/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:58:29,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:58:29,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:58:29,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:58:29,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:58:29,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:58:29,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:58:29,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:58:29,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:58:29,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:58:29,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:58:29,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:58:29,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:58:29,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:58:29,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:58:29,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:58:29,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:58:29,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:58:29,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:58:29,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:58:29,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:58:29,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:58:29,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:58:29,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:58:29,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:58:29,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:58:29,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:58:29,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:58:29,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:58:29,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:58:29,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:58:29,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:58:29,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:58:29,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:58:29,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:58:29,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:58:29,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:58:29,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:58:29,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:58:29,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:58:29,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:58:29,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:58:29,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:58:29,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:58:29,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:58:29,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:58:29,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:58:29,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:58:29,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:58:29,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:58:29,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:58:29,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:58:29,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:58:29,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:58:29,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:58:29,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:58:29,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:58:29,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:58:29,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:58:29,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:58:29,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:58:29,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:58:29,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:58:29,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:29,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:58:29,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:58:29,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:58:29,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:58:29,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:58:29,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:58:29,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:58:29,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:58:29,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:58:29,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:58:29,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:58:29,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:58:29,708 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:58:29,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41.c [2020-10-29 04:58:29,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95af32014/2e9bf922461f4c278adccb2a4ba634a3/FLAGff0184a5f [2020-10-29 04:58:30,689 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:58:30,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label41.c [2020-10-29 04:58:30,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95af32014/2e9bf922461f4c278adccb2a4ba634a3/FLAGff0184a5f [2020-10-29 04:58:30,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95af32014/2e9bf922461f4c278adccb2a4ba634a3 [2020-10-29 04:58:30,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:58:30,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:58:30,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:30,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:58:30,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:58:30,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:30" (1/1) ... [2020-10-29 04:58:30,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca2628f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:30, skipping insertion in model container [2020-10-29 04:58:30,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:58:30" (1/1) ... [2020-10-29 04:58:30,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:58:30,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:58:31,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:31,746 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:58:31,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:58:32,020 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:58:32,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32 WrapperNode [2020-10-29 04:58:32,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:58:32,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:58:32,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:58:32,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:58:32,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... [2020-10-29 04:58:32,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... [2020-10-29 04:58:32,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... [2020-10-29 04:58:32,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... [2020-10-29 04:58:32,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... [2020-10-29 04:58:32,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... [2020-10-29 04:58:32,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... [2020-10-29 04:58:32,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:58:32,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:58:32,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:58:32,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:58:32,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:58:32,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:58:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:58:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:58:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:58:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:58:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:58:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:58:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:58:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:58:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:58:34,519 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:58:34,520 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:58:34,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:34 BoogieIcfgContainer [2020-10-29 04:58:34,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:58:34,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:58:34,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:58:34,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:58:34,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:58:30" (1/3) ... [2020-10-29 04:58:34,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f6546d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:34, skipping insertion in model container [2020-10-29 04:58:34,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:58:32" (2/3) ... [2020-10-29 04:58:34,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f6546d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:58:34, skipping insertion in model container [2020-10-29 04:58:34,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:58:34" (3/3) ... [2020-10-29 04:58:34,540 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label41.c [2020-10-29 04:58:34,554 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:58:34,561 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:58:34,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:58:34,612 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:58:34,612 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:58:34,613 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:58:34,613 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:58:34,613 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:58:34,613 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:58:34,613 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:58:34,613 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:58:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:58:34,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 04:58:34,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:34,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:34,660 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:34,667 INFO L82 PathProgramCache]: Analyzing trace with hash -683316068, now seen corresponding path program 1 times [2020-10-29 04:58:34,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:34,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396895254] [2020-10-29 04:58:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:40,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:40,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 04:58:40,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 04:58:40,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:40,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:58:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:58:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 04:58:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:58:40,732 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:40,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:40,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:40,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:40,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 04:58:40,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:40,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:40,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:58:40,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:40,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396895254] [2020-10-29 04:58:40,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:58:40,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:58:40,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256501634] [2020-10-29 04:58:40,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:40,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:40,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:40,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:40,967 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2020-10-29 04:58:41,254 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:41,871 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:46,556 INFO L93 Difference]: Finished difference Result 1109 states and 1970 transitions. [2020-10-29 04:58:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:58:46,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-29 04:58:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:46,585 INFO L225 Difference]: With dead ends: 1109 [2020-10-29 04:58:46,585 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 04:58:46,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:58:46,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 04:58:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 473. [2020-10-29 04:58:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-29 04:58:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 723 transitions. [2020-10-29 04:58:46,717 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 723 transitions. Word has length 189 [2020-10-29 04:58:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:46,719 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 723 transitions. [2020-10-29 04:58:46,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 723 transitions. [2020-10-29 04:58:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 04:58:46,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:46,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:46,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:58:46,728 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:46,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:46,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1606113291, now seen corresponding path program 1 times [2020-10-29 04:58:46,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:46,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072587793] [2020-10-29 04:58:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:46,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:49,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:49,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 04:58:49,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:49,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2616 [2020-10-29 04:58:49,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:49,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:58:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 04:58:49,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:58:49,809 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:49,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:49,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:49,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:49,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:58:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:49,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:58:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:49,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:49,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:58:49,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 04:58:49,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:49,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:58:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:50,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072587793] [2020-10-29 04:58:50,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:50,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:50,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033644251] [2020-10-29 04:58:50,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:50,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:50,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:50,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:50,082 INFO L87 Difference]: Start difference. First operand 473 states and 723 transitions. Second operand 5 states. [2020-10-29 04:58:50,463 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:53,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:53,891 INFO L93 Difference]: Finished difference Result 1367 states and 2120 transitions. [2020-10-29 04:58:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:58:53,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-29 04:58:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:53,903 INFO L225 Difference]: With dead ends: 1367 [2020-10-29 04:58:53,904 INFO L226 Difference]: Without dead ends: 900 [2020-10-29 04:58:53,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:58:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-10-29 04:58:53,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 893. [2020-10-29 04:58:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-10-29 04:58:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1217 transitions. [2020-10-29 04:58:53,979 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1217 transitions. Word has length 198 [2020-10-29 04:58:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:53,980 INFO L481 AbstractCegarLoop]: Abstraction has 893 states and 1217 transitions. [2020-10-29 04:58:53,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:58:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1217 transitions. [2020-10-29 04:58:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 04:58:53,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:53,988 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:53,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:58:53,988 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:53,989 INFO L82 PathProgramCache]: Analyzing trace with hash 376939497, now seen corresponding path program 1 times [2020-10-29 04:58:53,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:53,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387252324] [2020-10-29 04:58:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 04:58:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2911 [2020-10-29 04:58:56,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:56,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 04:58:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 04:58:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:57,340 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:57,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:57,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:57,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:58:57,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:57,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:57,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:57,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:57,513 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:58:57,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:57,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:57,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:57,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:58:57,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 04:58:57,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:57,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:58:57,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:58:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:58:57,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387252324] [2020-10-29 04:58:57,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:57,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:58:57,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545605364] [2020-10-29 04:58:57,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:58:57,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:58:57,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:58:57,761 INFO L87 Difference]: Start difference. First operand 893 states and 1217 transitions. Second operand 5 states. [2020-10-29 04:58:58,158 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:01,339 INFO L93 Difference]: Finished difference Result 2205 states and 3120 transitions. [2020-10-29 04:59:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:01,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-29 04:59:01,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:01,354 INFO L225 Difference]: With dead ends: 2205 [2020-10-29 04:59:01,354 INFO L226 Difference]: Without dead ends: 1318 [2020-10-29 04:59:01,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-29 04:59:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1311. [2020-10-29 04:59:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-29 04:59:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1835 transitions. [2020-10-29 04:59:01,447 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1835 transitions. Word has length 207 [2020-10-29 04:59:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:01,449 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1835 transitions. [2020-10-29 04:59:01,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1835 transitions. [2020-10-29 04:59:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 04:59:01,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:01,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:01,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:59:01,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1375931124, now seen corresponding path program 1 times [2020-10-29 04:59:01,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:01,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738081774] [2020-10-29 04:59:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:05,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-29 04:59:05,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:59:05,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3865 [2020-10-29 04:59:05,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:05,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 04:59:05,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 04:59:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:05,728 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:05,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:05,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:05,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:05,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:05,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:05,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:05,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:59:05,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:05,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 04:59:05,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:05,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:59:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:59:06,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738081774] [2020-10-29 04:59:06,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:06,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:06,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317319577] [2020-10-29 04:59:06,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:06,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:06,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:06,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:06,063 INFO L87 Difference]: Start difference. First operand 1311 states and 1835 transitions. Second operand 5 states. [2020-10-29 04:59:06,319 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:09,772 INFO L93 Difference]: Finished difference Result 3894 states and 5567 transitions. [2020-10-29 04:59:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:09,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-29 04:59:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:09,791 INFO L225 Difference]: With dead ends: 3894 [2020-10-29 04:59:09,792 INFO L226 Difference]: Without dead ends: 2589 [2020-10-29 04:59:09,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2020-10-29 04:59:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2569. [2020-10-29 04:59:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2569 states. [2020-10-29 04:59:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3616 transitions. [2020-10-29 04:59:09,936 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3616 transitions. Word has length 225 [2020-10-29 04:59:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:09,936 INFO L481 AbstractCegarLoop]: Abstraction has 2569 states and 3616 transitions. [2020-10-29 04:59:09,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3616 transitions. [2020-10-29 04:59:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-29 04:59:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:09,951 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:09,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:59:09,952 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:09,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2076852702, now seen corresponding path program 1 times [2020-10-29 04:59:09,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:09,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784865803] [2020-10-29 04:59:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:12,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 04:59:15,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 04:59:15,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 04:59:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 04:59:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:15,471 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:15,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:59:15,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:59:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:15,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:59:15,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:59:15,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:59:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:15,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:15,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 04:59:15,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 04:59:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:15,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:59:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:59:15,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784865803] [2020-10-29 04:59:15,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:15,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:15,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593372033] [2020-10-29 04:59:15,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:15,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:15,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:15,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:15,828 INFO L87 Difference]: Start difference. First operand 2569 states and 3616 transitions. Second operand 5 states. [2020-10-29 04:59:16,095 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:59:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:19,452 INFO L93 Difference]: Finished difference Result 7655 states and 11091 transitions. [2020-10-29 04:59:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:19,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-29 04:59:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:19,490 INFO L225 Difference]: With dead ends: 7655 [2020-10-29 04:59:19,491 INFO L226 Difference]: Without dead ends: 5092 [2020-10-29 04:59:19,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2020-10-29 04:59:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 5083. [2020-10-29 04:59:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5083 states. [2020-10-29 04:59:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 7066 transitions. [2020-10-29 04:59:19,696 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 7066 transitions. Word has length 234 [2020-10-29 04:59:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:19,697 INFO L481 AbstractCegarLoop]: Abstraction has 5083 states and 7066 transitions. [2020-10-29 04:59:19,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 7066 transitions. [2020-10-29 04:59:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 04:59:19,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:19,716 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:19,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:59:19,716 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:19,717 INFO L82 PathProgramCache]: Analyzing trace with hash 696105885, now seen corresponding path program 1 times [2020-10-29 04:59:19,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:19,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728286729] [2020-10-29 04:59:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:19,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:24,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 04:59:24,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 04:59:24,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:24,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 04:59:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 04:59:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:25,200 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:25,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:25,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:25,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:59:25,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:25,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:25,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 04:59:25,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 04:59:25,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:25,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:59:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:25,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:25,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:25,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:25,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:59:25,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:25,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:59:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:59:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728286729] [2020-10-29 04:59:25,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:25,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:25,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105199059] [2020-10-29 04:59:25,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:25,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:25,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:25,565 INFO L87 Difference]: Start difference. First operand 5083 states and 7066 transitions. Second operand 5 states. [2020-10-29 04:59:25,817 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:29,099 INFO L93 Difference]: Finished difference Result 14783 states and 21079 transitions. [2020-10-29 04:59:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:29,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-29 04:59:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:29,155 INFO L225 Difference]: With dead ends: 14783 [2020-10-29 04:59:29,155 INFO L226 Difference]: Without dead ends: 9706 [2020-10-29 04:59:29,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9706 states. [2020-10-29 04:59:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 9683. [2020-10-29 04:59:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9683 states. [2020-10-29 04:59:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9683 states to 9683 states and 13866 transitions. [2020-10-29 04:59:29,565 INFO L78 Accepts]: Start accepts. Automaton has 9683 states and 13866 transitions. Word has length 251 [2020-10-29 04:59:29,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:29,566 INFO L481 AbstractCegarLoop]: Abstraction has 9683 states and 13866 transitions. [2020-10-29 04:59:29,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 9683 states and 13866 transitions. [2020-10-29 04:59:29,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 04:59:29,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:29,608 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:29,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:59:29,609 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:29,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:29,609 INFO L82 PathProgramCache]: Analyzing trace with hash -751040787, now seen corresponding path program 1 times [2020-10-29 04:59:29,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:29,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240182715] [2020-10-29 04:59:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:30,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:34,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:34,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 04:59:34,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:34,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 04:59:34,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:34,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-29 04:59:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 04:59:34,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:35,186 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:35,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:35,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:35,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:35,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:59:35,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:35,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:35,359 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:59:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:35,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:35,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:59:35,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:59:35,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:35,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:35,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:59:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:35,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:35,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 04:59:35,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 04:59:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:35,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 04:59:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:59:35,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240182715] [2020-10-29 04:59:35,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:35,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:59:35,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538653939] [2020-10-29 04:59:35,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:59:35,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:35,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:59:35,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:59:35,740 INFO L87 Difference]: Start difference. First operand 9683 states and 13866 transitions. Second operand 5 states. [2020-10-29 04:59:36,029 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:59:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:39,334 INFO L93 Difference]: Finished difference Result 26290 states and 38605 transitions. [2020-10-29 04:59:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:59:39,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-29 04:59:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:39,431 INFO L225 Difference]: With dead ends: 26290 [2020-10-29 04:59:39,431 INFO L226 Difference]: Without dead ends: 16613 [2020-10-29 04:59:39,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:59:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16613 states. [2020-10-29 04:59:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16613 to 16184. [2020-10-29 04:59:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16184 states. [2020-10-29 04:59:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16184 states to 16184 states and 23067 transitions. [2020-10-29 04:59:40,094 INFO L78 Accepts]: Start accepts. Automaton has 16184 states and 23067 transitions. Word has length 323 [2020-10-29 04:59:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:40,095 INFO L481 AbstractCegarLoop]: Abstraction has 16184 states and 23067 transitions. [2020-10-29 04:59:40,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:59:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 16184 states and 23067 transitions. [2020-10-29 04:59:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 04:59:40,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:40,238 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:40,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:59:40,238 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:40,239 INFO L82 PathProgramCache]: Analyzing trace with hash 653793566, now seen corresponding path program 1 times [2020-10-29 04:59:40,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:40,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900967074] [2020-10-29 04:59:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:44,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:44,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-29 04:59:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:59:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4397 [2020-10-29 04:59:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:44,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:59:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 04:59:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:45,112 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:45,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:59:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:45,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:45,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:45,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:45,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:59:45,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:45,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:59:45,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:45,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:45,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:45,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:59:45,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:59:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:45,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 04:59:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:59:45,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900967074] [2020-10-29 04:59:45,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:45,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:45,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953094866] [2020-10-29 04:59:45,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:45,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:45,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:45,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:45,961 INFO L87 Difference]: Start difference. First operand 16184 states and 23067 transitions. Second operand 7 states. [2020-10-29 04:59:46,375 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:59:47,660 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:59:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:59:52,175 INFO L93 Difference]: Finished difference Result 37597 states and 57745 transitions. [2020-10-29 04:59:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:59:52,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-29 04:59:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:59:52,289 INFO L225 Difference]: With dead ends: 37597 [2020-10-29 04:59:52,289 INFO L226 Difference]: Without dead ends: 21837 [2020-10-29 04:59:52,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:59:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21837 states. [2020-10-29 04:59:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21837 to 21219. [2020-10-29 04:59:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21219 states. [2020-10-29 04:59:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21219 states to 21219 states and 29739 transitions. [2020-10-29 04:59:53,306 INFO L78 Accepts]: Start accepts. Automaton has 21219 states and 29739 transitions. Word has length 350 [2020-10-29 04:59:53,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:59:53,306 INFO L481 AbstractCegarLoop]: Abstraction has 21219 states and 29739 transitions. [2020-10-29 04:59:53,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:59:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 21219 states and 29739 transitions. [2020-10-29 04:59:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 04:59:53,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:59:53,387 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:59:53,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:59:53,388 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:59:53,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:59:53,389 INFO L82 PathProgramCache]: Analyzing trace with hash -914589849, now seen corresponding path program 1 times [2020-10-29 04:59:53,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:59:53,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775462634] [2020-10-29 04:59:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:59:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:53,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:53,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:53,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:55,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-29 04:59:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:59:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:59:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 04:59:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 04:59:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,859 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:59:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:59:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:59:58,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:59:58,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:58,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:59:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:58,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:58,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:58,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:59:58,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:58,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:59:58,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:59,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:59:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:59:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:59,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:59:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:59,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:59,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:59,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:59:59,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:59:59,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:59,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:59:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:59:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:59:59,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:59,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:59:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:59:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:59:59,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:59:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 04:59:59,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:59:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-29 04:59:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:59:59,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:59:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:59:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:59:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 04:59:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:59:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 04:59:59,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775462634] [2020-10-29 04:59:59,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:59:59,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:59:59,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205306562] [2020-10-29 04:59:59,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:59:59,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:59:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:59:59,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:59:59,724 INFO L87 Difference]: Start difference. First operand 21219 states and 29739 transitions. Second operand 7 states. [2020-10-29 04:59:59,986 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:04,113 INFO L93 Difference]: Finished difference Result 57260 states and 83880 transitions. [2020-10-29 05:00:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:00:04,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-10-29 05:00:04,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:04,298 INFO L225 Difference]: With dead ends: 57260 [2020-10-29 05:00:04,298 INFO L226 Difference]: Without dead ends: 36909 [2020-10-29 05:00:04,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:00:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36909 states. [2020-10-29 05:00:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36909 to 36521. [2020-10-29 05:00:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36521 states. [2020-10-29 05:00:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36521 states to 36521 states and 51475 transitions. [2020-10-29 05:00:05,826 INFO L78 Accepts]: Start accepts. Automaton has 36521 states and 51475 transitions. Word has length 355 [2020-10-29 05:00:05,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:05,827 INFO L481 AbstractCegarLoop]: Abstraction has 36521 states and 51475 transitions. [2020-10-29 05:00:05,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 36521 states and 51475 transitions. [2020-10-29 05:00:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-29 05:00:05,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:05,916 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:05,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:00:05,916 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:05,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2058789238, now seen corresponding path program 1 times [2020-10-29 05:00:05,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:05,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100875847] [2020-10-29 05:00:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 05:00:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:00:11,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,300 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:11,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:11,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:00:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:11,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:11,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:00:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 05:00:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 05:00:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:11,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:00:12,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 05:00:12,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100875847] [2020-10-29 05:00:12,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:12,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:12,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845204921] [2020-10-29 05:00:12,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:12,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:12,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:12,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:12,222 INFO L87 Difference]: Start difference. First operand 36521 states and 51475 transitions. Second operand 7 states. [2020-10-29 05:00:12,480 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:13,171 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:15,984 INFO L93 Difference]: Finished difference Result 72581 states and 105281 transitions. [2020-10-29 05:00:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:00:15,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 397 [2020-10-29 05:00:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:16,167 INFO L225 Difference]: With dead ends: 72581 [2020-10-29 05:00:16,167 INFO L226 Difference]: Without dead ends: 36934 [2020-10-29 05:00:16,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36934 states. [2020-10-29 05:00:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36934 to 36621. [2020-10-29 05:00:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36621 states. [2020-10-29 05:00:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36621 states to 36621 states and 50863 transitions. [2020-10-29 05:00:17,841 INFO L78 Accepts]: Start accepts. Automaton has 36621 states and 50863 transitions. Word has length 397 [2020-10-29 05:00:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:17,842 INFO L481 AbstractCegarLoop]: Abstraction has 36621 states and 50863 transitions. [2020-10-29 05:00:17,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 36621 states and 50863 transitions. [2020-10-29 05:00:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-29 05:00:17,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:17,940 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:17,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:00:17,941 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:17,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:17,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2110279707, now seen corresponding path program 1 times [2020-10-29 05:00:17,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:17,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612208080] [2020-10-29 05:00:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:23,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:23,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-29 05:00:23,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 05:00:23,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:23,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 05:00:23,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:00:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:23,470 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:23,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:23,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:23,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:23,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:23,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:00:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:23,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:23,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 05:00:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:00:23,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:23,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 05:00:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 05:00:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:23,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 05:00:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:24,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:00:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 05:00:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:24,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:00:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-29 05:00:24,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612208080] [2020-10-29 05:00:24,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:24,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:00:24,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950893825] [2020-10-29 05:00:24,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:00:24,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:24,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:00:24,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:00:24,324 INFO L87 Difference]: Start difference. First operand 36621 states and 50863 transitions. Second operand 7 states. [2020-10-29 05:00:24,635 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:25,534 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:28,911 INFO L93 Difference]: Finished difference Result 89593 states and 126649 transitions. [2020-10-29 05:00:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:00:28,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 416 [2020-10-29 05:00:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:29,148 INFO L225 Difference]: With dead ends: 89593 [2020-10-29 05:00:29,148 INFO L226 Difference]: Without dead ends: 53852 [2020-10-29 05:00:29,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:00:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53852 states. [2020-10-29 05:00:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53852 to 52744. [2020-10-29 05:00:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52744 states. [2020-10-29 05:00:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52744 states to 52744 states and 71015 transitions. [2020-10-29 05:00:31,439 INFO L78 Accepts]: Start accepts. Automaton has 52744 states and 71015 transitions. Word has length 416 [2020-10-29 05:00:31,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:31,439 INFO L481 AbstractCegarLoop]: Abstraction has 52744 states and 71015 transitions. [2020-10-29 05:00:31,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:00:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 52744 states and 71015 transitions. [2020-10-29 05:00:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-29 05:00:31,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:31,541 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:00:31,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:00:31,541 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1334956805, now seen corresponding path program 1 times [2020-10-29 05:00:31,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:31,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554983755] [2020-10-29 05:00:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:34,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:36,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:36,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-29 05:00:36,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:00:36,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 05:00:36,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:36,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:00:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-29 05:00:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 05:00:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:37,136 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:00:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:00:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:37,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:37,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:00:37,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:00:37,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:37,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:00:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:00:37,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:37,277 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:00:37,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:00:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 05:00:37,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 05:00:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:00:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:00:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:00:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 05:00:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:37,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:37,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:37,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 05:00:37,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 05:00:37,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:37,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:37,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 05:00:37,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 05:00:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:38,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:00:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:00:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 377 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 05:00:38,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554983755] [2020-10-29 05:00:38,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:00:38,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:00:38,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345665606] [2020-10-29 05:00:38,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:00:38,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:00:38,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:00:38,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:00:38,288 INFO L87 Difference]: Start difference. First operand 52744 states and 71015 transitions. Second operand 8 states. [2020-10-29 05:00:38,832 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:39,528 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:00:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:00:47,988 INFO L93 Difference]: Finished difference Result 201671 states and 307158 transitions. [2020-10-29 05:00:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 05:00:47,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 458 [2020-10-29 05:00:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:00:48,997 INFO L225 Difference]: With dead ends: 201671 [2020-10-29 05:00:48,997 INFO L226 Difference]: Without dead ends: 149831 [2020-10-29 05:00:49,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:00:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149831 states. [2020-10-29 05:00:54,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149831 to 146942. [2020-10-29 05:00:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146942 states. [2020-10-29 05:00:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146942 states to 146942 states and 204338 transitions. [2020-10-29 05:00:55,530 INFO L78 Accepts]: Start accepts. Automaton has 146942 states and 204338 transitions. Word has length 458 [2020-10-29 05:00:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:00:55,531 INFO L481 AbstractCegarLoop]: Abstraction has 146942 states and 204338 transitions. [2020-10-29 05:00:55,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:00:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 146942 states and 204338 transitions. [2020-10-29 05:00:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-29 05:00:56,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:00:56,243 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:00:56,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:00:56,243 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:00:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:00:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2105166357, now seen corresponding path program 1 times [2020-10-29 05:00:56,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:00:56,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581858110] [2020-10-29 05:00:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:00:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:00:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:00:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:01,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:01,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-29 05:01:01,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:01:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-29 05:01:01,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:01,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 05:01:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 05:01:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:01,858 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:01:01,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:01,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:01,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:01,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:02,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:02,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:01:02,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:01:02,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:02,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:02,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 05:01:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:02,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:02,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:02,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 05:01:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:02,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:02,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 05:01:02,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 05:01:02,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:02,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 05:01:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:02,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 05:01:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:02,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:01:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:01:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-29 05:01:02,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581858110] [2020-10-29 05:01:02,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:02,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:01:02,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609767047] [2020-10-29 05:01:02,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:01:02,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:02,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:01:02,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:01:02,935 INFO L87 Difference]: Start difference. First operand 146942 states and 204338 transitions. Second operand 7 states. [2020-10-29 05:01:03,576 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:05,993 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:19,654 INFO L93 Difference]: Finished difference Result 501960 states and 788687 transitions. [2020-10-29 05:01:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:01:19,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-29 05:01:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:23,210 INFO L225 Difference]: With dead ends: 501960 [2020-10-29 05:01:23,211 INFO L226 Difference]: Without dead ends: 355964 [2020-10-29 05:01:23,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:01:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355964 states. [2020-10-29 05:01:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355964 to 348227. [2020-10-29 05:01:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348227 states. [2020-10-29 05:01:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348227 states to 348227 states and 497795 transitions. [2020-10-29 05:01:41,787 INFO L78 Accepts]: Start accepts. Automaton has 348227 states and 497795 transitions. Word has length 461 [2020-10-29 05:01:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:41,788 INFO L481 AbstractCegarLoop]: Abstraction has 348227 states and 497795 transitions. [2020-10-29 05:01:41,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:01:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 348227 states and 497795 transitions. [2020-10-29 05:01:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-29 05:01:43,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:43,856 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:43,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:01:43,856 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1107067656, now seen corresponding path program 1 times [2020-10-29 05:01:43,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:43,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897615105] [2020-10-29 05:01:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:43,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking...