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8964 states. [2020-10-26 23:56:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8964 to 8950. [2020-10-26 23:56:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8950 states. [2020-10-26 23:56:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8950 states to 8950 states and 9540 transitions. [2020-10-26 23:56:40,870 INFO L78 Accepts]: Start accepts. Automaton has 8950 states and 9540 transitions. Word has length 732 [2020-10-26 23:56:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:40,871 INFO L481 AbstractCegarLoop]: Abstraction has 8950 states and 9540 transitions. [2020-10-26 23:56:40,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 8950 states and 9540 transitions. [2020-10-26 23:56:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-26 23:56:40,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:40,896 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:40,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:56:40,896 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1256370042, now seen corresponding path program 1 times [2020-10-26 23:56:40,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:40,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797594276] [2020-10-26 23:56:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:41,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:41,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:56:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:46,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:46,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:46,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:46,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:46,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:46,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:56:46,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:56:46,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:56:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:56:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:46,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:46,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:56:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:47,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:56:47,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:56:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:56:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:56:47,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:56:47,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:56:47,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-26 23:56:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:47,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:47,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1839 backedges. 317 proven. 321 refuted. 0 times theorem prover too weak. 1201 trivial. 0 not checked. [2020-10-26 23:56:47,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797594276] [2020-10-26 23:56:47,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:47,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:47,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268166926] [2020-10-26 23:56:47,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:47,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:47,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:47,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:47,873 INFO L87 Difference]: Start difference. First operand 8950 states and 9540 transitions. Second operand 7 states. [2020-10-26 23:56:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:53,071 INFO L93 Difference]: Finished difference Result 20625 states and 22092 transitions. [2020-10-26 23:56:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:56:53,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 961 [2020-10-26 23:56:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:53,107 INFO L225 Difference]: With dead ends: 20625 [2020-10-26 23:56:53,107 INFO L226 Difference]: Without dead ends: 12020 [2020-10-26 23:56:53,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:56:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2020-10-26 23:56:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 12016. [2020-10-26 23:56:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12016 states. [2020-10-26 23:56:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12016 states to 12016 states and 12766 transitions. [2020-10-26 23:56:53,346 INFO L78 Accepts]: Start accepts. Automaton has 12016 states and 12766 transitions. Word has length 961 [2020-10-26 23:56:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:53,348 INFO L481 AbstractCegarLoop]: Abstraction has 12016 states and 12766 transitions. [2020-10-26 23:56:53,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12016 states and 12766 transitions. [2020-10-26 23:56:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-26 23:56:53,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:53,373 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:53,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:56:53,374 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:53,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1630151324, now seen corresponding path program 1 times [2020-10-26 23:56:53,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:53,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378008947] [2020-10-26 23:56:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:53,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:58,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-26 23:56:58,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:58,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:56:58,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:56:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:58,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:58,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:58,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:58,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:56:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:58,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:56:59,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:56:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:56:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:56:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:59,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:56:59,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:56:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:56:59,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:56:59,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:56:59,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:56:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:56:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:56:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:56:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-10-26 23:56:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 23:56:59,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:56:59,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-26 23:56:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 317 proven. 307 refuted. 0 times theorem prover too weak. 1298 trivial. 0 not checked. [2020-10-26 23:57:00,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378008947] [2020-10-26 23:57:00,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:00,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:57:00,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547906099] [2020-10-26 23:57:00,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:57:00,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:00,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:57:00,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:00,668 INFO L87 Difference]: Start difference. First operand 12016 states and 12766 transitions. Second operand 8 states. [2020-10-26 23:57:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:05,787 INFO L93 Difference]: Finished difference Result 28099 states and 30112 transitions. [2020-10-26 23:57:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:57:05,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1042 [2020-10-26 23:57:05,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:05,836 INFO L225 Difference]: With dead ends: 28099 [2020-10-26 23:57:05,837 INFO L226 Difference]: Without dead ends: 16428 [2020-10-26 23:57:05,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:57:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16428 states. [2020-10-26 23:57:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16428 to 14737. [2020-10-26 23:57:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14737 states. [2020-10-26 23:57:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14737 states to 14737 states and 15857 transitions. [2020-10-26 23:57:06,163 INFO L78 Accepts]: Start accepts. Automaton has 14737 states and 15857 transitions. Word has length 1042 [2020-10-26 23:57:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:06,164 INFO L481 AbstractCegarLoop]: Abstraction has 14737 states and 15857 transitions. [2020-10-26 23:57:06,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:57:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 14737 states and 15857 transitions. [2020-10-26 23:57:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2020-10-26 23:57:06,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:06,194 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:06,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:57:06,194 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:06,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:06,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1244135602, now seen corresponding path program 1 times [2020-10-26 23:57:06,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:06,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433220233] [2020-10-26 23:57:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1111 [2020-10-26 23:57:11,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:11,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:57:11,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:57:11,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:57:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:57:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:11,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:57:11,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:57:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:57:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:57:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:57:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:11,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:57:11,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:57:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:11,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:57:11,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:11,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:57:11,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:57:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:12,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:57:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-26 23:57:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:12,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:12,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 23:57:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:57:12,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-26 23:57:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 582 proven. 114 refuted. 0 times theorem prover too weak. 1684 trivial. 0 not checked. [2020-10-26 23:57:13,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433220233] [2020-10-26 23:57:13,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:13,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:13,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477523045] [2020-10-26 23:57:13,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:13,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:13,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:13,120 INFO L87 Difference]: Start difference. First operand 14737 states and 15857 transitions. Second operand 7 states. [2020-10-26 23:57:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:19,455 INFO L93 Difference]: Finished difference Result 33197 states and 35705 transitions. [2020-10-26 23:57:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:19,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1087 [2020-10-26 23:57:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:19,512 INFO L225 Difference]: With dead ends: 33197 [2020-10-26 23:57:19,512 INFO L226 Difference]: Without dead ends: 18805 [2020-10-26 23:57:19,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:19,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18805 states. [2020-10-26 23:57:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18805 to 18126. [2020-10-26 23:57:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18126 states. [2020-10-26 23:57:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18126 states to 18126 states and 19377 transitions. [2020-10-26 23:57:20,165 INFO L78 Accepts]: Start accepts. Automaton has 18126 states and 19377 transitions. Word has length 1087 [2020-10-26 23:57:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:20,166 INFO L481 AbstractCegarLoop]: Abstraction has 18126 states and 19377 transitions. [2020-10-26 23:57:20,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 18126 states and 19377 transitions. [2020-10-26 23:57:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2020-10-26 23:57:20,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:20,206 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:20,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:57:20,207 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1298810484, now seen corresponding path program 1 times [2020-10-26 23:57:20,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:20,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788158671] [2020-10-26 23:57:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:20,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:25,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1142 [2020-10-26 23:57:25,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:57:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:57:25,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:57:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:57:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:25,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:25,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:57:25,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:25,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:25,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:25,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:57:25,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:25,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:25,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:25,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:57:25,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:57:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:25,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:57:25,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:25,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:57:25,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:57:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:26,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:57:26,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:57:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:57:26,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:26,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 23:57:26,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:26,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:57:26,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:57:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:57:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:57:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:57:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-26 23:57:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:26,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:26,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-26 23:57:26,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:57:26,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-26 23:57:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2613 backedges. 482 proven. 82 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2020-10-26 23:57:27,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788158671] [2020-10-26 23:57:27,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:27,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:27,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054697877] [2020-10-26 23:57:27,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:27,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:27,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:27,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:27,377 INFO L87 Difference]: Start difference. First operand 18126 states and 19377 transitions. Second operand 7 states. [2020-10-26 23:57:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:34,092 INFO L93 Difference]: Finished difference Result 37947 states and 40621 transitions. [2020-10-26 23:57:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:34,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1118 [2020-10-26 23:57:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:34,148 INFO L225 Difference]: With dead ends: 37947 [2020-10-26 23:57:34,148 INFO L226 Difference]: Without dead ends: 19827 [2020-10-26 23:57:34,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:34,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19827 states. [2020-10-26 23:57:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19827 to 19819. [2020-10-26 23:57:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19819 states. [2020-10-26 23:57:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19819 states to 19819 states and 21164 transitions. [2020-10-26 23:57:34,560 INFO L78 Accepts]: Start accepts. Automaton has 19819 states and 21164 transitions. Word has length 1118 [2020-10-26 23:57:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:34,562 INFO L481 AbstractCegarLoop]: Abstraction has 19819 states and 21164 transitions. [2020-10-26 23:57:34,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand 19819 states and 21164 transitions. [2020-10-26 23:57:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2020-10-26 23:57:34,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:34,601 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:34,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:57:34,601 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash -30235348, now seen corresponding path program 1 times [2020-10-26 23:57:34,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:34,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281902161] [2020-10-26 23:57:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:39,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:39,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1226 [2020-10-26 23:57:39,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 23:57:39,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:57:39,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-26 23:57:39,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:57:40,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:57:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:57:40,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:57:40,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:57:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:40,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:57:40,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:57:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:40,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:57:40,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:57:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:57:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-26 23:57:40,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-26 23:57:40,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-26 23:57:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 978 [2020-10-26 23:57:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1120 [2020-10-26 23:57:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:57:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:57:41,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:57:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2995 backedges. 801 proven. 212 refuted. 0 times theorem prover too weak. 1982 trivial. 0 not checked. [2020-10-26 23:57:42,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281902161] [2020-10-26 23:57:42,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:42,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:42,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762491974] [2020-10-26 23:57:42,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:42,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:42,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:42,477 INFO L87 Difference]: Start difference. First operand 19819 states and 21164 transitions. Second operand 7 states. [2020-10-26 23:57:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:47,245 INFO L93 Difference]: Finished difference Result 39300 states and 42018 transitions. [2020-10-26 23:57:47,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:57:47,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1200 [2020-10-26 23:57:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:47,301 INFO L225 Difference]: With dead ends: 39300 [2020-10-26 23:57:47,301 INFO L226 Difference]: Without dead ends: 20167 [2020-10-26 23:57:47,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:57:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20167 states. [2020-10-26 23:57:47,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20167 to 20158. [2020-10-26 23:57:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20158 states. [2020-10-26 23:57:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20158 states to 20158 states and 21497 transitions. [2020-10-26 23:57:47,894 INFO L78 Accepts]: Start accepts. Automaton has 20158 states and 21497 transitions. Word has length 1200 [2020-10-26 23:57:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:47,895 INFO L481 AbstractCegarLoop]: Abstraction has 20158 states and 21497 transitions. [2020-10-26 23:57:47,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 20158 states and 21497 transitions. [2020-10-26 23:57:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2020-10-26 23:57:47,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:47,930 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:47,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:57:47,930 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:47,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:47,931 INFO L82 PathProgramCache]: Analyzing trace with hash 516458134, now seen corresponding path program 1 times [2020-10-26 23:57:47,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:47,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037051530] [2020-10-26 23:57:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1229 [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4029 [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 961 [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-26 23:57:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:52,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:52,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:57:52,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:52,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:52,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:52,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:57:52,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:52,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:52,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:52,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:57:52,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:57:52,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:52,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:57:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:53,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:53,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:53,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:57:53,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:57:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:57:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-26 23:57:53,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:57:53,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-26 23:57:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:57:53,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:57:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:53,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 951 [2020-10-26 23:57:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:53,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:53,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-26 23:57:53,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:53,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-26 23:57:53,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-26 23:57:53,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 984 proven. 2 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2020-10-26 23:57:55,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037051530] [2020-10-26 23:57:55,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:55,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:55,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62543010] [2020-10-26 23:57:55,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:55,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:55,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:55,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:55,050 INFO L87 Difference]: Start difference. First operand 20158 states and 21497 transitions. Second operand 7 states. [2020-10-26 23:57:59,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:59,910 INFO L93 Difference]: Finished difference Result 40310 states and 42999 transitions. [2020-10-26 23:57:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:57:59,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1207 [2020-10-26 23:57:59,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:59,952 INFO L225 Difference]: With dead ends: 40310 [2020-10-26 23:57:59,952 INFO L226 Difference]: Without dead ends: 20838 [2020-10-26 23:57:59,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20838 states. [2020-10-26 23:58:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20838 to 20493. [2020-10-26 23:58:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20493 states. [2020-10-26 23:58:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20493 states to 20493 states and 21826 transitions. [2020-10-26 23:58:00,321 INFO L78 Accepts]: Start accepts. Automaton has 20493 states and 21826 transitions. Word has length 1207 [2020-10-26 23:58:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:00,322 INFO L481 AbstractCegarLoop]: Abstraction has 20493 states and 21826 transitions. [2020-10-26 23:58:00,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 20493 states and 21826 transitions. [2020-10-26 23:58:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2020-10-26 23:58:00,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:00,356 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:00,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:58:00,356 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:00,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1775212760, now seen corresponding path program 1 times [2020-10-26 23:58:00,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:00,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379431911] [2020-10-26 23:58:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking...