/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:18:29,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:18:29,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:18:29,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:18:29,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:18:29,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:18:29,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:18:29,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:18:29,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:18:29,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:18:29,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:18:29,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:18:29,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:18:29,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:18:29,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:18:29,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:18:29,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:18:29,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:18:29,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:18:29,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:18:29,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:18:29,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:18:29,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:18:29,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:18:29,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:18:29,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:18:29,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:18:29,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:18:29,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:18:29,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:18:29,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:18:29,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:18:29,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:18:29,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:18:29,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:18:29,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:18:29,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:18:29,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:18:29,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:18:29,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:18:29,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:18:29,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:18:29,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:18:29,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:18:29,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:18:29,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:18:29,387 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:18:29,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:18:29,388 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:18:29,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:18:29,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:18:29,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:18:29,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:18:29,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:18:29,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:18:29,390 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:18:29,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:18:29,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:18:29,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:18:29,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:18:29,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:18:29,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:18:29,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:18:29,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:18:29,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:18:29,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:18:29,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:18:29,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:18:29,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:18:29,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:18:29,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:18:29,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:18:29,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:18:29,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:18:29,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:18:29,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:18:29,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:18:29,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label43.c [2020-10-27 16:18:30,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c721e4fb/6142c1f5593a4b47b5195fd3380e5344/FLAG1b49e643e [2020-10-27 16:18:31,236 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:18:31,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label43.c [2020-10-27 16:18:31,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c721e4fb/6142c1f5593a4b47b5195fd3380e5344/FLAG1b49e643e [2020-10-27 16:18:31,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c721e4fb/6142c1f5593a4b47b5195fd3380e5344 [2020-10-27 16:18:31,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:18:31,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:18:31,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:18:31,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:18:31,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:18:31,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:18:31" (1/1) ... [2020-10-27 16:18:31,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cde717f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:31, skipping insertion in model container [2020-10-27 16:18:31,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:18:31" (1/1) ... [2020-10-27 16:18:31,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:18:31,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:18:34,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:18:34,296 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:18:35,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:18:35,588 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:18:35,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35 WrapperNode [2020-10-27 16:18:35,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:18:35,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:18:35,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:18:35,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:18:35,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... [2020-10-27 16:18:35,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... [2020-10-27 16:18:35,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... [2020-10-27 16:18:35,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... [2020-10-27 16:18:35,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... [2020-10-27 16:18:36,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... [2020-10-27 16:18:36,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... [2020-10-27 16:18:36,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:18:36,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:18:36,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:18:36,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:18:36,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:18:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:18:36,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:18:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:18:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:18:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:18:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:18:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:18:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:18:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:18:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:18:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:18:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:18:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:18:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:18:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:18:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:18:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:18:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:18:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:18:36,505 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:18:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:18:36,506 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:18:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:18:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:18:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:18:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:18:47,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:18:47,194 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:18:47,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:18:47 BoogieIcfgContainer [2020-10-27 16:18:47,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:18:47,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:18:47,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:18:47,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:18:47,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:18:31" (1/3) ... [2020-10-27 16:18:47,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1be1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:18:47, skipping insertion in model container [2020-10-27 16:18:47,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:18:35" (2/3) ... [2020-10-27 16:18:47,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1be1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:18:47, skipping insertion in model container [2020-10-27 16:18:47,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:18:47" (3/3) ... [2020-10-27 16:18:47,213 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43.c [2020-10-27 16:18:47,226 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:18:47,233 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:18:47,247 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:18:47,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:18:47,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:18:47,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:18:47,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:18:47,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:18:47,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:18:47,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:18:47,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:18:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:18:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2020-10-27 16:18:47,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:18:47,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:18:47,532 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:18:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:18:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash 572220655, now seen corresponding path program 1 times [2020-10-27 16:18:47,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:18:47,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011826886] [2020-10-27 16:18:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:18:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:53,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:53,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-27 16:18:53,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5288 [2020-10-27 16:18:53,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:18:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:18:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1721 [2020-10-27 16:18:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:18:56,389 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 16:18:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:18:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:18:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:18:56,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:18:56,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:18:56,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:18:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 16:18:56,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:18:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:18:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:18:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:18:56,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:18:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:18:59,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011826886] [2020-10-27 16:18:59,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:18:59,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:18:59,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950400352] [2020-10-27 16:18:59,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:18:59,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:18:59,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:18:59,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:18:59,333 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-27 16:18:59,511 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 16:19:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:19:22,276 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-27 16:19:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:19:22,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1706 [2020-10-27 16:19:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:19:22,352 INFO L225 Difference]: With dead ends: 6365 [2020-10-27 16:19:22,352 INFO L226 Difference]: Without dead ends: 4075 [2020-10-27 16:19:22,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:19:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-27 16:19:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-27 16:19:22,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-27 16:19:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-27 16:19:22,623 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1706 [2020-10-27 16:19:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:19:22,628 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-27 16:19:22,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:19:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-27 16:19:22,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2020-10-27 16:19:22,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:19:22,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:19:22,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:19:22,803 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:19:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:19:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash -194329625, now seen corresponding path program 1 times [2020-10-27 16:19:22,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:19:22,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825226604] [2020-10-27 16:19:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:19:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:24,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:28,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:28,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1743 [2020-10-27 16:19:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:19:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-27 16:19:28,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:19:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 16:19:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1718 [2020-10-27 16:19:28,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:19:29,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:19:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:29,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:29,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:29,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:19:29,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:29,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:19:29,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:19:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:29,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:19:29,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:29,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:19:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:19:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:19:29,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:19:29,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 16:19:29,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:19:29,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:19:29,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:19:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:19:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:19:29,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 16:19:29,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:19:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:19:32,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825226604] [2020-10-27 16:19:32,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:19:32,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:19:32,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102248633] [2020-10-27 16:19:32,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:19:32,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:19:32,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:19:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:19:32,232 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 6 states. [2020-10-27 16:20:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:20:01,985 INFO L93 Difference]: Finished difference Result 11629 states and 19059 transitions. [2020-10-27 16:20:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:20:01,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1717 [2020-10-27 16:20:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:20:02,037 INFO L225 Difference]: With dead ends: 11629 [2020-10-27 16:20:02,037 INFO L226 Difference]: Without dead ends: 7630 [2020-10-27 16:20:02,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:20:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states. [2020-10-27 16:20:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7600. [2020-10-27 16:20:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7600 states. [2020-10-27 16:20:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7600 states to 7600 states and 10943 transitions. [2020-10-27 16:20:02,316 INFO L78 Accepts]: Start accepts. Automaton has 7600 states and 10943 transitions. Word has length 1717 [2020-10-27 16:20:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:20:02,319 INFO L481 AbstractCegarLoop]: Abstraction has 7600 states and 10943 transitions. [2020-10-27 16:20:02,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:20:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 7600 states and 10943 transitions. [2020-10-27 16:20:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2020-10-27 16:20:02,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:20:02,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:20:02,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:20:02,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:20:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:20:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1199459104, now seen corresponding path program 1 times [2020-10-27 16:20:02,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:20:02,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321813803] [2020-10-27 16:20:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:20:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:03,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:07,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:07,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-27 16:20:07,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:20:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-27 16:20:07,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:20:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 16:20:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1294 [2020-10-27 16:20:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:09,905 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 16:20:10,044 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-27 16:20:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:20:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:11,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:11,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:20:11,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:20:11,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:11,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:20:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:11,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:11,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 16:20:11,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:20:11,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:20:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:11,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:20:11,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 16:20:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:20:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:20:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:20:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:20:11,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:20:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:20:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:20:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:20:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:20:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:20:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:20:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 16:20:29,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321813803] [2020-10-27 16:20:29,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:20:29,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:20:29,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670208336] [2020-10-27 16:20:29,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:20:29,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:20:29,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:20:29,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:20:29,868 INFO L87 Difference]: Start difference. First operand 7600 states and 10943 transitions. Second operand 23 states. [2020-10-27 16:20:30,369 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 16:20:30,579 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 16:20:31,569 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-27 16:20:36,915 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:20:37,119 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:20:43,266 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:20:43,469 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 16:20:46,736 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 16:20:46,906 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:20:50,068 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:20:50,267 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:20:57,111 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:20:57,321 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 16:20:59,192 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 16:21:00,824 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 16:21:04,541 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:21:04,734 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:21:05,946 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:21:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:21:13,689 INFO L93 Difference]: Finished difference Result 16507 states and 24520 transitions. [2020-10-27 16:21:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 16:21:13,690 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1732 [2020-10-27 16:21:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:21:13,741 INFO L225 Difference]: With dead ends: 16507 [2020-10-27 16:21:13,741 INFO L226 Difference]: Without dead ends: 8913 [2020-10-27 16:21:13,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 16:21:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2020-10-27 16:21:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 8886. [2020-10-27 16:21:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8886 states. [2020-10-27 16:21:14,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 12254 transitions. [2020-10-27 16:21:14,125 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 12254 transitions. Word has length 1732 [2020-10-27 16:21:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:21:14,128 INFO L481 AbstractCegarLoop]: Abstraction has 8886 states and 12254 transitions. [2020-10-27 16:21:14,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 16:21:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 12254 transitions. [2020-10-27 16:21:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2020-10-27 16:21:14,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:21:14,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:21:14,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:21:14,183 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:21:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:21:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash 365828641, now seen corresponding path program 1 times [2020-10-27 16:21:14,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:21:14,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511657833] [2020-10-27 16:21:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:21:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:19,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:19,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1758 [2020-10-27 16:21:19,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:21:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5183 [2020-10-27 16:21:19,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 16:21:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 16:21:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1426 [2020-10-27 16:21:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:26,906 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-10-27 16:21:27,114 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 16:21:27,325 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 16:21:27,550 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 16:21:27,784 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 16:21:28,029 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 16:21:28,258 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-27 16:21:28,568 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-27 16:21:28,857 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-27 16:21:29,140 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-27 16:21:29,475 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 43 [2020-10-27 16:21:29,716 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 38 [2020-10-27 16:21:29,938 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-27 16:21:30,191 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2020-10-27 16:21:30,410 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 35 [2020-10-27 16:21:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:21:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:31,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:31,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:21:31,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:21:31,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:21:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:31,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:21:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:21:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:21:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:31,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:31,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:21:31,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 16:21:31,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:21:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 16:21:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:22:01,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511657833] [2020-10-27 16:22:01,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:22:01,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 16:22:01,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020167941] [2020-10-27 16:22:01,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 16:22:01,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:22:01,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 16:22:01,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-10-27 16:22:01,809 INFO L87 Difference]: Start difference. First operand 8886 states and 12254 transitions. Second operand 25 states. [2020-10-27 16:22:02,384 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 16:22:02,704 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 16:22:10,468 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 16:22:10,788 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 124