/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=DEEPEST --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/Problem15_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:22:52,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:22:52,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:22:52,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:22:52,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:22:52,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:22:52,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:22:52,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:22:52,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:22:52,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:22:52,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:22:52,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:22:52,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:22:52,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:22:52,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:22:52,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:22:52,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:22:52,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:22:52,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:22:52,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:22:52,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:22:52,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:22:52,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:22:52,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:22:52,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:22:52,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:22:52,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:22:52,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:22:52,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:22:52,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:22:52,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:22:52,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:22:52,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:22:52,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:22:52,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:22:52,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:22:52,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:22:52,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:22:52,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:22:52,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:22:52,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:22:52,205 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 [2020-10-27 18:22:52,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:22:52,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:22:52,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:22:52,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:22:52,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:22:52,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:22:52,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:22:52,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:22:52,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:22:52,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:22:52,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:22:52,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:22:52,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:22:52,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:22:52,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:22:52,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:22:52,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:22:52,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:22:52,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:22:52,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:22:52,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:22:52,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:22:52,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:22:52,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:22:52,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:22:52,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:22:52,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:22:52,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:22:52,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:22:52,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:22:52,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:22:52,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:22:52,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:22:52,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:22:52,714 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:22:52,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-27 18:22:52,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dbfe48a/ceb60863130442918c7e3514b944122e/FLAGe69f52d28 [2020-10-27 18:22:53,898 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:22:53,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-27 18:22:53,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dbfe48a/ceb60863130442918c7e3514b944122e/FLAGe69f52d28 [2020-10-27 18:22:53,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dbfe48a/ceb60863130442918c7e3514b944122e [2020-10-27 18:22:53,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:22:53,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:22:53,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:22:53,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:22:53,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:22:53,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:53" (1/1) ... [2020-10-27 18:22:53,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c096cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:53, skipping insertion in model container [2020-10-27 18:22:53,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:53" (1/1) ... [2020-10-27 18:22:53,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:22:54,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:22:54,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:22:54,889 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:22:55,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:22:55,386 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:22:55,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55 WrapperNode [2020-10-27 18:22:55,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:22:55,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:22:55,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:22:55,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:22:55,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (1/1) ... [2020-10-27 18:22:55,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (1/1) ... [2020-10-27 18:22:55,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (1/1) ... [2020-10-27 18:22:55,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (1/1) ... [2020-10-27 18:22:55,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (1/1) ... [2020-10-27 18:22:55,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (1/1) ... [2020-10-27 18:22:55,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (1/1) ... [2020-10-27 18:22:55,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:22:55,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:22:55,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:22:55,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:22:55,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (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 [2020-10-27 18:22:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:22:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:22:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:22:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:22:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:22:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:22:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:22:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:22:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:22:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:22:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:22:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:22:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:22:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:22:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:22:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:22:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:22:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:22:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:22:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:22:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:22:59,330 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:22:59,331 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:22:59,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:59 BoogieIcfgContainer [2020-10-27 18:22:59,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:22:59,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:22:59,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:22:59,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:22:59,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:22:53" (1/3) ... [2020-10-27 18:22:59,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dd20b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:22:59, skipping insertion in model container [2020-10-27 18:22:59,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:55" (2/3) ... [2020-10-27 18:22:59,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dd20b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:22:59, skipping insertion in model container [2020-10-27 18:22:59,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:59" (3/3) ... [2020-10-27 18:22:59,349 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label14.c [2020-10-27 18:22:59,365 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:22:59,373 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:22:59,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:22:59,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:22:59,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:22:59,434 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:22:59,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:22:59,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:22:59,435 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:22:59,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:22:59,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:22:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-27 18:22:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 18:22:59,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:22:59,482 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] [2020-10-27 18:22:59,482 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:22:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:22:59,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1871102583, now seen corresponding path program 1 times [2020-10-27 18:22:59,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:22:59,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339222466] [2020-10-27 18:22:59,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:22:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:22:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:00,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:00,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 18:23:00,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-27 18:23:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:23:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:23:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 18:23:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:23:00,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:00,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:00,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:00,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:00,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:23:00,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:23:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:23:00,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339222466] [2020-10-27 18:23:00,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:23:00,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:23:00,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114075408] [2020-10-27 18:23:00,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:23:00,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:23:00,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:23:00,710 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-27 18:23:07,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:07,053 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-27 18:23:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:23:07,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-27 18:23:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:07,104 INFO L225 Difference]: With dead ends: 1208 [2020-10-27 18:23:07,105 INFO L226 Difference]: Without dead ends: 703 [2020-10-27 18:23:07,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:23:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-27 18:23:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-27 18:23:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-27 18:23:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-27 18:23:07,304 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 22 [2020-10-27 18:23:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:07,306 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-27 18:23:07,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:23:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-27 18:23:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 18:23:07,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:07,316 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:23:07,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:23:07,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:07,319 INFO L82 PathProgramCache]: Analyzing trace with hash 137838371, now seen corresponding path program 1 times [2020-10-27 18:23:07,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:07,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898320187] [2020-10-27 18:23:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:23:08,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:23:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-27 18:23:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 18:23:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:23:08,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:23:08,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:09,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:09,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:09,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:09,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:23:09,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:23:09,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:23:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 18:23:09,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:23:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:23:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:23:09,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898320187] [2020-10-27 18:23:09,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:09,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:23:09,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877584318] [2020-10-27 18:23:09,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:23:09,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:23:09,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:23:09,317 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 5 states. [2020-10-27 18:23:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:18,955 INFO L93 Difference]: Finished difference Result 2020 states and 2974 transitions. [2020-10-27 18:23:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:23:18,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 18:23:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:18,967 INFO L225 Difference]: With dead ends: 2020 [2020-10-27 18:23:18,968 INFO L226 Difference]: Without dead ends: 1329 [2020-10-27 18:23:18,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:23:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-27 18:23:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1325. [2020-10-27 18:23:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-10-27 18:23:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1880 transitions. [2020-10-27 18:23:19,049 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1880 transitions. Word has length 101 [2020-10-27 18:23:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:19,052 INFO L481 AbstractCegarLoop]: Abstraction has 1325 states and 1880 transitions. [2020-10-27 18:23:19,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:23:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1880 transitions. [2020-10-27 18:23:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 18:23:19,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:19,070 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:23:19,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:23:19,070 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:19,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1756753115, now seen corresponding path program 1 times [2020-10-27 18:23:19,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:19,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422903338] [2020-10-27 18:23:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:20,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:20,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:23:20,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:23:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-10-27 18:23:20,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:20,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 18:23:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:23:20,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:20,575 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:23:20,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:20,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:20,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:20,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:23:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:20,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:20,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:20,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:23:20,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 18:23:20,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:23:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:23:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:23:20,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422903338] [2020-10-27 18:23:20,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:20,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:23:20,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860743583] [2020-10-27 18:23:20,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:23:20,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:20,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:23:20,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:23:20,939 INFO L87 Difference]: Start difference. First operand 1325 states and 1880 transitions. Second operand 6 states. [2020-10-27 18:23:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:32,807 INFO L93 Difference]: Finished difference Result 3894 states and 5936 transitions. [2020-10-27 18:23:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:23:32,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-27 18:23:32,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:32,830 INFO L225 Difference]: With dead ends: 3894 [2020-10-27 18:23:32,831 INFO L226 Difference]: Without dead ends: 2575 [2020-10-27 18:23:32,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:23:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2020-10-27 18:23:32,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2571. [2020-10-27 18:23:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2571 states. [2020-10-27 18:23:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3620 transitions. [2020-10-27 18:23:32,940 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3620 transitions. Word has length 105 [2020-10-27 18:23:32,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:32,941 INFO L481 AbstractCegarLoop]: Abstraction has 2571 states and 3620 transitions. [2020-10-27 18:23:32,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:23:32,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3620 transitions. [2020-10-27 18:23:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 18:23:32,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:32,945 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 18:23:32,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:23:32,946 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:32,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1187094209, now seen corresponding path program 1 times [2020-10-27 18:23:32,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:32,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081879336] [2020-10-27 18:23:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:33,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:34,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:34,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 18:23:34,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:23:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1195 [2020-10-27 18:23:34,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-27 18:23:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:23:34,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:34,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:23:34,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:34,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:34,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:34,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:34,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:23:34,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 18:23:34,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:23:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:23:34,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081879336] [2020-10-27 18:23:34,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:34,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:23:34,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093029449] [2020-10-27 18:23:34,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:23:34,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:23:34,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:23:34,709 INFO L87 Difference]: Start difference. First operand 2571 states and 3620 transitions. Second operand 5 states. [2020-10-27 18:23:43,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:43,428 INFO L93 Difference]: Finished difference Result 6380 states and 9117 transitions. [2020-10-27 18:23:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:23:43,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-27 18:23:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:43,453 INFO L225 Difference]: With dead ends: 6380 [2020-10-27 18:23:43,453 INFO L226 Difference]: Without dead ends: 3815 [2020-10-27 18:23:43,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:23:43,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2020-10-27 18:23:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 3809. [2020-10-27 18:23:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3809 states. [2020-10-27 18:23:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 5034 transitions. [2020-10-27 18:23:43,578 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 5034 transitions. Word has length 138 [2020-10-27 18:23:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:43,579 INFO L481 AbstractCegarLoop]: Abstraction has 3809 states and 5034 transitions. [2020-10-27 18:23:43,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:23:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 5034 transitions. [2020-10-27 18:23:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 18:23:43,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:43,584 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:23:43,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:23:43,584 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:43,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1860920540, now seen corresponding path program 1 times [2020-10-27 18:23:43,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:43,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281976710] [2020-10-27 18:23:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:43,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:45,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:48,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:48,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 18:23:48,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:23:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 18:23:48,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:23:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-27 18:23:48,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 18:23:48,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:23:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:48,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:23:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:23:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:23:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:48,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:48,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:23:48,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:23:48,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:23:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:23:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 18:23:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:23:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:23:48,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:23:48,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:23:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 18:23:48,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:23:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:23:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:23:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 18:23:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:23:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-27 18:23:49,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281976710] [2020-10-27 18:23:49,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:23:49,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:23:49,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812116397] [2020-10-27 18:23:49,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:23:49,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:23:49,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:23:49,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:23:49,110 INFO L87 Difference]: Start difference. First operand 3809 states and 5034 transitions. Second operand 5 states. [2020-10-27 18:23:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:23:59,589 INFO L93 Difference]: Finished difference Result 10092 states and 13804 transitions. [2020-10-27 18:23:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:23:59,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-27 18:23:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:23:59,631 INFO L225 Difference]: With dead ends: 10092 [2020-10-27 18:23:59,631 INFO L226 Difference]: Without dead ends: 6289 [2020-10-27 18:23:59,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:23:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2020-10-27 18:23:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 6285. [2020-10-27 18:23:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6285 states. [2020-10-27 18:23:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 8119 transitions. [2020-10-27 18:23:59,830 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 8119 transitions. Word has length 200 [2020-10-27 18:23:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:23:59,831 INFO L481 AbstractCegarLoop]: Abstraction has 6285 states and 8119 transitions. [2020-10-27 18:23:59,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:23:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 8119 transitions. [2020-10-27 18:23:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-27 18:23:59,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:23:59,842 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 18:23:59,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:23:59,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:23:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:23:59,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1089571674, now seen corresponding path program 1 times [2020-10-27 18:23:59,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:23:59,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43951401] [2020-10-27 18:23:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:23:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:23:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 18:24:04,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:24:04,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 18:24:04,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-27 18:24:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:24:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:05,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:05,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:24:05,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:05,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:05,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:24:05,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:05,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:24:05,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:05,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:24:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:24:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:05,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:05,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 18:24:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:24:05,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:24:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:05,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:05,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:05,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 18:24:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 18:24:05,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 18:24:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-27 18:24:05,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43951401] [2020-10-27 18:24:05,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:05,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:24:05,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276495918] [2020-10-27 18:24:05,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:24:05,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:05,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:24:05,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:24:05,502 INFO L87 Difference]: Start difference. First operand 6285 states and 8119 transitions. Second operand 5 states. [2020-10-27 18:24:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:17,064 INFO L93 Difference]: Finished difference Result 16614 states and 22167 transitions. [2020-10-27 18:24:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:24:17,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-27 18:24:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:17,137 INFO L225 Difference]: With dead ends: 16614 [2020-10-27 18:24:17,138 INFO L226 Difference]: Without dead ends: 10335 [2020-10-27 18:24:17,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:24:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10335 states. [2020-10-27 18:24:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10335 to 10322. [2020-10-27 18:24:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10322 states. [2020-10-27 18:24:17,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10322 states to 10322 states and 13152 transitions. [2020-10-27 18:24:17,567 INFO L78 Accepts]: Start accepts. Automaton has 10322 states and 13152 transitions. Word has length 283 [2020-10-27 18:24:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:17,568 INFO L481 AbstractCegarLoop]: Abstraction has 10322 states and 13152 transitions. [2020-10-27 18:24:17,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:24:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 10322 states and 13152 transitions. [2020-10-27 18:24:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-27 18:24:17,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:17,584 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:24:17,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:24:17,584 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1446393582, now seen corresponding path program 1 times [2020-10-27 18:24:17,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:17,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994397757] [2020-10-27 18:24:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:17,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:20,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:21,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:22,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:22,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 18:24:22,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:24:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 18:24:22,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-10-27 18:24:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 18:24:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:22,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:24:22,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:22,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:23,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:23,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 18:24:23,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:24:23,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-27 18:24:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:23,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:23,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 18:24:23,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 18:24:23,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 18:24:23,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-27 18:24:23,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994397757] [2020-10-27 18:24:23,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:23,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:24:23,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681136968] [2020-10-27 18:24:23,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:24:23,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:23,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:24:23,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:24:23,375 INFO L87 Difference]: Start difference. First operand 10322 states and 13152 transitions. Second operand 5 states. [2020-10-27 18:24:23,552 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 18:24:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:34,224 INFO L93 Difference]: Finished difference Result 24997 states and 32445 transitions. [2020-10-27 18:24:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:24:34,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-27 18:24:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:34,282 INFO L225 Difference]: With dead ends: 24997 [2020-10-27 18:24:34,282 INFO L226 Difference]: Without dead ends: 14681 [2020-10-27 18:24:34,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:24:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14681 states. [2020-10-27 18:24:34,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14681 to 14663. [2020-10-27 18:24:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14663 states. [2020-10-27 18:24:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14663 states to 14663 states and 18663 transitions. [2020-10-27 18:24:34,742 INFO L78 Accepts]: Start accepts. Automaton has 14663 states and 18663 transitions. Word has length 296 [2020-10-27 18:24:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:34,743 INFO L481 AbstractCegarLoop]: Abstraction has 14663 states and 18663 transitions. [2020-10-27 18:24:34,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:24:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 14663 states and 18663 transitions. [2020-10-27 18:24:34,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-27 18:24:34,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:34,760 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 18:24:34,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:24:34,761 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:34,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1486339274, now seen corresponding path program 1 times [2020-10-27 18:24:34,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:34,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145194408] [2020-10-27 18:24:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:34,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:39,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:39,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 18:24:39,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:24:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-27 18:24:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-27 18:24:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:24:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:40,080 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:24:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:24:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:40,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:40,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:24:40,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:40,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:24:40,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:40,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:24:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:40,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:40,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:24:40,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:40,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:24:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:40,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:24:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:40,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:40,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 18:24:40,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:40,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:24:40,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:24:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:24:40,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:24:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:40,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:40,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:24:40,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:24:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 18:24:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:24:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:24:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:24:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:24:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-27 18:24:40,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145194408] [2020-10-27 18:24:40,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:24:40,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:24:40,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673709222] [2020-10-27 18:24:40,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:24:40,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:24:40,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:24:40,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:24:40,601 INFO L87 Difference]: Start difference. First operand 14663 states and 18663 transitions. Second operand 5 states. [2020-10-27 18:24:40,774 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 18:24:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:24:54,116 INFO L93 Difference]: Finished difference Result 32114 states and 41596 transitions. [2020-10-27 18:24:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:24:54,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-27 18:24:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:24:54,195 INFO L225 Difference]: With dead ends: 32114 [2020-10-27 18:24:54,195 INFO L226 Difference]: Without dead ends: 17457 [2020-10-27 18:24:54,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:24:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17457 states. [2020-10-27 18:24:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17457 to 17451. [2020-10-27 18:24:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17451 states. [2020-10-27 18:24:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17451 states to 17451 states and 22493 transitions. [2020-10-27 18:24:54,712 INFO L78 Accepts]: Start accepts. Automaton has 17451 states and 22493 transitions. Word has length 300 [2020-10-27 18:24:54,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:24:54,713 INFO L481 AbstractCegarLoop]: Abstraction has 17451 states and 22493 transitions. [2020-10-27 18:24:54,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:24:54,713 INFO L276 IsEmpty]: Start isEmpty. Operand 17451 states and 22493 transitions. [2020-10-27 18:24:54,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 18:24:54,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:24:54,731 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:24:54,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:24:54,732 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:24:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:24:54,733 INFO L82 PathProgramCache]: Analyzing trace with hash -2048689595, now seen corresponding path program 1 times [2020-10-27 18:24:54,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:24:54,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146641379] [2020-10-27 18:24:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:24:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:24:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:24:59,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:24:59,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 18:24:59,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:24:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 18:24:59,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:24:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:24:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-27 18:24:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:24:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:00,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:00,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:00,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:00,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:25:00,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:00,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:00,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:25:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:25:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:00,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:25:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:00,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:00,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-27 18:25:00,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 18:25:00,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:00,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-27 18:25:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:25:00,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146641379] [2020-10-27 18:25:00,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:00,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:25:00,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389833173] [2020-10-27 18:25:00,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:25:00,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:00,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:25:00,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:25:00,588 INFO L87 Difference]: Start difference. First operand 17451 states and 22493 transitions. Second operand 5 states. [2020-10-27 18:25:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:14,459 INFO L93 Difference]: Finished difference Result 39852 states and 52559 transitions. [2020-10-27 18:25:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:25:14,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 18:25:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:14,575 INFO L225 Difference]: With dead ends: 39852 [2020-10-27 18:25:14,576 INFO L226 Difference]: Without dead ends: 22407 [2020-10-27 18:25:14,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:25:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22407 states. [2020-10-27 18:25:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22407 to 22096. [2020-10-27 18:25:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22096 states. [2020-10-27 18:25:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22096 states to 22096 states and 28956 transitions. [2020-10-27 18:25:15,472 INFO L78 Accepts]: Start accepts. Automaton has 22096 states and 28956 transitions. Word has length 311 [2020-10-27 18:25:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:15,473 INFO L481 AbstractCegarLoop]: Abstraction has 22096 states and 28956 transitions. [2020-10-27 18:25:15,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:25:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 22096 states and 28956 transitions. [2020-10-27 18:25:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-27 18:25:15,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:15,515 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 18:25:15,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:25:15,515 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:15,516 INFO L82 PathProgramCache]: Analyzing trace with hash -355946854, now seen corresponding path program 1 times [2020-10-27 18:25:15,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:15,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72203628] [2020-10-27 18:25:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:15,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:16,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:19,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:20,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:20,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-27 18:25:20,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:25:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 18:25:20,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 18:25:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-27 18:25:20,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:20,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:20,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:20,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:20,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:25:20,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:20,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:20,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:20,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:20,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:25:20,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:25:20,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:25:20,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:25:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:20,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:20,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 18:25:20,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 18:25:20,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:20,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:25:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-27 18:25:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:21,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:21,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:25:21,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:21,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-27 18:25:21,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:21,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:21,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:25:21,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 18:25:21,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-27 18:25:21,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72203628] [2020-10-27 18:25:21,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:21,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:25:21,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764922009] [2020-10-27 18:25:21,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:25:21,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:21,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:25:21,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:25:21,894 INFO L87 Difference]: Start difference. First operand 22096 states and 28956 transitions. Second operand 7 states. [2020-10-27 18:25:23,787 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:25:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:34,262 INFO L93 Difference]: Finished difference Result 45515 states and 60794 transitions. [2020-10-27 18:25:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:25:34,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-27 18:25:34,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:34,360 INFO L225 Difference]: With dead ends: 45515 [2020-10-27 18:25:34,360 INFO L226 Difference]: Without dead ends: 23425 [2020-10-27 18:25:34,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:25:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2020-10-27 18:25:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 22803. [2020-10-27 18:25:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22803 states. [2020-10-27 18:25:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22803 states to 22803 states and 30124 transitions. [2020-10-27 18:25:34,983 INFO L78 Accepts]: Start accepts. Automaton has 22803 states and 30124 transitions. Word has length 380 [2020-10-27 18:25:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:34,984 INFO L481 AbstractCegarLoop]: Abstraction has 22803 states and 30124 transitions. [2020-10-27 18:25:34,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:25:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 22803 states and 30124 transitions. [2020-10-27 18:25:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-27 18:25:35,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:35,022 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 18:25:35,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:25:35,022 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:35,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:35,023 INFO L82 PathProgramCache]: Analyzing trace with hash -939429559, now seen corresponding path program 1 times [2020-10-27 18:25:35,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:35,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443460080] [2020-10-27 18:25:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:40,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-27 18:25:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:25:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 18:25:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-27 18:25:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 18:25:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:40,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:40,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:40,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:40,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:25:40,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:40,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:40,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:25:40,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:25:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:40,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 18:25:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:40,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:40,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:25:40,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:25:40,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:40,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 18:25:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:40,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 18:25:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:41,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:41,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:25:41,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:25:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-27 18:25:41,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:25:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 18:25:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 18:25:41,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443460080] [2020-10-27 18:25:41,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:41,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:25:41,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482330830] [2020-10-27 18:25:41,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:25:41,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:41,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:25:41,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:25:41,940 INFO L87 Difference]: Start difference. First operand 22803 states and 30124 transitions. Second operand 6 states. [2020-10-27 18:25:42,277 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 18:25:44,291 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 18:25:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:25:54,394 INFO L93 Difference]: Finished difference Result 45653 states and 60388 transitions. [2020-10-27 18:25:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:25:54,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 400 [2020-10-27 18:25:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:25:54,486 INFO L225 Difference]: With dead ends: 45653 [2020-10-27 18:25:54,486 INFO L226 Difference]: Without dead ends: 22831 [2020-10-27 18:25:54,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:25:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22831 states. [2020-10-27 18:25:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22831 to 22803. [2020-10-27 18:25:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22803 states. [2020-10-27 18:25:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22803 states to 22803 states and 30094 transitions. [2020-10-27 18:25:55,099 INFO L78 Accepts]: Start accepts. Automaton has 22803 states and 30094 transitions. Word has length 400 [2020-10-27 18:25:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:25:55,100 INFO L481 AbstractCegarLoop]: Abstraction has 22803 states and 30094 transitions. [2020-10-27 18:25:55,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:25:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 22803 states and 30094 transitions. [2020-10-27 18:25:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-27 18:25:55,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:25:55,131 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:25:55,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:25:55,131 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:25:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:25:55,132 INFO L82 PathProgramCache]: Analyzing trace with hash -172581483, now seen corresponding path program 1 times [2020-10-27 18:25:55,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:25:55,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306440569] [2020-10-27 18:25:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:25:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:58,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:58,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-27 18:25:58,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:25:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3278 [2020-10-27 18:25:58,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-27 18:25:58,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-27 18:25:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:25:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:58,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:58,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:25:58,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:25:58,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:25:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:25:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:58,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:25:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:58,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:58,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 18:25:58,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 18:25:58,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:25:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:25:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:25:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-27 18:25:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:25:59,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:25:59,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 18:25:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:25:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:25:59,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306440569] [2020-10-27 18:25:59,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:25:59,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:25:59,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557648222] [2020-10-27 18:25:59,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:25:59,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:25:59,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:25:59,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:25:59,711 INFO L87 Difference]: Start difference. First operand 22803 states and 30094 transitions. Second operand 8 states. [2020-10-27 18:26:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:26:14,775 INFO L93 Difference]: Finished difference Result 45048 states and 60048 transitions. [2020-10-27 18:26:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:26:14,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 402 [2020-10-27 18:26:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:26:14,856 INFO L225 Difference]: With dead ends: 45048 [2020-10-27 18:26:14,856 INFO L226 Difference]: Without dead ends: 22251 [2020-10-27 18:26:14,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:26:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22251 states. [2020-10-27 18:26:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22251 to 18218. [2020-10-27 18:26:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18218 states. [2020-10-27 18:26:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18218 states to 18218 states and 21968 transitions. [2020-10-27 18:26:15,409 INFO L78 Accepts]: Start accepts. Automaton has 18218 states and 21968 transitions. Word has length 402 [2020-10-27 18:26:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:26:15,410 INFO L481 AbstractCegarLoop]: Abstraction has 18218 states and 21968 transitions. [2020-10-27 18:26:15,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:26:15,411 INFO L276 IsEmpty]: Start isEmpty. Operand 18218 states and 21968 transitions. [2020-10-27 18:26:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-27 18:26:15,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:26:15,438 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:26:15,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:26:15,439 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:26:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:26:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1228951367, now seen corresponding path program 1 times [2020-10-27 18:26:15,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:26:15,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567977350] [2020-10-27 18:26:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:26:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:18,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3385 [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 18:26:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:26:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:19,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:19,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:26:19,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:26:19,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:19,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:26:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:19,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:19,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:19,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 18:26:19,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 18:26:19,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:26:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:26:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 18:26:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:19,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-27 18:26:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:19,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:19,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:26:19,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:19,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-27 18:26:19,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:19,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:26:19,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:26:19,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 18:26:19,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:20,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 18:26:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:26:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:26:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:26:20,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:26:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:26:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 18:26:20,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:26:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:26:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 18:26:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:26:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:26:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 187 proven. 143 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-27 18:26:20,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567977350] [2020-10-27 18:26:20,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:26:20,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:26:20,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105124376] [2020-10-27 18:26:20,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:26:20,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:26:20,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:26:20,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:26:20,467 INFO L87 Difference]: Start difference. First operand 18218 states and 21968 transitions. Second operand 8 states. [2020-10-27 18:26:22,113 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 18:26:24,443 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:26:27,455 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 70