/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:28:06,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:28:06,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:28:06,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:28:06,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:28:06,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:28:06,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:28:06,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:28:06,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:28:06,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:28:06,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:28:06,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:28:06,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:28:06,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:28:06,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:28:06,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:28:06,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:28:06,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:28:06,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:28:06,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:28:06,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:28:06,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:28:06,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:28:06,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:28:06,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:28:06,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:28:06,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:28:06,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:28:06,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:28:06,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:28:06,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:28:06,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:28:06,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:28:06,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:28:06,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:28:06,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:28:06,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:28:06,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:28:06,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:28:06,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:28:06,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:28:06,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:28:06,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:28:06,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:28:06,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:28:06,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:28:06,415 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:28:06,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:28:06,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:28:06,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:28:06,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:28:06,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:28:06,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:28:06,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:28:06,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:28:06,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:28:06,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:28:06,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:28:06,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:28:06,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:28:06,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:28:06,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:28:06,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:28:06,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:28:06,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:28:06,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:28:06,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:28:06,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:28:06,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:28:06,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:28:06,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:28:06,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:28:06,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:28:06,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:28:06,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:28:06,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:28:06,938 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:28:06,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-27 00:28:07,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d851f8027/b8b504fbc25847a481f936a26055e25d/FLAGa5bc06cce [2020-10-27 00:28:08,044 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:28:08,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2020-10-27 00:28:08,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d851f8027/b8b504fbc25847a481f936a26055e25d/FLAGa5bc06cce [2020-10-27 00:28:08,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d851f8027/b8b504fbc25847a481f936a26055e25d [2020-10-27 00:28:08,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:28:08,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:28:08,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:08,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:28:08,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:28:08,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:08" (1/1) ... [2020-10-27 00:28:08,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f402a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:08, skipping insertion in model container [2020-10-27 00:28:08,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:08" (1/1) ... [2020-10-27 00:28:08,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:28:08,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:28:10,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:10,051 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:28:10,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:10,652 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:28:10,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10 WrapperNode [2020-10-27 00:28:10,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:10,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:28:10,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:28:10,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:28:10,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... [2020-10-27 00:28:10,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... [2020-10-27 00:28:10,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... [2020-10-27 00:28:10,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... [2020-10-27 00:28:10,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... [2020-10-27 00:28:10,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... [2020-10-27 00:28:10,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... [2020-10-27 00:28:10,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:28:10,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:28:10,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:28:10,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:28:10,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:28:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:28:11,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:28:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:28:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:28:11,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:28:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:28:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:28:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:28:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:28:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:28:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:28:11,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:28:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:28:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:28:11,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:28:11,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:28:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:28:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:28:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:28:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:28:11,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:28:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:28:11,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:28:15,306 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:28:15,307 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:28:15,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:15 BoogieIcfgContainer [2020-10-27 00:28:15,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:28:15,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:28:15,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:28:15,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:28:15,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:28:08" (1/3) ... [2020-10-27 00:28:15,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26886419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:15, skipping insertion in model container [2020-10-27 00:28:15,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:10" (2/3) ... [2020-10-27 00:28:15,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26886419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:15, skipping insertion in model container [2020-10-27 00:28:15,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:15" (3/3) ... [2020-10-27 00:28:15,323 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label24.c [2020-10-27 00:28:15,366 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:28:15,374 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:28:15,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:28:15,432 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:28:15,433 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:28:15,433 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:28:15,433 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:28:15,433 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:28:15,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:28:15,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:28:15,434 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:28:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:28:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 00:28:15,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:15,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:15,482 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:15,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:15,489 INFO L82 PathProgramCache]: Analyzing trace with hash 463481712, now seen corresponding path program 1 times [2020-10-27 00:28:15,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:15,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839527065] [2020-10-27 00:28:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:16,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:16,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 00:28:16,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-27 00:28:16,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 00:28:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:28:16,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:16,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:16,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:16,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:16,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:28:16,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:28:16,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839527065] [2020-10-27 00:28:16,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:16,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:28:16,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231798914] [2020-10-27 00:28:16,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:28:16,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:16,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:28:16,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:28:16,713 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:28:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:25,934 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-27 00:28:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:28:25,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-27 00:28:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:25,969 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:28:25,969 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:28:25,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:28:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:28:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-27 00:28:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-27 00:28:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-27 00:28:26,149 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 58 [2020-10-27 00:28:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:26,152 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-27 00:28:26,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:28:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-27 00:28:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 00:28:26,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:26,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:28:26,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:28:26,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:26,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:26,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1587550226, now seen corresponding path program 1 times [2020-10-27 00:28:26,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:26,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590379932] [2020-10-27 00:28:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:28:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-27 00:28:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:28:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:28:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:28:27,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:27,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:28:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:27,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:27,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:28:27,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:27,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:28:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:28:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:28:27,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590379932] [2020-10-27 00:28:27,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:27,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:28:27,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718930509] [2020-10-27 00:28:27,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:27,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:27,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:27,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:27,895 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 7 states. [2020-10-27 00:28:44,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:44,298 INFO L93 Difference]: Finished difference Result 4365 states and 7125 transitions. [2020-10-27 00:28:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:28:44,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-27 00:28:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:44,320 INFO L225 Difference]: With dead ends: 4365 [2020-10-27 00:28:44,320 INFO L226 Difference]: Without dead ends: 2942 [2020-10-27 00:28:44,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:28:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-10-27 00:28:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2878. [2020-10-27 00:28:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2020-10-27 00:28:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 3959 transitions. [2020-10-27 00:28:44,436 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 3959 transitions. Word has length 127 [2020-10-27 00:28:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:44,436 INFO L481 AbstractCegarLoop]: Abstraction has 2878 states and 3959 transitions. [2020-10-27 00:28:44,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 3959 transitions. [2020-10-27 00:28:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 00:28:44,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:44,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:44,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:28:44,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1450107316, now seen corresponding path program 1 times [2020-10-27 00:28:44,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:44,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490208485] [2020-10-27 00:28:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 00:28:45,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-27 00:28:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 00:28:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:45,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:45,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:45,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:45,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:28:45,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:45,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:45,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:45,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:28:45,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:28:45,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:28:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:28:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:28:45,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490208485] [2020-10-27 00:28:45,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:45,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:28:45,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894264765] [2020-10-27 00:28:45,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:45,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:45,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:45,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:45,890 INFO L87 Difference]: Start difference. First operand 2878 states and 3959 transitions. Second operand 7 states. [2020-10-27 00:29:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:01,177 INFO L93 Difference]: Finished difference Result 8818 states and 12649 transitions. [2020-10-27 00:29:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:29:01,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-27 00:29:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:01,219 INFO L225 Difference]: With dead ends: 8818 [2020-10-27 00:29:01,220 INFO L226 Difference]: Without dead ends: 5946 [2020-10-27 00:29:01,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:29:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2020-10-27 00:29:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 5822. [2020-10-27 00:29:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5822 states. [2020-10-27 00:29:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5822 states to 5822 states and 7388 transitions. [2020-10-27 00:29:01,489 INFO L78 Accepts]: Start accepts. Automaton has 5822 states and 7388 transitions. Word has length 130 [2020-10-27 00:29:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:01,490 INFO L481 AbstractCegarLoop]: Abstraction has 5822 states and 7388 transitions. [2020-10-27 00:29:01,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5822 states and 7388 transitions. [2020-10-27 00:29:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 00:29:01,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:01,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:01,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:29:01,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:01,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:01,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1145811280, now seen corresponding path program 1 times [2020-10-27 00:29:01,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:01,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972080514] [2020-10-27 00:29:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:01,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 00:29:02,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:02,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-27 00:29:02,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:29:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 00:29:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:02,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:29:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:02,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:29:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:29:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:29:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:02,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972080514] [2020-10-27 00:29:02,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:02,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:29:02,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760294746] [2020-10-27 00:29:02,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:02,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:02,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:02,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:02,968 INFO L87 Difference]: Start difference. First operand 5822 states and 7388 transitions. Second operand 7 states. [2020-10-27 00:29:18,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:18,807 INFO L93 Difference]: Finished difference Result 17012 states and 22171 transitions. [2020-10-27 00:29:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:18,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-27 00:29:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:18,901 INFO L225 Difference]: With dead ends: 17012 [2020-10-27 00:29:18,901 INFO L226 Difference]: Without dead ends: 11196 [2020-10-27 00:29:18,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2020-10-27 00:29:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 10367. [2020-10-27 00:29:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10367 states. [2020-10-27 00:29:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10367 states to 10367 states and 12673 transitions. [2020-10-27 00:29:19,218 INFO L78 Accepts]: Start accepts. Automaton has 10367 states and 12673 transitions. Word has length 148 [2020-10-27 00:29:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:19,219 INFO L481 AbstractCegarLoop]: Abstraction has 10367 states and 12673 transitions. [2020-10-27 00:29:19,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 10367 states and 12673 transitions. [2020-10-27 00:29:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-27 00:29:19,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:19,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:19,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:29:19,225 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash 522802118, now seen corresponding path program 1 times [2020-10-27 00:29:19,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:19,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043940618] [2020-10-27 00:29:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:22,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:22,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-27 00:29:22,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:29:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2891 [2020-10-27 00:29:22,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:29:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:22,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:22,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:22,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:29:22,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 00:29:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:29:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:22,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:22,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:29:22,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:29:22,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:29:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:29:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 100 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:29:23,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043940618] [2020-10-27 00:29:23,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:23,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:23,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969796086] [2020-10-27 00:29:23,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:23,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:23,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:23,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:23,062 INFO L87 Difference]: Start difference. First operand 10367 states and 12673 transitions. Second operand 7 states. [2020-10-27 00:29:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:35,434 INFO L93 Difference]: Finished difference Result 22346 states and 27120 transitions. [2020-10-27 00:29:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:29:35,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-27 00:29:35,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:35,478 INFO L225 Difference]: With dead ends: 22346 [2020-10-27 00:29:35,479 INFO L226 Difference]: Without dead ends: 11985 [2020-10-27 00:29:35,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:29:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11985 states. [2020-10-27 00:29:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11985 to 11813. [2020-10-27 00:29:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11813 states. [2020-10-27 00:29:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11813 states to 11813 states and 14139 transitions. [2020-10-27 00:29:35,889 INFO L78 Accepts]: Start accepts. Automaton has 11813 states and 14139 transitions. Word has length 253 [2020-10-27 00:29:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:35,890 INFO L481 AbstractCegarLoop]: Abstraction has 11813 states and 14139 transitions. [2020-10-27 00:29:35,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 11813 states and 14139 transitions. [2020-10-27 00:29:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-27 00:29:35,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:35,902 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:35,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:29:35,902 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2080335526, now seen corresponding path program 1 times [2020-10-27 00:29:35,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:35,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653685583] [2020-10-27 00:29:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:40,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-27 00:29:40,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:29:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 00:29:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:29:40,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:29:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:41,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:41,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:41,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:29:41,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:41,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:41,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:41,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:29:41,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 00:29:41,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:29:41,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:29:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:41,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:41,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:41,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 00:29:41,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:29:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:29:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:42,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:29:42,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:29:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:29:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 273 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 00:29:42,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653685583] [2020-10-27 00:29:42,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:42,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:29:42,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104166210] [2020-10-27 00:29:42,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:29:42,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:29:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:29:42,422 INFO L87 Difference]: Start difference. First operand 11813 states and 14139 transitions. Second operand 8 states. [2020-10-27 00:30:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:06,270 INFO L93 Difference]: Finished difference Result 30188 states and 38450 transitions. [2020-10-27 00:30:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 00:30:06,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 439 [2020-10-27 00:30:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:06,331 INFO L225 Difference]: With dead ends: 30188 [2020-10-27 00:30:06,331 INFO L226 Difference]: Without dead ends: 18223 [2020-10-27 00:30:06,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:30:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18223 states. [2020-10-27 00:30:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18223 to 16699. [2020-10-27 00:30:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16699 states. [2020-10-27 00:30:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16699 states to 16699 states and 18429 transitions. [2020-10-27 00:30:06,724 INFO L78 Accepts]: Start accepts. Automaton has 16699 states and 18429 transitions. Word has length 439 [2020-10-27 00:30:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:06,725 INFO L481 AbstractCegarLoop]: Abstraction has 16699 states and 18429 transitions. [2020-10-27 00:30:06,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:30:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 16699 states and 18429 transitions. [2020-10-27 00:30:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-27 00:30:06,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:06,766 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:06,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:30:06,767 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:06,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:06,767 INFO L82 PathProgramCache]: Analyzing trace with hash 405887426, now seen corresponding path program 1 times [2020-10-27 00:30:06,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:06,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629756572] [2020-10-27 00:30:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1004 [2020-10-27 00:30:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-27 00:30:12,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:30:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:30:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:12,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:12,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:12,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:30:12,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:12,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:12,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:12,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:12,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 00:30:12,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:12,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 00:30:12,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:13,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:13,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:13,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:30:13,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:13,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:30:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:13,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:13,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:13,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:13,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 00:30:13,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:30:13,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:13,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:13,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:13,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:30:13,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:13,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:30:13,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:13,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:13,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:14,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:14,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:14,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 00:30:14,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:30:14,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:30:14,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629756572] [2020-10-27 00:30:14,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:14,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:14,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293723355] [2020-10-27 00:30:14,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:14,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:14,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:14,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:14,645 INFO L87 Difference]: Start difference. First operand 16699 states and 18429 transitions. Second operand 7 states. [2020-10-27 00:30:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:27,648 INFO L93 Difference]: Finished difference Result 36454 states and 41319 transitions. [2020-10-27 00:30:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:27,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 982 [2020-10-27 00:30:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:27,712 INFO L225 Difference]: With dead ends: 36454 [2020-10-27 00:30:27,712 INFO L226 Difference]: Without dead ends: 21173 [2020-10-27 00:30:27,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21173 states. [2020-10-27 00:30:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21173 to 21094. [2020-10-27 00:30:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21094 states. [2020-10-27 00:30:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21094 states to 21094 states and 23591 transitions. [2020-10-27 00:30:28,289 INFO L78 Accepts]: Start accepts. Automaton has 21094 states and 23591 transitions. Word has length 982 [2020-10-27 00:30:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:28,292 INFO L481 AbstractCegarLoop]: Abstraction has 21094 states and 23591 transitions. [2020-10-27 00:30:28,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 21094 states and 23591 transitions. [2020-10-27 00:30:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-27 00:30:28,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:28,338 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:28,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:30:28,339 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:28,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:28,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1371426180, now seen corresponding path program 1 times [2020-10-27 00:30:28,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:28,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770788509] [2020-10-27 00:30:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:33,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:33,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-27 00:30:33,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4610 [2020-10-27 00:30:33,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:30:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:30:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:33,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:33,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:33,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:30:33,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:33,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:33,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:30:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:33,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:30:33,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:33,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:33,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:33,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:33,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:30:33,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:33,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:34,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:34,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:34,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:34,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-27 00:30:34,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:34,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:34,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:34,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:30:34,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:34,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:34,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:34,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:30:34,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:30:34,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:34,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:30:34,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 00:30:34,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:34,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:30:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:30:35,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770788509] [2020-10-27 00:30:35,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:35,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:35,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887938363] [2020-10-27 00:30:35,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:35,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:35,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:35,459 INFO L87 Difference]: Start difference. First operand 21094 states and 23591 transitions. Second operand 7 states. [2020-10-27 00:30:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:52,862 INFO L93 Difference]: Finished difference Result 44495 states and 50079 transitions. [2020-10-27 00:30:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:52,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-27 00:30:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:52,921 INFO L225 Difference]: With dead ends: 44495 [2020-10-27 00:30:52,921 INFO L226 Difference]: Without dead ends: 24819 [2020-10-27 00:30:52,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:52,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24819 states. [2020-10-27 00:30:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24819 to 24725. [2020-10-27 00:30:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24725 states. [2020-10-27 00:30:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24725 states to 24725 states and 27490 transitions. [2020-10-27 00:30:53,371 INFO L78 Accepts]: Start accepts. Automaton has 24725 states and 27490 transitions. Word has length 989 [2020-10-27 00:30:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:53,373 INFO L481 AbstractCegarLoop]: Abstraction has 24725 states and 27490 transitions. [2020-10-27 00:30:53,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 24725 states and 27490 transitions. [2020-10-27 00:30:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-27 00:30:53,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:53,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:53,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:30:53,391 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1958442366, now seen corresponding path program 1 times [2020-10-27 00:30:53,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:53,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481393364] [2020-10-27 00:30:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:58,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1082 [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:30:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:58,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:58,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:58,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:30:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:58,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:59,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:59,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:59,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:30:59,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:59,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:59,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:59,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:59,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:30:59,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:59,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:59,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:59,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:30:59,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:30:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:59,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:59,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:59,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:30:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:30:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:00,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:31:00,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:31:00,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:31:00,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:00,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:31:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:00,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:00,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:31:00,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:31:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:31:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 362 proven. 75 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2020-10-27 00:31:00,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481393364] [2020-10-27 00:31:00,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:00,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:00,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468243804] [2020-10-27 00:31:00,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:00,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:00,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:00,980 INFO L87 Difference]: Start difference. First operand 24725 states and 27490 transitions. Second operand 7 states. [2020-10-27 00:31:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:14,458 INFO L93 Difference]: Finished difference Result 61726 states and 70098 transitions. [2020-10-27 00:31:14,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:31:14,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2020-10-27 00:31:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:14,567 INFO L225 Difference]: With dead ends: 61726 [2020-10-27 00:31:14,567 INFO L226 Difference]: Without dead ends: 38419 [2020-10-27 00:31:14,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:31:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38419 states. [2020-10-27 00:31:15,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38419 to 38320. [2020-10-27 00:31:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38320 states. [2020-10-27 00:31:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38320 states to 38320 states and 42465 transitions. [2020-10-27 00:31:15,375 INFO L78 Accepts]: Start accepts. Automaton has 38320 states and 42465 transitions. Word has length 1058 [2020-10-27 00:31:15,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:15,377 INFO L481 AbstractCegarLoop]: Abstraction has 38320 states and 42465 transitions. [2020-10-27 00:31:15,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 38320 states and 42465 transitions. [2020-10-27 00:31:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-27 00:31:15,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:15,398 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:15,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:31:15,398 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:15,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1728898616, now seen corresponding path program 1 times [2020-10-27 00:31:15,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:15,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132904469] [2020-10-27 00:31:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:20,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-27 00:31:20,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4799 [2020-10-27 00:31:20,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:31:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:31:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:20,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:20,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:20,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:31:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:20,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:20,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:20,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:20,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:31:20,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:20,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:21,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 00:31:21,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:21,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:21,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:21,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:21,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:21,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:21,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:31:21,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:21,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:31:21,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:31:21,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:31:21,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:31:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:21,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:31:21,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:31:21,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:31:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 471 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:31:22,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132904469] [2020-10-27 00:31:22,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:22,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:22,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030893836] [2020-10-27 00:31:22,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:22,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:22,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:22,457 INFO L87 Difference]: Start difference. First operand 38320 states and 42465 transitions. Second operand 7 states. [2020-10-27 00:31:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:37,802 INFO L93 Difference]: Finished difference Result 86093 states and 97080 transitions. [2020-10-27 00:31:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:31:37,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1125 [2020-10-27 00:31:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:37,958 INFO L225 Difference]: With dead ends: 86093 [2020-10-27 00:31:37,958 INFO L226 Difference]: Without dead ends: 49191 [2020-10-27 00:31:38,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49191 states. [2020-10-27 00:31:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49191 to 49115. [2020-10-27 00:31:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49115 states. [2020-10-27 00:31:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49115 states to 49115 states and 54516 transitions. [2020-10-27 00:31:39,146 INFO L78 Accepts]: Start accepts. Automaton has 49115 states and 54516 transitions. Word has length 1125 [2020-10-27 00:31:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:39,147 INFO L481 AbstractCegarLoop]: Abstraction has 49115 states and 54516 transitions. [2020-10-27 00:31:39,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 49115 states and 54516 transitions. [2020-10-27 00:31:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-10-27 00:31:39,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:39,164 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:39,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:31:39,165 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash -154428738, now seen corresponding path program 1 times [2020-10-27 00:31:39,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:39,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969589502] [2020-10-27 00:31:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:43,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:43,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1156 [2020-10-27 00:31:43,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3990 [2020-10-27 00:31:43,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:31:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:31:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:43,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:43,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:43,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:43,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:43,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:43,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:43,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:43,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:31:43,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:43,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:43,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:43,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:31:43,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:43,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:44,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:31:44,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:31:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:31:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:31:44,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 00:31:44,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:31:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0