/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/Problem15_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:42:24,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:42:24,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:42:24,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:42:24,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:42:24,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:42:24,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:42:24,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:42:24,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:42:24,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:42:24,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:42:24,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:42:24,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:42:24,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:42:24,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:42:24,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:42:24,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:42:24,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:42:24,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:42:24,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:42:24,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:42:24,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:42:24,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:42:24,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:42:24,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:42:24,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:42:24,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:42:24,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:42:24,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:42:24,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:42:24,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:42:24,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:42:24,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:42:24,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:42:24,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:42:24,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:42:24,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:42:24,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:42:24,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:42:24,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:42:24,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:42:24,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:42:24,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:42:24,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:42:24,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:42:24,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:42:24,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:42:24,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:42:24,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:42:24,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:42:24,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:42:24,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:42:24,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:42:24,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:42:24,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:42:24,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:42:24,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:42:24,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:42:24,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:42:24,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:42:24,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:42:24,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:42:24,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:42:24,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:42:24,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:42:24,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:42:24,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:42:24,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:42:24,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:42:24,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:42:24,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:42:24,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:42:25,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:42:25,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:42:25,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:42:25,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:42:25,116 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:42:25,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label32.c [2020-10-26 23:42:25,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce00980bc/8f62366321644bd18d787097ec3d7141/FLAG621acadc5 [2020-10-26 23:42:26,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:42:26,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label32.c [2020-10-26 23:42:26,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce00980bc/8f62366321644bd18d787097ec3d7141/FLAG621acadc5 [2020-10-26 23:42:26,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce00980bc/8f62366321644bd18d787097ec3d7141 [2020-10-26 23:42:26,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:42:26,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:42:26,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:42:26,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:42:26,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:42:26,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:42:26" (1/1) ... [2020-10-26 23:42:26,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:26, skipping insertion in model container [2020-10-26 23:42:26,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:42:26" (1/1) ... [2020-10-26 23:42:26,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:42:26,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:42:27,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:42:27,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:42:27,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:42:27,798 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:42:27,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27 WrapperNode [2020-10-26 23:42:27,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:42:27,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:42:27,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:42:27,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:42:27,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... [2020-10-26 23:42:27,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... [2020-10-26 23:42:27,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... [2020-10-26 23:42:27,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... [2020-10-26 23:42:27,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... [2020-10-26 23:42:28,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... [2020-10-26 23:42:28,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... [2020-10-26 23:42:28,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:42:28,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:42:28,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:42:28,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:42:28,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:42:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:42:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:42:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:42:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:42:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:42:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:42:28,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:42:28,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:42:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:42:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:42:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:42:28,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:42:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:42:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:42:32,394 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:42:32,395 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:42:32,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:32 BoogieIcfgContainer [2020-10-26 23:42:32,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:42:32,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:42:32,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:42:32,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:42:32,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:42:26" (1/3) ... [2020-10-26 23:42:32,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e853ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:32, skipping insertion in model container [2020-10-26 23:42:32,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:27" (2/3) ... [2020-10-26 23:42:32,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e853ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:32, skipping insertion in model container [2020-10-26 23:42:32,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:32" (3/3) ... [2020-10-26 23:42:32,411 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label32.c [2020-10-26 23:42:32,428 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:42:32,435 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:42:32,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:42:32,499 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:42:32,499 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:42:32,499 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:42:32,500 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:42:32,500 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:42:32,500 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:42:32,500 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:42:32,500 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:42:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:42:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-26 23:42:32,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:32,556 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] [2020-10-26 23:42:32,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:32,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1958412241, now seen corresponding path program 1 times [2020-10-26 23:42:32,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:32,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495803484] [2020-10-26 23:42:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:33,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:33,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-26 23:42:33,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-26 23:42:33,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-26 23:42:33,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:42:33,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:33,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:33,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:33,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:42:33,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:33,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:33,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495803484] [2020-10-26 23:42:33,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:33,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:42:33,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415603766] [2020-10-26 23:42:33,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:42:33,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:33,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:42:33,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:42:33,826 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:42:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:42,586 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-26 23:42:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:42:42,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-26 23:42:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:42,610 INFO L225 Difference]: With dead ends: 1204 [2020-10-26 23:42:42,610 INFO L226 Difference]: Without dead ends: 698 [2020-10-26 23:42:42,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:42:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-26 23:42:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-26 23:42:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-26 23:42:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-26 23:42:42,731 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 56 [2020-10-26 23:42:42,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:42,733 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-26 23:42:42,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:42:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-26 23:42:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-26 23:42:42,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:42,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:42,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:42:42,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:42,741 INFO L82 PathProgramCache]: Analyzing trace with hash -777758714, now seen corresponding path program 1 times [2020-10-26 23:42:42,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:42,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093911510] [2020-10-26 23:42:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:43,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:46,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:46,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 23:42:46,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3610 [2020-10-26 23:42:46,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:42:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:46,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:46,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:46,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:46,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:42:46,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:42:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:46,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:46,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:42:46,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:42:46,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:42:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:46,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093911510] [2020-10-26 23:42:46,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:46,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:42:46,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579991122] [2020-10-26 23:42:46,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:46,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:46,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:46,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:46,985 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-26 23:42:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:55,399 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-26 23:42:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:42:55,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-26 23:42:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:55,407 INFO L225 Difference]: With dead ends: 1712 [2020-10-26 23:42:55,407 INFO L226 Difference]: Without dead ends: 1026 [2020-10-26 23:42:55,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:42:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-26 23:42:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-26 23:42:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-26 23:42:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-26 23:42:55,481 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 125 [2020-10-26 23:42:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:55,482 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-26 23:42:55,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:42:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-26 23:42:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-26 23:42:55,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:55,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:55,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:42:55,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:55,487 INFO L82 PathProgramCache]: Analyzing trace with hash -696671230, now seen corresponding path program 1 times [2020-10-26 23:42:55,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:55,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283726352] [2020-10-26 23:42:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:56,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:56,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-26 23:42:56,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:56,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-10-26 23:42:56,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:42:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:57,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:57,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:57,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:42:57,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:57,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:57,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:57,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:57,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:42:57,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:42:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:42:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:57,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283726352] [2020-10-26 23:42:57,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:57,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:42:57,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472563553] [2020-10-26 23:42:57,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:57,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:57,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:57,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:57,279 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-26 23:43:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:08,227 INFO L93 Difference]: Finished difference Result 2395 states and 3404 transitions. [2020-10-26 23:43:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:43:08,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-26 23:43:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:08,243 INFO L225 Difference]: With dead ends: 2395 [2020-10-26 23:43:08,243 INFO L226 Difference]: Without dead ends: 1693 [2020-10-26 23:43:08,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:43:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-10-26 23:43:08,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1347. [2020-10-26 23:43:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-10-26 23:43:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1744 transitions. [2020-10-26 23:43:08,318 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1744 transitions. Word has length 130 [2020-10-26 23:43:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:08,321 INFO L481 AbstractCegarLoop]: Abstraction has 1347 states and 1744 transitions. [2020-10-26 23:43:08,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1744 transitions. [2020-10-26 23:43:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 23:43:08,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:08,332 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:43:08,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:43:08,333 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:08,339 INFO L82 PathProgramCache]: Analyzing trace with hash -422052648, now seen corresponding path program 1 times [2020-10-26 23:43:08,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:08,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135708911] [2020-10-26 23:43:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:13,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:13,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-26 23:43:13,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:43:13,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:43:13,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:43:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:43:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:13,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:13,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:13,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:43:13,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:13,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:13,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:13,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:13,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:43:13,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 23:43:13,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:43:13,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:13,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:43:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:14,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:14,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:43:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:43:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:43:14,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135708911] [2020-10-26 23:43:14,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:14,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:43:14,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586988005] [2020-10-26 23:43:14,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:14,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:14,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:14,287 INFO L87 Difference]: Start difference. First operand 1347 states and 1744 transitions. Second operand 7 states. [2020-10-26 23:43:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:24,302 INFO L93 Difference]: Finished difference Result 3738 states and 4965 transitions. [2020-10-26 23:43:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:43:24,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-26 23:43:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:24,319 INFO L225 Difference]: With dead ends: 3738 [2020-10-26 23:43:24,320 INFO L226 Difference]: Without dead ends: 2397 [2020-10-26 23:43:24,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:43:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2020-10-26 23:43:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2293. [2020-10-26 23:43:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2293 states. [2020-10-26 23:43:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 2822 transitions. [2020-10-26 23:43:24,420 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 2822 transitions. Word has length 230 [2020-10-26 23:43:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:24,422 INFO L481 AbstractCegarLoop]: Abstraction has 2293 states and 2822 transitions. [2020-10-26 23:43:24,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 2822 transitions. [2020-10-26 23:43:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-26 23:43:24,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:24,430 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:43:24,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:43:24,430 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1531203852, now seen corresponding path program 1 times [2020-10-26 23:43:24,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:24,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130136641] [2020-10-26 23:43:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:25,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:29,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-26 23:43:29,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:43:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-26 23:43:29,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:43:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:43:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:29,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:29,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:29,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:29,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:43:29,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:29,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:29,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:30,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:30,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:30,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:30,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-26 23:43:30,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:30,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:43:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:30,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:30,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:43:30,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:43:30,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:43:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:43:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:43:30,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 96 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:43:30,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130136641] [2020-10-26 23:43:30,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:30,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:43:30,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829642472] [2020-10-26 23:43:30,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:30,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:30,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:30,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:30,814 INFO L87 Difference]: Start difference. First operand 2293 states and 2822 transitions. Second operand 7 states. [2020-10-26 23:43:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:42,297 INFO L93 Difference]: Finished difference Result 4964 states and 6056 transitions. [2020-10-26 23:43:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:43:42,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-26 23:43:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:42,323 INFO L225 Difference]: With dead ends: 4964 [2020-10-26 23:43:42,323 INFO L226 Difference]: Without dead ends: 2677 [2020-10-26 23:43:42,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:43:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2020-10-26 23:43:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2604. [2020-10-26 23:43:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-10-26 23:43:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3145 transitions. [2020-10-26 23:43:42,422 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3145 transitions. Word has length 336 [2020-10-26 23:43:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:42,423 INFO L481 AbstractCegarLoop]: Abstraction has 2604 states and 3145 transitions. [2020-10-26 23:43:42,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3145 transitions. [2020-10-26 23:43:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-26 23:43:42,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:42,432 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:43:42,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:43:42,433 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:42,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:42,433 INFO L82 PathProgramCache]: Analyzing trace with hash 246035354, now seen corresponding path program 1 times [2020-10-26 23:43:42,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:42,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753838010] [2020-10-26 23:43:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:42,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:47,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:47,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-26 23:43:47,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:43:47,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:43:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:43:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 356 [2020-10-26 23:43:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:47,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:47,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:47,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:47,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:43:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:47,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:47,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:43:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:48,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:43:48,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-26 23:43:48,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:43:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:43:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:49,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:49,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:49,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-26 23:43:49,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:43:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:49,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:49,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:49,561 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 23:43:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:43:50,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753838010] [2020-10-26 23:43:50,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:50,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:43:50,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251233822] [2020-10-26 23:43:50,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:43:50,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:50,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:43:50,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:43:50,637 INFO L87 Difference]: Start difference. First operand 2604 states and 3145 transitions. Second operand 12 states. [2020-10-26 23:43:50,934 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2020-10-26 23:43:52,454 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-10-26 23:43:53,124 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-10-26 23:43:53,416 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-10-26 23:43:54,572 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-10-26 23:43:56,548 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-26 23:43:56,858 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-26 23:43:58,121 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-26 23:43:58,581 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-10-26 23:43:58,929 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-10-26 23:44:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:10,234 INFO L93 Difference]: Finished difference Result 3597 states and 4586 transitions. [2020-10-26 23:44:10,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-26 23:44:10,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 351 [2020-10-26 23:44:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:10,258 INFO L225 Difference]: With dead ends: 3597 [2020-10-26 23:44:10,258 INFO L226 Difference]: Without dead ends: 3594 [2020-10-26 23:44:10,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-10-26 23:44:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2020-10-26 23:44:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3241. [2020-10-26 23:44:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2020-10-26 23:44:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4108 transitions. [2020-10-26 23:44:10,392 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4108 transitions. Word has length 351 [2020-10-26 23:44:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:10,395 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 4108 transitions. [2020-10-26 23:44:10,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:44:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4108 transitions. [2020-10-26 23:44:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-26 23:44:10,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:10,408 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:10,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:44:10,409 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1125853296, now seen corresponding path program 1 times [2020-10-26 23:44:10,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:10,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581775395] [2020-10-26 23:44:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:15,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-26 23:44:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:44:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:44:15,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:44:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:44:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:44:15,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:15,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:15,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:15,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:15,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:44:15,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:15,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:15,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:15,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:15,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:44:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:16,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:44:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-26 23:44:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:44:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:16,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:44:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:16,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:44:16,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:16,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:44:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:44:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-26 23:44:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:16,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:16,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:16,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:44:16,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:16,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 225 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:44:16,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581775395] [2020-10-26 23:44:16,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:16,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:16,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469744425] [2020-10-26 23:44:16,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:16,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:16,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:16,840 INFO L87 Difference]: Start difference. First operand 3241 states and 4108 transitions. Second operand 7 states. [2020-10-26 23:44:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:30,947 INFO L93 Difference]: Finished difference Result 8449 states and 11105 transitions. [2020-10-26 23:44:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:30,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 486 [2020-10-26 23:44:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:30,986 INFO L225 Difference]: With dead ends: 8449 [2020-10-26 23:44:30,986 INFO L226 Difference]: Without dead ends: 5521 [2020-10-26 23:44:30,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2020-10-26 23:44:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 4842. [2020-10-26 23:44:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2020-10-26 23:44:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 6075 transitions. [2020-10-26 23:44:31,167 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 6075 transitions. Word has length 486 [2020-10-26 23:44:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:31,168 INFO L481 AbstractCegarLoop]: Abstraction has 4842 states and 6075 transitions. [2020-10-26 23:44:31,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 6075 transitions. [2020-10-26 23:44:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-26 23:44:31,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:31,184 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, 4, 4, 4, 4, 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, 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] [2020-10-26 23:44:31,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:44:31,184 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:31,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1817802604, now seen corresponding path program 1 times [2020-10-26 23:44:31,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:31,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359722113] [2020-10-26 23:44:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:33,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:36,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:36,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-26 23:44:36,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:44:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-26 23:44:36,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:44:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:44:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-26 23:44:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:36,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:36,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:36,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:44:36,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:44:36,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:44:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:36,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:44:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:44:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:44:37,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:44:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-26 23:44:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:44:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:37,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:44:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:37,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:37,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:44:37,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:37,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:37,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:44:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:44:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:37,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:37,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:37,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:37,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:44:37,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:37,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 369 proven. 150 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-26 23:44:38,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359722113] [2020-10-26 23:44:38,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:38,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:38,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888231952] [2020-10-26 23:44:38,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:38,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:38,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:38,046 INFO L87 Difference]: Start difference. First operand 4842 states and 6075 transitions. Second operand 7 states. [2020-10-26 23:44:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:55,302 INFO L93 Difference]: Finished difference Result 11954 states and 15280 transitions. [2020-10-26 23:44:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:55,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-26 23:44:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:55,340 INFO L225 Difference]: With dead ends: 11954 [2020-10-26 23:44:55,341 INFO L226 Difference]: Without dead ends: 6453 [2020-10-26 23:44:55,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2020-10-26 23:44:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 5805. [2020-10-26 23:44:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5805 states. [2020-10-26 23:44:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 6895 transitions. [2020-10-26 23:44:55,634 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 6895 transitions. Word has length 507 [2020-10-26 23:44:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:55,635 INFO L481 AbstractCegarLoop]: Abstraction has 5805 states and 6895 transitions. [2020-10-26 23:44:55,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 6895 transitions. [2020-10-26 23:44:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-26 23:44:55,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:55,653 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:55,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:44:55,653 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:55,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1112709475, now seen corresponding path program 1 times [2020-10-26 23:44:55,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:55,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336992810] [2020-10-26 23:44:55,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:45:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:01,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:45:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:45:01,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 23:45:01,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:01,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:45:01,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:45:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:01,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:45:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:45:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:01,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:45:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:01,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:01,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:01,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:45:01,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:45:01,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:45:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:45:02,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336992810] [2020-10-26 23:45:02,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:02,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:02,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031870327] [2020-10-26 23:45:02,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:02,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:02,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:02,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:02,152 INFO L87 Difference]: Start difference. First operand 5805 states and 6895 transitions. Second operand 7 states. [2020-10-26 23:45:06,308 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:45:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:13,544 INFO L93 Difference]: Finished difference Result 12619 states and 15072 transitions. [2020-10-26 23:45:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:45:13,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-26 23:45:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:13,580 INFO L225 Difference]: With dead ends: 12619 [2020-10-26 23:45:13,580 INFO L226 Difference]: Without dead ends: 7127 [2020-10-26 23:45:13,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7127 states. [2020-10-26 23:45:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7127 to 6764. [2020-10-26 23:45:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6764 states. [2020-10-26 23:45:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6764 states to 6764 states and 7824 transitions. [2020-10-26 23:45:13,785 INFO L78 Accepts]: Start accepts. Automaton has 6764 states and 7824 transitions. Word has length 517 [2020-10-26 23:45:13,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:13,786 INFO L481 AbstractCegarLoop]: Abstraction has 6764 states and 7824 transitions. [2020-10-26 23:45:13,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6764 states and 7824 transitions. [2020-10-26 23:45:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-26 23:45:13,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:13,796 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:13,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:45:13,796 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1450575851, now seen corresponding path program 1 times [2020-10-26 23:45:13,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:13,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424294190] [2020-10-26 23:45:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:14,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:16,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2940 [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:45:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:17,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:17,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:45:17,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:17,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:17,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:45:17,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:17,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:17,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:45:17,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:17,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:17,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:45:17,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:45:17,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:45:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:17,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424294190] [2020-10-26 23:45:17,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:17,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:17,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471683955] [2020-10-26 23:45:17,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:17,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:17,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:17,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:17,691 INFO L87 Difference]: Start difference. First operand 6764 states and 7824 transitions. Second operand 7 states. [2020-10-26 23:45:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:29,668 INFO L93 Difference]: Finished difference Result 14492 states and 17394 transitions. [2020-10-26 23:45:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:45:29,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 529 [2020-10-26 23:45:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:29,704 INFO L225 Difference]: With dead ends: 14492 [2020-10-26 23:45:29,704 INFO L226 Difference]: Without dead ends: 8041 [2020-10-26 23:45:29,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8041 states. [2020-10-26 23:45:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8041 to 7062. [2020-10-26 23:45:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7062 states. [2020-10-26 23:45:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 8554 transitions. [2020-10-26 23:45:29,939 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 8554 transitions. Word has length 529 [2020-10-26 23:45:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:29,941 INFO L481 AbstractCegarLoop]: Abstraction has 7062 states and 8554 transitions. [2020-10-26 23:45:29,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 8554 transitions. [2020-10-26 23:45:29,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-26 23:45:29,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:29,953 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:29,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:45:29,954 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:29,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:29,955 INFO L82 PathProgramCache]: Analyzing trace with hash -908394043, now seen corresponding path program 1 times [2020-10-26 23:45:29,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:29,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786907809] [2020-10-26 23:45:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:30,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:30,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:31,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:31,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-26 23:45:31,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-26 23:45:31,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:45:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:31,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:31,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:31,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:31,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:45:31,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:31,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:32,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:45:32,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:32,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:32,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:32,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:32,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:45:32,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:45:32,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 23:45:32,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:45:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:32,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786907809] [2020-10-26 23:45:32,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:32,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:32,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106488003] [2020-10-26 23:45:32,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:32,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:32,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:32,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:32,741 INFO L87 Difference]: Start difference. First operand 7062 states and 8554 transitions. Second operand 7 states. [2020-10-26 23:45:32,903 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:45:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:45,381 INFO L93 Difference]: Finished difference Result 15743 states and 19612 transitions. [2020-10-26 23:45:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:45:45,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 552 [2020-10-26 23:45:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:45,420 INFO L225 Difference]: With dead ends: 15743 [2020-10-26 23:45:45,420 INFO L226 Difference]: Without dead ends: 8994 [2020-10-26 23:45:45,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8994 states. [2020-10-26 23:45:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8994 to 8645. [2020-10-26 23:45:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8645 states. [2020-10-26 23:45:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8645 states to 8645 states and 10636 transitions. [2020-10-26 23:45:45,696 INFO L78 Accepts]: Start accepts. Automaton has 8645 states and 10636 transitions. Word has length 552 [2020-10-26 23:45:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:45,697 INFO L481 AbstractCegarLoop]: Abstraction has 8645 states and 10636 transitions. [2020-10-26 23:45:45,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8645 states and 10636 transitions. [2020-10-26 23:45:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-26 23:45:45,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:45,709 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:45,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:45:45,709 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1900337065, now seen corresponding path program 1 times [2020-10-26 23:45:45,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:45,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084024279] [2020-10-26 23:45:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:47,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 593 [2020-10-26 23:45:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-26 23:45:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:47,575 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:45:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:47,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:47,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:47,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:47,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:45:47,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:47,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:47,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:47,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:47,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:47,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 23:45:47,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:47,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:48,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:48,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:48,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-26 23:45:48,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-26 23:45:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:45:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:48,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084024279] [2020-10-26 23:45:48,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:48,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:48,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928723766] [2020-10-26 23:45:48,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:48,517 INFO L87 Difference]: Start difference. First operand 8645 states and 10636 transitions. Second operand 7 states. [2020-10-26 23:46:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:03,373 INFO L93 Difference]: Finished difference Result 22300 states and 28022 transitions. [2020-10-26 23:46:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:46:03,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-26 23:46:03,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:03,428 INFO L225 Difference]: With dead ends: 22300 [2020-10-26 23:46:03,428 INFO L226 Difference]: Without dead ends: 13023 [2020-10-26 23:46:03,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13023 states. [2020-10-26 23:46:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13023 to 11770. [2020-10-26 23:46:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11770 states. [2020-10-26 23:46:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11770 states to 11770 states and 14210 transitions. [2020-10-26 23:46:03,799 INFO L78 Accepts]: Start accepts. Automaton has 11770 states and 14210 transitions. Word has length 577 [2020-10-26 23:46:03,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:03,801 INFO L481 AbstractCegarLoop]: Abstraction has 11770 states and 14210 transitions. [2020-10-26 23:46:03,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 11770 states and 14210 transitions. [2020-10-26 23:46:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2020-10-26 23:46:03,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:03,817 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:03,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:46:03,817 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:03,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:03,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1561433285, now seen corresponding path program 1 times [2020-10-26 23:46:03,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:03,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407943740] [2020-10-26 23:46:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking...