/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:27:19,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:27:19,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:27:19,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:27:19,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:27:19,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:27:19,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:27:19,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:27:19,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:27:19,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:27:19,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:27:19,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:27:19,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:27:19,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:27:19,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:27:19,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:27:19,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:27:19,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:27:19,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:27:19,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:27:19,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:27:19,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:27:19,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:27:19,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:27:19,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:27:19,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:27:19,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:27:19,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:27:19,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:27:19,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:27:19,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:27:19,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:27:19,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:27:19,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:27:19,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:27:19,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:27:19,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:27:19,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:27:19,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:27:19,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:27:19,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:27:19,257 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 [2020-10-28 13:27:19,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:27:19,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:27:19,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:27:19,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:27:19,319 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:27:19,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:27:19,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:27:19,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:27:19,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:27:19,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:27:19,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:27:19,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:27:19,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:27:19,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:27:19,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:27:19,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:27:19,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:27:19,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:27:19,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:27:19,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:27:19,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:27:19,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:27:19,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:27:19,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:27:19,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:27:19,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:27:19,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:27:19,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:27:19,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:27:19,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:27:19,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:27:19,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:27:19,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:27:19,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:27:19,771 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:27:19,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label51.c [2020-10-28 13:27:19,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/825baaa53/2bf51298f878473e835498606010590b/FLAG2eddce720 [2020-10-28 13:27:20,797 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:27:20,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label51.c [2020-10-28 13:27:20,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/825baaa53/2bf51298f878473e835498606010590b/FLAG2eddce720 [2020-10-28 13:27:20,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/825baaa53/2bf51298f878473e835498606010590b [2020-10-28 13:27:20,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:27:20,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:27:20,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:27:20,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:27:20,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:27:20,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:27:20" (1/1) ... [2020-10-28 13:27:20,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f76bfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:20, skipping insertion in model container [2020-10-28 13:27:20,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:27:20" (1/1) ... [2020-10-28 13:27:20,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:27:21,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:27:21,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:27:21,856 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:27:22,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:27:22,115 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:27:22,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22 WrapperNode [2020-10-28 13:27:22,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:27:22,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:27:22,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:27:22,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:27:22,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (1/1) ... [2020-10-28 13:27:22,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (1/1) ... [2020-10-28 13:27:22,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (1/1) ... [2020-10-28 13:27:22,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (1/1) ... [2020-10-28 13:27:22,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (1/1) ... [2020-10-28 13:27:22,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (1/1) ... [2020-10-28 13:27:22,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (1/1) ... [2020-10-28 13:27:22,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:27:22,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:27:22,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:27:22,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:27:22,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (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 [2020-10-28 13:27:22,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:27:22,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:27:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:27:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:27:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:27:22,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:27:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:27:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:27:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:27:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:27:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:27:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:27:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:27:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:27:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:27:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:27:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:27:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:27:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:27:22,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:27:22,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:27:25,213 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:27:25,214 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:27:25,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:27:25 BoogieIcfgContainer [2020-10-28 13:27:25,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:27:25,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:27:25,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:27:25,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:27:25,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:27:20" (1/3) ... [2020-10-28 13:27:25,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161b3798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:27:25, skipping insertion in model container [2020-10-28 13:27:25,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:27:22" (2/3) ... [2020-10-28 13:27:25,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161b3798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:27:25, skipping insertion in model container [2020-10-28 13:27:25,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:27:25" (3/3) ... [2020-10-28 13:27:25,229 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label51.c [2020-10-28 13:27:25,241 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:27:25,247 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:27:25,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:27:25,308 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:27:25,308 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:27:25,308 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:27:25,308 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:27:25,308 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:27:25,309 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:27:25,309 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:27:25,309 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:27:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:27:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 13:27:25,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:25,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:25,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1813812652, now seen corresponding path program 1 times [2020-10-28 13:27:25,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:25,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231718810] [2020-10-28 13:27:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:26,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 13:27:26,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-28 13:27:26,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:26,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:27:26,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:27:26,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:27:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:26,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:26,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:27:26,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:26,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:26,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:27:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:27:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:27:26,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231718810] [2020-10-28 13:27:26,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:27:26,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:27:26,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177223621] [2020-10-28 13:27:26,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:27:26,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:27:26,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:27:26,325 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:27:26,517 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:27:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:31,015 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:27:31,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:27:31,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 13:27:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:31,048 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:27:31,049 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:27:31,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:27:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:27:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:27:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:27:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:27:31,164 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 21 [2020-10-28 13:27:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:31,164 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:27:31,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:27:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:27:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 13:27:31,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:31,170 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:27:31,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:27:31,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:31,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:31,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2026500173, now seen corresponding path program 1 times [2020-10-28 13:27:31,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:31,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814424715] [2020-10-28 13:27:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 13:27:32,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:27:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-10-28 13:27:32,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:27:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:27:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:27:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:32,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:27:32,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:32,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:27:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 13:27:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:27:32,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 13:27:32,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:27:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:27:32,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814424715] [2020-10-28 13:27:32,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:27:32,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:27:32,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382419010] [2020-10-28 13:27:32,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:32,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:32,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:32,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:32,858 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:27:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:37,753 INFO L93 Difference]: Finished difference Result 2081 states and 3078 transitions. [2020-10-28 13:27:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:27:37,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-28 13:27:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:37,765 INFO L225 Difference]: With dead ends: 2081 [2020-10-28 13:27:37,766 INFO L226 Difference]: Without dead ends: 1394 [2020-10-28 13:27:37,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:27:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-28 13:27:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1386. [2020-10-28 13:27:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-28 13:27:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1822 transitions. [2020-10-28 13:27:37,834 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1822 transitions. Word has length 97 [2020-10-28 13:27:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:37,834 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 1822 transitions. [2020-10-28 13:27:37,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1822 transitions. [2020-10-28 13:27:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 13:27:37,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:37,843 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:37,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:27:37,843 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:37,844 INFO L82 PathProgramCache]: Analyzing trace with hash 310425694, now seen corresponding path program 1 times [2020-10-28 13:27:37,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:37,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106234102] [2020-10-28 13:27:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:41,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:41,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-28 13:27:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:27:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3989 [2020-10-28 13:27:41,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:41,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:41,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:27:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:27:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:41,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:41,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:41,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:27:41,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:42,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:42,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:42,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:42,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:27:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:27:42,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:42,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:42,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:27:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:27:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:42,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:27:42,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:27:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:27:42,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:42,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:27:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 80 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:27:42,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106234102] [2020-10-28 13:27:42,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:42,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:27:42,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111704112] [2020-10-28 13:27:42,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:27:42,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:42,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:27:42,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:27:42,359 INFO L87 Difference]: Start difference. First operand 1386 states and 1822 transitions. Second operand 6 states. [2020-10-28 13:27:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:47,088 INFO L93 Difference]: Finished difference Result 3503 states and 4787 transitions. [2020-10-28 13:27:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:27:47,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2020-10-28 13:27:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:47,103 INFO L225 Difference]: With dead ends: 3503 [2020-10-28 13:27:47,103 INFO L226 Difference]: Without dead ends: 2123 [2020-10-28 13:27:47,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:27:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2020-10-28 13:27:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2100. [2020-10-28 13:27:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-28 13:27:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2648 transitions. [2020-10-28 13:27:47,182 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2648 transitions. Word has length 184 [2020-10-28 13:27:47,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:47,183 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2648 transitions. [2020-10-28 13:27:47,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:27:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2648 transitions. [2020-10-28 13:27:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 13:27:47,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:47,188 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:47,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:27:47,188 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:47,189 INFO L82 PathProgramCache]: Analyzing trace with hash -304170656, now seen corresponding path program 1 times [2020-10-28 13:27:47,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:47,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799172297] [2020-10-28 13:27:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 13:27:50,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3470 [2020-10-28 13:27:50,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:27:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:27:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:50,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:50,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:50,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:27:50,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:50,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:27:50,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:27:50,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:50,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:50,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:27:50,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:27:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:51,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:51,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:51,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:51,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:27:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:51,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:27:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:27:51,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799172297] [2020-10-28 13:27:51,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:51,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:51,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666519182] [2020-10-28 13:27:51,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:51,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:51,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:51,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:51,460 INFO L87 Difference]: Start difference. First operand 2100 states and 2648 transitions. Second operand 7 states. [2020-10-28 13:27:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:57,214 INFO L93 Difference]: Finished difference Result 5963 states and 7695 transitions. [2020-10-28 13:27:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:27:57,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-28 13:27:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:57,247 INFO L225 Difference]: With dead ends: 5963 [2020-10-28 13:27:57,247 INFO L226 Difference]: Without dead ends: 3869 [2020-10-28 13:27:57,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:27:57,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2020-10-28 13:27:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 3857. [2020-10-28 13:27:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3857 states. [2020-10-28 13:27:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 4648 transitions. [2020-10-28 13:27:57,368 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 4648 transitions. Word has length 250 [2020-10-28 13:27:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:57,368 INFO L481 AbstractCegarLoop]: Abstraction has 3857 states and 4648 transitions. [2020-10-28 13:27:57,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 4648 transitions. [2020-10-28 13:27:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-28 13:27:57,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:57,374 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:57,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:27:57,375 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:57,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:57,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1760952503, now seen corresponding path program 1 times [2020-10-28 13:27:57,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:57,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451754064] [2020-10-28 13:27:57,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:57,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:02,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:02,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-28 13:28:02,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:28:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 13:28:02,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:02,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:28:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:28:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:28:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:02,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:02,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:02,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:02,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:02,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:02,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:02,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:02,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:02,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:02,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:28:02,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:28:02,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:02,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:02,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:28:02,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:28:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:28:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:02,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:02,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:28:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:28:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 13:28:02,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:02,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:02,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:28:02,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:28:02,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:28:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:28:03,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:28:03,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:03,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:28:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 207 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:28:03,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451754064] [2020-10-28 13:28:03,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:03,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:03,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386545731] [2020-10-28 13:28:03,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:03,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:03,328 INFO L87 Difference]: Start difference. First operand 3857 states and 4648 transitions. Second operand 7 states. [2020-10-28 13:28:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:08,504 INFO L93 Difference]: Finished difference Result 9501 states and 11990 transitions. [2020-10-28 13:28:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:28:08,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-28 13:28:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:08,531 INFO L225 Difference]: With dead ends: 9501 [2020-10-28 13:28:08,531 INFO L226 Difference]: Without dead ends: 4900 [2020-10-28 13:28:08,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2020-10-28 13:28:08,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 4856. [2020-10-28 13:28:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-10-28 13:28:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 5294 transitions. [2020-10-28 13:28:08,668 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 5294 transitions. Word has length 293 [2020-10-28 13:28:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:08,668 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 5294 transitions. [2020-10-28 13:28:08,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 5294 transitions. [2020-10-28 13:28:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-28 13:28:08,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:08,681 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:28:08,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:28:08,681 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1521624368, now seen corresponding path program 1 times [2020-10-28 13:28:08,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:08,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725665620] [2020-10-28 13:28:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:09,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:13,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-28 13:28:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:28:13,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:28:13,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:13,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:28:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:28:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:14,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:14,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:28:14,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:14,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:14,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:14,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:14,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 13:28:14,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:14,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:28:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:14,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:28:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-28 13:28:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:15,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:28:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:28:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:28:15,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725665620] [2020-10-28 13:28:15,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:15,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:15,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338186937] [2020-10-28 13:28:15,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:15,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:15,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:15,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:15,926 INFO L87 Difference]: Start difference. First operand 4856 states and 5294 transitions. Second operand 7 states. [2020-10-28 13:28:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:19,211 INFO L93 Difference]: Finished difference Result 9393 states and 10272 transitions. [2020-10-28 13:28:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:28:19,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-28 13:28:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:19,233 INFO L225 Difference]: With dead ends: 9393 [2020-10-28 13:28:19,233 INFO L226 Difference]: Without dead ends: 4880 [2020-10-28 13:28:19,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2020-10-28 13:28:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4860. [2020-10-28 13:28:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4860 states. [2020-10-28 13:28:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 5296 transitions. [2020-10-28 13:28:19,349 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 5296 transitions. Word has length 517 [2020-10-28 13:28:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:19,351 INFO L481 AbstractCegarLoop]: Abstraction has 4860 states and 5296 transitions. [2020-10-28 13:28:19,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 5296 transitions. [2020-10-28 13:28:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-28 13:28:19,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:19,366 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:28:19,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:28:19,366 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:19,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:19,367 INFO L82 PathProgramCache]: Analyzing trace with hash 726012871, now seen corresponding path program 1 times [2020-10-28 13:28:19,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:19,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081565192] [2020-10-28 13:28:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:19,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:23,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-28 13:28:23,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:28:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3830 [2020-10-28 13:28:23,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:23,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:28:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:28:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:23,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:23,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:23,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:23,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:28:23,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:23,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:23,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:23,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:23,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:28:23,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:23,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:23,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:23,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:23,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:23,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:23,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:28:23,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:23,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:28:23,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:23,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:23,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:23,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:28:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:28:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:24,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:24,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:28:24,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 13:28:24,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:24,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:28:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:28:24,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081565192] [2020-10-28 13:28:24,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:24,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:24,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849019444] [2020-10-28 13:28:24,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:24,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:24,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:24,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:24,696 INFO L87 Difference]: Start difference. First operand 4860 states and 5296 transitions. Second operand 7 states. [2020-10-28 13:28:28,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:28,832 INFO L93 Difference]: Finished difference Result 10767 states and 11937 transitions. [2020-10-28 13:28:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:28:28,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 585 [2020-10-28 13:28:28,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:28,862 INFO L225 Difference]: With dead ends: 10767 [2020-10-28 13:28:28,863 INFO L226 Difference]: Without dead ends: 6250 [2020-10-28 13:28:28,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2020-10-28 13:28:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 6236. [2020-10-28 13:28:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6236 states. [2020-10-28 13:28:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 6761 transitions. [2020-10-28 13:28:29,008 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 6761 transitions. Word has length 585 [2020-10-28 13:28:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:29,009 INFO L481 AbstractCegarLoop]: Abstraction has 6236 states and 6761 transitions. [2020-10-28 13:28:29,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 6761 transitions. [2020-10-28 13:28:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-28 13:28:29,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:29,027 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:29,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:28:29,028 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:29,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:29,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1523272681, now seen corresponding path program 1 times [2020-10-28 13:28:29,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:29,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203612814] [2020-10-28 13:28:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-28 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1062 [2020-10-28 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:30,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:30,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:30,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:30,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:30,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:30,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:28:30,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:30,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:30,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:28:30,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:30,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:30,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:30,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:30,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:28:30,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:28:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:30,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:30,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:28:30,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:30,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:28:30,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:30,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:30,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:28:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:28:31,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203612814] [2020-10-28 13:28:31,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:31,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:31,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901935189] [2020-10-28 13:28:31,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:31,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:31,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:31,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:31,180 INFO L87 Difference]: Start difference. First operand 6236 states and 6761 transitions. Second operand 7 states. [2020-10-28 13:28:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:35,146 INFO L93 Difference]: Finished difference Result 14177 states and 15579 transitions. [2020-10-28 13:28:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:28:35,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 588 [2020-10-28 13:28:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:35,177 INFO L225 Difference]: With dead ends: 14177 [2020-10-28 13:28:35,177 INFO L226 Difference]: Without dead ends: 8284 [2020-10-28 13:28:35,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2020-10-28 13:28:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8272. [2020-10-28 13:28:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8272 states. [2020-10-28 13:28:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8272 states to 8272 states and 8898 transitions. [2020-10-28 13:28:35,362 INFO L78 Accepts]: Start accepts. Automaton has 8272 states and 8898 transitions. Word has length 588 [2020-10-28 13:28:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:35,363 INFO L481 AbstractCegarLoop]: Abstraction has 8272 states and 8898 transitions. [2020-10-28 13:28:35,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 8272 states and 8898 transitions. [2020-10-28 13:28:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-28 13:28:35,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:35,373 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:35,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:28:35,374 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1607961749, now seen corresponding path program 1 times [2020-10-28 13:28:35,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:35,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15937159] [2020-10-28 13:28:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:35,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:37,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:37,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-28 13:28:37,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:28:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2166 [2020-10-28 13:28:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:37,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:28:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:28:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:37,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:37,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:37,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:37,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:28:37,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:37,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:37,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:37,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:37,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:37,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:28:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:37,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:38,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:38,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:38,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:28:38,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:38,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:38,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:38,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:38,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:28:38,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:38,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:28:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 13:28:38,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15937159] [2020-10-28 13:28:38,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:38,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:38,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472262598] [2020-10-28 13:28:38,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:38,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:38,821 INFO L87 Difference]: Start difference. First operand 8272 states and 8898 transitions. Second operand 7 states. [2020-10-28 13:28:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:44,408 INFO L93 Difference]: Finished difference Result 19966 states and 21695 transitions. [2020-10-28 13:28:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:28:44,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 646 [2020-10-28 13:28:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:44,447 INFO L225 Difference]: With dead ends: 19966 [2020-10-28 13:28:44,448 INFO L226 Difference]: Without dead ends: 12037 [2020-10-28 13:28:44,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12037 states. [2020-10-28 13:28:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12037 to 11691. [2020-10-28 13:28:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11691 states. [2020-10-28 13:28:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11691 states to 11691 states and 12578 transitions. [2020-10-28 13:28:44,664 INFO L78 Accepts]: Start accepts. Automaton has 11691 states and 12578 transitions. Word has length 646 [2020-10-28 13:28:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:44,665 INFO L481 AbstractCegarLoop]: Abstraction has 11691 states and 12578 transitions. [2020-10-28 13:28:44,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 11691 states and 12578 transitions. [2020-10-28 13:28:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-28 13:28:44,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:44,674 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:44,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:28:44,675 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:44,676 INFO L82 PathProgramCache]: Analyzing trace with hash 776025553, now seen corresponding path program 1 times [2020-10-28 13:28:44,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:44,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317503728] [2020-10-28 13:28:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:45,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:45,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-28 13:28:45,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-28 13:28:45,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:45,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:28:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 13:28:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:45,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:45,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:45,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:45,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:45,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:45,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:45,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:45,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:45,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:45,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:28:45,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:45,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:28:45,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:45,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:45,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:45,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:45,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:45,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:28:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:45,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:28:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-28 13:28:46,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317503728] [2020-10-28 13:28:46,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:46,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:28:46,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741860962] [2020-10-28 13:28:46,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:28:46,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:46,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:28:46,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:28:46,217 INFO L87 Difference]: Start difference. First operand 11691 states and 12578 transitions. Second operand 5 states. [2020-10-28 13:28:49,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:49,281 INFO L93 Difference]: Finished difference Result 24377 states and 26292 transitions. [2020-10-28 13:28:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:28:49,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 648 [2020-10-28 13:28:49,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:49,318 INFO L225 Difference]: With dead ends: 24377 [2020-10-28 13:28:49,318 INFO L226 Difference]: Without dead ends: 13380 [2020-10-28 13:28:49,335 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 [2020-10-28 13:28:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13380 states. [2020-10-28 13:28:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13380 to 13378. [2020-10-28 13:28:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13378 states. [2020-10-28 13:28:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13378 states to 13378 states and 14342 transitions. [2020-10-28 13:28:49,575 INFO L78 Accepts]: Start accepts. Automaton has 13378 states and 14342 transitions. Word has length 648 [2020-10-28 13:28:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:49,577 INFO L481 AbstractCegarLoop]: Abstraction has 13378 states and 14342 transitions. [2020-10-28 13:28:49,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:28:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13378 states and 14342 transitions. [2020-10-28 13:28:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2020-10-28 13:28:49,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:49,609 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:28:49,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:28:49,609 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1083366440, now seen corresponding path program 1 times [2020-10-28 13:28:49,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:49,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561199787] [2020-10-28 13:28:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:49,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1153 [2020-10-28 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 741 [2020-10-28 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:28:54,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:55,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:28:55,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:55,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:28:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:28:55,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:28:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:28:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:28:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-28 13:28:55,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:55,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:28:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-28 13:28:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:56,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:56,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:28:56,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-28 13:28:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:56,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:56,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:28:56,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:28:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:56,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:28:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 822 proven. 111 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2020-10-28 13:28:57,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561199787] [2020-10-28 13:28:57,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:57,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:57,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234653025] [2020-10-28 13:28:57,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:57,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:57,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:57,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:57,758 INFO L87 Difference]: Start difference. First operand 13378 states and 14342 transitions. Second operand 7 states. [2020-10-28 13:29:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:01,632 INFO L93 Difference]: Finished difference Result 26072 states and 27994 transitions. [2020-10-28 13:29:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:01,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1131 [2020-10-28 13:29:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:01,685 INFO L225 Difference]: With dead ends: 26072 [2020-10-28 13:29:01,685 INFO L226 Difference]: Without dead ends: 13388 [2020-10-28 13:29:01,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:01,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13388 states. [2020-10-28 13:29:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13388 to 13378. [2020-10-28 13:29:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13378 states. [2020-10-28 13:29:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13378 states to 13378 states and 14334 transitions. [2020-10-28 13:29:01,919 INFO L78 Accepts]: Start accepts. Automaton has 13378 states and 14334 transitions. Word has length 1131 [2020-10-28 13:29:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:01,920 INFO L481 AbstractCegarLoop]: Abstraction has 13378 states and 14334 transitions. [2020-10-28 13:29:01,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 13378 states and 14334 transitions. [2020-10-28 13:29:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1178 [2020-10-28 13:29:01,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:01,954 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:01,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:29:01,954 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 745569932, now seen corresponding path program 1 times [2020-10-28 13:29:01,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:01,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791537214] [2020-10-28 13:29:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1199 [2020-10-28 13:29:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-28 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 787 [2020-10-28 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:29:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:29:07,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:29:07,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:29:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:07,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:07,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:29:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:29:07,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:29:07,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:29:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:29:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-28 13:29:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:29:08,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:29:08,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:29:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:08,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-28 13:29:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:08,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:08,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2392 backedges. 868 proven. 111 refuted. 0 times theorem prover too weak. 1413 trivial. 0 not checked. [2020-10-28 13:29:09,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791537214] [2020-10-28 13:29:09,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:09,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:09,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055754482] [2020-10-28 13:29:09,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:09,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:09,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:09,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:09,510 INFO L87 Difference]: Start difference. First operand 13378 states and 14334 transitions. Second operand 7 states. [2020-10-28 13:29:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:14,526 INFO L93 Difference]: Finished difference Result 27079 states and 29042 transitions. [2020-10-28 13:29:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:29:14,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1177 [2020-10-28 13:29:14,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:14,567 INFO L225 Difference]: With dead ends: 27079 [2020-10-28 13:29:14,567 INFO L226 Difference]: Without dead ends: 14395 [2020-10-28 13:29:14,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:29:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14395 states. [2020-10-28 13:29:14,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14395 to 14052. [2020-10-28 13:29:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14052 states. [2020-10-28 13:29:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14052 states to 14052 states and 15017 transitions. [2020-10-28 13:29:14,813 INFO L78 Accepts]: Start accepts. Automaton has 14052 states and 15017 transitions. Word has length 1177 [2020-10-28 13:29:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:14,815 INFO L481 AbstractCegarLoop]: Abstraction has 14052 states and 15017 transitions. [2020-10-28 13:29:14,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 14052 states and 15017 transitions. [2020-10-28 13:29:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2020-10-28 13:29:14,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:14,854 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:14,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:29:14,855 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:14,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:14,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1835635159, now seen corresponding path program 1 times [2020-10-28 13:29:14,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:14,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194383880] [2020-10-28 13:29:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:20,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-10-28 13:29:20,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 13:29:20,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:20,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 733 [2020-10-28 13:29:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:29:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:20,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:20,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:20,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:29:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:20,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:29:20,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:29:20,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:20,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:29:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:20,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:20,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:20,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:29:20,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:20,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:29:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:20,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:29:20,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:20,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:29:20,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:20,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:20,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:29:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:20,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:20,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:20,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:29:20,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:20,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:29:20,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-28 13:29:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:21,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:29:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 13:29:21,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:21,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:29:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:21,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2020-10-28 13:29:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:21,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:29:21,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 13:29:21,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:21,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-28 13:29:21,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:21,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:29:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:21,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:29:21,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:21,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:29:21,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:21,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 831 proven. 249 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2020-10-28 13:29:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194383880] [2020-10-28 13:29:23,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:23,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:23,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063116330] [2020-10-28 13:29:23,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:23,295 INFO L87 Difference]: Start difference. First operand 14052 states and 15017 transitions. Second operand 7 states. [2020-10-28 13:29:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:27,488 INFO L93 Difference]: Finished difference Result 28088 states and 30019 transitions. [2020-10-28 13:29:27,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:29:27,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1287 [2020-10-28 13:29:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:27,521 INFO L225 Difference]: With dead ends: 28088 [2020-10-28 13:29:27,521 INFO L226 Difference]: Without dead ends: 14730 [2020-10-28 13:29:27,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:29:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14730 states. [2020-10-28 13:29:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14730 to 14724. [2020-10-28 13:29:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-28 13:29:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 15659 transitions. [2020-10-28 13:29:27,763 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 15659 transitions. Word has length 1287 [2020-10-28 13:29:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:27,764 INFO L481 AbstractCegarLoop]: Abstraction has 14724 states and 15659 transitions. [2020-10-28 13:29:27,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 15659 transitions. [2020-10-28 13:29:27,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1320 [2020-10-28 13:29:27,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:27,800 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:27,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:29:27,801 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:27,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:27,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1389950471, now seen corresponding path program 1 times [2020-10-28 13:29:27,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:27,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429182431] [2020-10-28 13:29:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:28,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1343 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 787 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 420 [2020-10-28 13:29:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:33,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:33,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:29:33,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:29:33,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:29:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:29:33,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:29:33,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:29:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:29:33,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:29:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:29:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:29:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:29:33,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:29:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-28 13:29:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:34,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:29:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 921 [2020-10-28 13:29:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:34,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:34,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:29:34,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 13:29:34,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:34,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:29:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1194 [2020-10-28 13:29:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:34,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:29:34,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:29:34,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:34,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3227 backedges. 1447 proven. 357 refuted. 0 times theorem prover too weak. 1423 trivial. 0 not checked. [2020-10-28 13:29:36,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429182431] [2020-10-28 13:29:36,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:36,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:29:36,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898042955] [2020-10-28 13:29:36,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:29:36,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:36,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:29:36,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:29:36,879 INFO L87 Difference]: Start difference. First operand 14724 states and 15659 transitions. Second operand 8 states. [2020-10-28 13:29:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:42,408 INFO L93 Difference]: Finished difference Result 29789 states and 31706 transitions. [2020-10-28 13:29:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:29:42,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1319 [2020-10-28 13:29:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:42,445 INFO L225 Difference]: With dead ends: 29789 [2020-10-28 13:29:42,445 INFO L226 Difference]: Without dead ends: 15759 [2020-10-28 13:29:42,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:29:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2020-10-28 13:29:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 15743. [2020-10-28 13:29:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15743 states. [2020-10-28 13:29:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15743 states to 15743 states and 16722 transitions. [2020-10-28 13:29:42,701 INFO L78 Accepts]: Start accepts. Automaton has 15743 states and 16722 transitions. Word has length 1319 [2020-10-28 13:29:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:42,702 INFO L481 AbstractCegarLoop]: Abstraction has 15743 states and 16722 transitions. [2020-10-28 13:29:42,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:29:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 15743 states and 16722 transitions. [2020-10-28 13:29:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1403 [2020-10-28 13:29:42,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:42,745 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:29:42,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:29:42,746 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:42,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1146422146, now seen corresponding path program 1 times [2020-10-28 13:29:42,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:42,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344638187] [2020-10-28 13:29:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:43,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:43,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1428 [2020-10-28 13:29:48,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 13:29:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1016 [2020-10-28 13:29:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:29:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 13:29:48,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:29:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:29:48,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:29:48,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:29:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:29:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:29:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:29:48,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-28 13:29:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:48,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:29:48,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:29:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-28 13:29:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:48,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:29:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-28 13:29:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:29:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1277 [2020-10-28 13:29:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:49,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:49,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:49,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3843 backedges. 1131 proven. 111 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2020-10-28 13:29:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344638187] [2020-10-28 13:29:50,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:50,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:50,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017639895] [2020-10-28 13:29:50,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:50,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:50,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:50,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:50,556 INFO L87 Difference]: Start difference. First operand 15743 states and 16722 transitions. Second operand 7 states. [2020-10-28 13:29:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:54,645 INFO L93 Difference]: Finished difference Result 34185 states and 36595 transitions. [2020-10-28 13:29:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:29:54,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1402 [2020-10-28 13:29:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:54,685 INFO L225 Difference]: With dead ends: 34185 [2020-10-28 13:29:54,686 INFO L226 Difference]: Without dead ends: 19136 [2020-10-28 13:29:54,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19136 states. [2020-10-28 13:29:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19136 to 18795. [2020-10-28 13:29:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18795 states. [2020-10-28 13:29:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18795 states to 18795 states and 20135 transitions. [2020-10-28 13:29:54,989 INFO L78 Accepts]: Start accepts. Automaton has 18795 states and 20135 transitions. Word has length 1402 [2020-10-28 13:29:54,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:54,991 INFO L481 AbstractCegarLoop]: Abstraction has 18795 states and 20135 transitions. [2020-10-28 13:29:54,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 18795 states and 20135 transitions. [2020-10-28 13:29:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2020-10-28 13:29:55,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:55,026 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:55,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:29:55,026 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:55,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1294755892, now seen corresponding path program 1 times [2020-10-28 13:29:55,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:55,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488670601] [2020-10-28 13:29:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:55,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1436 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 616 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:30:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:00,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:00,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:00,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:00,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:30:00,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:30:00,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:00,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:30:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:00,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:00,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:30:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:00,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:00,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:30:00,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:00,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:30:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:00,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:30:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:30:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:01,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:01,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:30:01,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 13:30:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:01,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:30:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 870 [2020-10-28 13:30:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:01,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:01,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:30:01,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:30:01,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:01,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:30:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:01,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:01,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1012 [2020-10-28 13:30:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:01,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:01,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:30:01,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:01,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:30:01,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:01,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:30:01,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:01,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1285 [2020-10-28 13:30:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:30:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:30:01,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:01,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:30:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 755 proven. 509 refuted. 0 times theorem prover too weak. 2441 trivial. 0 not checked. [2020-10-28 13:30:03,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488670601] [2020-10-28 13:30:03,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:03,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:03,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787547229] [2020-10-28 13:30:03,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:03,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:03,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:03,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:03,518 INFO L87 Difference]: Start difference. First operand 18795 states and 20135 transitions. Second operand 7 states. [2020-10-28 13:30:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:07,548 INFO L93 Difference]: Finished difference Result 37915 states and 40620 transitions. [2020-10-28 13:30:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:07,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1410 [2020-10-28 13:30:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:07,590 INFO L225 Difference]: With dead ends: 37915 [2020-10-28 13:30:07,590 INFO L226 Difference]: Without dead ends: 19814 [2020-10-28 13:30:07,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:30:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19814 states. [2020-10-28 13:30:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19814 to 19469. [2020-10-28 13:30:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19469 states. [2020-10-28 13:30:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19469 states to 19469 states and 20822 transitions. [2020-10-28 13:30:07,922 INFO L78 Accepts]: Start accepts. Automaton has 19469 states and 20822 transitions. Word has length 1410 [2020-10-28 13:30:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:07,923 INFO L481 AbstractCegarLoop]: Abstraction has 19469 states and 20822 transitions. [2020-10-28 13:30:07,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 19469 states and 20822 transitions. [2020-10-28 13:30:07,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1437 [2020-10-28 13:30:07,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:07,958 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:07,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:30:07,958 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:07,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1843020710, now seen corresponding path program 1 times [2020-10-28 13:30:07,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:07,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292914153] [2020-10-28 13:30:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:08,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:13,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1462 [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:30:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:13,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:13,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:13,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:30:13,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:13,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:13,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:13,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:13,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:13,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:13,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:30:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:13,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:13,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:30:13,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:13,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:30:13,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:13,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:30:13,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:30:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:30:14,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 13:30:14,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:30:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-28 13:30:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:30:14,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:30:14,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:30:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:14,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 921 [2020-10-28 13:30:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:30:14,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:30:14,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:14,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:30:14,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:14,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1031 [2020-10-28 13:30:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1169 [2020-10-28 13:30:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4166 backedges. 585 proven. 524 refuted. 0 times theorem prover too weak. 3057 trivial. 0 not checked. [2020-10-28 13:30:15,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292914153] [2020-10-28 13:30:15,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:15,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:15,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527633546] [2020-10-28 13:30:15,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:15,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:15,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:15,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:15,703 INFO L87 Difference]: Start difference. First operand 19469 states and 20822 transitions. Second operand 7 states. [2020-10-28 13:30:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:19,473 INFO L93 Difference]: Finished difference Result 39607 states and 42632 transitions. [2020-10-28 13:30:19,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:30:19,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1436 [2020-10-28 13:30:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:19,516 INFO L225 Difference]: With dead ends: 39607 [2020-10-28 13:30:19,516 INFO L226 Difference]: Without dead ends: 20832 [2020-10-28 13:30:19,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20832 states. [2020-10-28 13:30:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20832 to 20824. [2020-10-28 13:30:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20824 states. [2020-10-28 13:30:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20824 states to 20824 states and 22344 transitions. [2020-10-28 13:30:19,819 INFO L78 Accepts]: Start accepts. Automaton has 20824 states and 22344 transitions. Word has length 1436 [2020-10-28 13:30:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:19,820 INFO L481 AbstractCegarLoop]: Abstraction has 20824 states and 22344 transitions. [2020-10-28 13:30:19,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20824 states and 22344 transitions. [2020-10-28 13:30:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1514 [2020-10-28 13:30:19,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:19,856 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 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, 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] [2020-10-28 13:30:19,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:30:19,856 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1314866719, now seen corresponding path program 1 times [2020-10-28 13:30:19,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:19,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48240488] [2020-10-28 13:30:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:20,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:25,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:25,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1541 [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 720 [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-28 13:30:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:25,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:25,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:25,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:25,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:30:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:25,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:25,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:25,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:30:25,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:25,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:25,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:25,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:25,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 13:30:25,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:30:25,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:25,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:25,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:30:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 13:30:25,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:30:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:25,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-10-28 13:30:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:30:26,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2020-10-28 13:30:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:30:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:30:26,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:30:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2020-10-28 13:30:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 998 [2020-10-28 13:30:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:30:26,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:30:26,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:30:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1108 [2020-10-28 13:30:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:30:26,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:30:26,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:30:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1246 [2020-10-28 13:30:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:30:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:30:26,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:30:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4106 backedges. 576 proven. 524 refuted. 0 times theorem prover too weak. 3006 trivial. 0 not checked. [2020-10-28 13:30:28,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48240488] [2020-10-28 13:30:28,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:28,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:28,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097815650] [2020-10-28 13:30:28,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:28,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:28,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:28,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:28,145 INFO L87 Difference]: Start difference. First operand 20824 states and 22344 transitions. Second operand 7 states. [2020-10-28 13:30:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:32,832 INFO L93 Difference]: Finished difference Result 47059 states and 50790 transitions. [2020-10-28 13:30:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:30:32,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1513 [2020-10-28 13:30:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:32,878 INFO L225 Difference]: With dead ends: 47059 [2020-10-28 13:30:32,879 INFO L226 Difference]: Without dead ends: 26929 [2020-10-28 13:30:32,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:30:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26929 states. [2020-10-28 13:30:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26929 to 26251. [2020-10-28 13:30:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26251 states. [2020-10-28 13:30:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26251 states to 26251 states and 28326 transitions. [2020-10-28 13:30:33,245 INFO L78 Accepts]: Start accepts. Automaton has 26251 states and 28326 transitions. Word has length 1513 [2020-10-28 13:30:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:33,246 INFO L481 AbstractCegarLoop]: Abstraction has 26251 states and 28326 transitions. [2020-10-28 13:30:33,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26251 states and 28326 transitions. [2020-10-28 13:30:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1520 [2020-10-28 13:30:33,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:33,282 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:33,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 13:30:33,282 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:33,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:33,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1690008309, now seen corresponding path program 1 times [2020-10-28 13:30:33,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:33,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367045027] [2020-10-28 13:30:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:33,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:38,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:38,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1547 [2020-10-28 13:30:38,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 13:30:38,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:38,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:30:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:30:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:38,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:38,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:38,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:38,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:38,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:38,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:38,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:38,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:30:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:38,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:30:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:30:39,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:30:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:39,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:30:39,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:30:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:30:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:30:39,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:30:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-28 13:30:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-28 13:30:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:30:39,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:30:39,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:30:39,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 816 [2020-10-28 13:30:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-28 13:30:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:30:39,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:30:39,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:30:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-28 13:30:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:30:39,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:39,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 13:30:39,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1252 [2020-10-28 13:30:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:30:39,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:30:39,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:30:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4856 backedges. 304 proven. 927 refuted. 0 times theorem prover too weak. 3625 trivial. 0 not checked. [2020-10-28 13:30:41,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367045027] [2020-10-28 13:30:41,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:41,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:41,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372185521] [2020-10-28 13:30:41,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:41,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:41,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:41,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:41,367 INFO L87 Difference]: Start difference. First operand 26251 states and 28326 transitions. Second operand 7 states. [2020-10-28 13:30:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:45,747 INFO L93 Difference]: Finished difference Result 52153 states and 56307 transitions. [2020-10-28 13:30:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:30:45,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1519 [2020-10-28 13:30:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:45,785 INFO L225 Difference]: With dead ends: 52153 [2020-10-28 13:30:45,785 INFO L226 Difference]: Without dead ends: 26245 [2020-10-28 13:30:45,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26245 states. [2020-10-28 13:30:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26245 to 23882. [2020-10-28 13:30:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23882 states. [2020-10-28 13:30:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23882 states to 23882 states and 25671 transitions. [2020-10-28 13:30:46,077 INFO L78 Accepts]: Start accepts. Automaton has 23882 states and 25671 transitions. Word has length 1519 [2020-10-28 13:30:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:46,078 INFO L481 AbstractCegarLoop]: Abstraction has 23882 states and 25671 transitions. [2020-10-28 13:30:46,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 23882 states and 25671 transitions. [2020-10-28 13:30:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1581 [2020-10-28 13:30:46,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:46,115 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:46,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 13:30:46,115 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:46,116 INFO L82 PathProgramCache]: Analyzing trace with hash 517919577, now seen corresponding path program 1 times [2020-10-28 13:30:46,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:46,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541934957] [2020-10-28 13:30:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1608 [2020-10-28 13:30:51,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:30:51,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1189 [2020-10-28 13:30:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 13:30:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:51,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:51,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:30:51,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:30:51,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:51,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:51,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:51,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:51,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:30:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:51,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:51,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:30:51,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:51,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:51,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:30:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:30:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:51,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:51,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:30:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:30:52,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:30:52,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:52,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2020-10-28 13:30:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:30:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1175 [2020-10-28 13:30:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:30:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1313 [2020-10-28 13:30:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:52,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:52,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5037 backedges. 1028 proven. 137 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-10-28 13:30:53,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541934957] [2020-10-28 13:30:53,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:53,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:53,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562114653] [2020-10-28 13:30:53,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:53,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:53,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:53,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:53,643 INFO L87 Difference]: Start difference. First operand 23882 states and 25671 transitions. Second operand 7 states.