/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem04_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:03:01,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:03:01,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:03:01,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:03:01,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:03:01,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:03:01,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:03:01,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:03:01,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:03:01,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:03:01,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:03:01,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:03:01,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:03:01,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:03:01,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:03:01,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:03:01,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:03:01,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:03:01,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:03:01,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:03:01,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:03:01,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:03:01,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:03:01,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:03:01,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:03:01,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:03:01,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:03:01,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:03:01,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:03:01,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:03:01,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:03:01,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:03:01,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:03:01,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:03:01,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:03:01,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:03:01,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:03:01,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:03:01,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:03:01,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:03:01,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:03:01,391 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 [2020-10-29 05:03:01,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:03:01,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:03:01,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:03:01,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:03:01,442 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:03:01,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:03:01,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:03:01,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:03:01,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:03:01,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:03:01,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:03:01,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:03:01,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:03:01,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:03:01,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:03:01,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:03:01,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:03:01,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:03:01,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:03:01,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:03:01,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:03:01,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:03:01,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:03:01,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:03:01,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:03:01,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:03:01,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:03:01,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:03:01,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:03:01,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:03:01,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:03:01,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:03:01,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:03:01,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:03:01,879 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:03:01,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label03.c [2020-10-29 05:03:01,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a23a121/e491244506b94a72b735955505a63834/FLAG768b0a1b6 [2020-10-29 05:03:03,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:03:03,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label03.c [2020-10-29 05:03:03,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a23a121/e491244506b94a72b735955505a63834/FLAG768b0a1b6 [2020-10-29 05:03:03,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06a23a121/e491244506b94a72b735955505a63834 [2020-10-29 05:03:03,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:03:03,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:03:03,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:03:03,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:03:03,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:03:03,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:03:03" (1/1) ... [2020-10-29 05:03:03,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b96d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:03, skipping insertion in model container [2020-10-29 05:03:03,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:03:03" (1/1) ... [2020-10-29 05:03:03,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:03:03,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:03:04,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:03:04,966 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:03:05,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:03:05,742 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:03:05,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05 WrapperNode [2020-10-29 05:03:05,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:03:05,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:03:05,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:03:05,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:03:05,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (1/1) ... [2020-10-29 05:03:05,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (1/1) ... [2020-10-29 05:03:05,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (1/1) ... [2020-10-29 05:03:05,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (1/1) ... [2020-10-29 05:03:05,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (1/1) ... [2020-10-29 05:03:06,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (1/1) ... [2020-10-29 05:03:06,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (1/1) ... [2020-10-29 05:03:06,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:03:06,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:03:06,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:03:06,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:03:06,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (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 [2020-10-29 05:03:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:03:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:03:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:03:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:03:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:03:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:03:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:03:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:03:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:03:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:03:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:03:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:03:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:03:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:03:06,149 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:03:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:03:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:03:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:03:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:03:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:03:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:03:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:03:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:03:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:03:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:03:13,080 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:03:13,080 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:03:13,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:03:13 BoogieIcfgContainer [2020-10-29 05:03:13,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:03:13,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:03:13,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:03:13,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:03:13,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:03:03" (1/3) ... [2020-10-29 05:03:13,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef28b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:03:13, skipping insertion in model container [2020-10-29 05:03:13,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:03:05" (2/3) ... [2020-10-29 05:03:13,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef28b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:03:13, skipping insertion in model container [2020-10-29 05:03:13,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:03:13" (3/3) ... [2020-10-29 05:03:13,093 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label03.c [2020-10-29 05:03:13,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:03:13,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:03:13,120 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:03:13,153 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:03:13,154 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:03:13,154 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:03:13,154 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:03:13,154 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:03:13,154 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:03:13,154 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:03:13,154 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:03:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:03:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-29 05:03:13,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:13,244 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] [2020-10-29 05:03:13,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:13,252 INFO L82 PathProgramCache]: Analyzing trace with hash -951808692, now seen corresponding path program 1 times [2020-10-29 05:03:13,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:13,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315653209] [2020-10-29 05:03:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:19,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:19,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-29 05:03:19,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:03:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-29 05:03:19,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:19,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:03:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:03:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 805 [2020-10-29 05:03:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:03:19,954 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:03:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:19,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:19,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:19,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:03:19,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:19,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:03:19,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:03:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:03:21,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315653209] [2020-10-29 05:03:21,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:03:21,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:03:21,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15465856] [2020-10-29 05:03:21,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:03:21,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:21,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:03:21,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:03:21,132 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:03:21,361 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:03:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:35,068 INFO L93 Difference]: Finished difference Result 2677 states and 5140 transitions. [2020-10-29 05:03:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:03:35,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 798 [2020-10-29 05:03:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:35,121 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:03:35,121 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:03:35,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:03:35,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:03:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2020-10-29 05:03:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-29 05:03:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2781 transitions. [2020-10-29 05:03:35,319 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2781 transitions. Word has length 798 [2020-10-29 05:03:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:35,323 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2781 transitions. [2020-10-29 05:03:35,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:03:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2781 transitions. [2020-10-29 05:03:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-29 05:03:35,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:35,358 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] [2020-10-29 05:03:35,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:03:35,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:35,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:35,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1335174195, now seen corresponding path program 1 times [2020-10-29 05:03:35,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:35,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818748309] [2020-10-29 05:03:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:40,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:40,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:40,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-29 05:03:40,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:03:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 05:03:40,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:40,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:03:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:03:40,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 802 [2020-10-29 05:03:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:03:41,174 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:03:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:41,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:41,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:41,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:03:41,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:41,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:03:41,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:41,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:41,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:03:41,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:41,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:03:41,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:41,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:41,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:41,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:41,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:03:41,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:03:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:03:41,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818748309] [2020-10-29 05:03:41,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:41,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:03:41,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754786975] [2020-10-29 05:03:41,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:03:41,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:41,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:03:41,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:03:41,874 INFO L87 Difference]: Start difference. First operand 1699 states and 2781 transitions. Second operand 5 states. [2020-10-29 05:03:42,191 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:03:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:58,036 INFO L93 Difference]: Finished difference Result 5098 states and 8409 transitions. [2020-10-29 05:03:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:03:58,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 809 [2020-10-29 05:03:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:58,058 INFO L225 Difference]: With dead ends: 5098 [2020-10-29 05:03:58,058 INFO L226 Difference]: Without dead ends: 3405 [2020-10-29 05:03:58,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:03:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2020-10-29 05:03:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3401. [2020-10-29 05:03:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3401 states. [2020-10-29 05:03:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 5249 transitions. [2020-10-29 05:03:58,165 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 5249 transitions. Word has length 809 [2020-10-29 05:03:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:58,168 INFO L481 AbstractCegarLoop]: Abstraction has 3401 states and 5249 transitions. [2020-10-29 05:03:58,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:03:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 5249 transitions. [2020-10-29 05:03:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-29 05:03:58,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:58,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-29 05:03:58,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:03:58,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:58,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:58,188 INFO L82 PathProgramCache]: Analyzing trace with hash 684402128, now seen corresponding path program 1 times [2020-10-29 05:03:58,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:58,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577320505] [2020-10-29 05:03:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:03,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:03,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-29 05:04:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:04:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 05:04:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:03,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 05:04:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:04:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 718 [2020-10-29 05:04:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:06,917 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-29 05:04:07,132 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-29 05:04:07,359 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-29 05:04:07,577 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-10-29 05:04:07,833 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-29 05:04:08,114 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-29 05:04:08,472 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-10-29 05:04:08,744 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-29 05:04:09,015 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-29 05:04:09,352 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-29 05:04:09,741 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-10-29 05:04:09,973 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2020-10-29 05:04:10,182 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-29 05:04:10,381 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-29 05:04:10,595 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:04:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:10,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:10,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:10,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:10,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:04:10,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:10,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:10,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:10,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:10,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:04:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:04:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:04:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:10,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:10,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:04:10,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:10,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:04:10,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:10,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:10,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:04:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 05:04:17,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577320505] [2020-10-29 05:04:17,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:17,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 05:04:17,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178867282] [2020-10-29 05:04:17,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 05:04:17,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:17,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 05:04:17,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-29 05:04:17,842 INFO L87 Difference]: Start difference. First operand 3401 states and 5249 transitions. Second operand 19 states. [2020-10-29 05:04:18,559 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 05:04:18,991 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-29 05:04:24,825 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2020-10-29 05:04:28,109 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:04:28,544 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-29 05:04:30,321 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 132 [2020-10-29 05:04:33,836 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-29 05:04:38,302 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 05:04:38,728 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-29 05:04:40,985 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2020-10-29 05:04:45,392 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2020-10-29 05:04:48,468 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 05:04:48,843 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 05:04:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:51,325 INFO L93 Difference]: Finished difference Result 7511 states and 11942 transitions. [2020-10-29 05:04:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 05:04:51,327 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 818 [2020-10-29 05:04:51,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:51,357 INFO L225 Difference]: With dead ends: 7511 [2020-10-29 05:04:51,357 INFO L226 Difference]: Without dead ends: 4116 [2020-10-29 05:04:51,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-10-29 05:04:51,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2020-10-29 05:04:51,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 4110. [2020-10-29 05:04:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4110 states. [2020-10-29 05:04:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 5973 transitions. [2020-10-29 05:04:51,478 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 5973 transitions. Word has length 818 [2020-10-29 05:04:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:51,481 INFO L481 AbstractCegarLoop]: Abstraction has 4110 states and 5973 transitions. [2020-10-29 05:04:51,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 05:04:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 5973 transitions. [2020-10-29 05:04:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-29 05:04:51,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:51,517 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 05:04:51,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:04:51,518 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash -497189159, now seen corresponding path program 1 times [2020-10-29 05:04:51,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:51,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019515723] [2020-10-29 05:04:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:54,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:56,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:56,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-29 05:04:56,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:04:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 05:04:56,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:56,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:04:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 05:04:56,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 802 [2020-10-29 05:04:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:57,223 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:04:57,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:57,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:57,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:04:57,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:57,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:57,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:57,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:04:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:04:57,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:57,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:04:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:04:57,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019515723] [2020-10-29 05:04:57,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:57,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:04:57,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194470124] [2020-10-29 05:04:57,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:04:57,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:57,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:04:57,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:04:57,833 INFO L87 Difference]: Start difference. First operand 4110 states and 5973 transitions. Second operand 5 states. [2020-10-29 05:04:58,297 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:05:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:05:14,670 INFO L93 Difference]: Finished difference Result 9910 states and 15019 transitions. [2020-10-29 05:05:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:05:14,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 819 [2020-10-29 05:05:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:05:14,704 INFO L225 Difference]: With dead ends: 9910 [2020-10-29 05:05:14,704 INFO L226 Difference]: Without dead ends: 5806 [2020-10-29 05:05:14,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:05:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2020-10-29 05:05:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 5800. [2020-10-29 05:05:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5800 states. [2020-10-29 05:05:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5800 states to 5800 states and 8250 transitions. [2020-10-29 05:05:14,860 INFO L78 Accepts]: Start accepts. Automaton has 5800 states and 8250 transitions. Word has length 819 [2020-10-29 05:05:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:05:14,861 INFO L481 AbstractCegarLoop]: Abstraction has 5800 states and 8250 transitions. [2020-10-29 05:05:14,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:05:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5800 states and 8250 transitions. [2020-10-29 05:05:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-10-29 05:05:14,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:05:14,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:05:14,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:05:14,886 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:05:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:05:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1535952609, now seen corresponding path program 1 times [2020-10-29 05:05:14,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:05:14,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112997964] [2020-10-29 05:05:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:05:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:19,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:19,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-29 05:05:19,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:05:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 05:05:19,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:19,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:05:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 05:05:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-29 05:05:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:21,788 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2020-10-29 05:05:21,948 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-29 05:05:22,100 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-29 05:05:22,288 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-29 05:05:22,476 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-29 05:05:22,684 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-29 05:05:22,896 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-29 05:05:23,088 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-29 05:05:23,345 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-29 05:05:23,659 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-10-29 05:05:24,035 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 47 [2020-10-29 05:05:24,402 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 44 [2020-10-29 05:05:24,703 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 39 [2020-10-29 05:05:24,921 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:05:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:05:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:05:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:05:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:24,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:05:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:24,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:24,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:05:24,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:05:25,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:25,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:05:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:05:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:05:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:05:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:05:25,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:05:25,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 05:05:25,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:05:25,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 05:05:25,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:05:25,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:05:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:05:25,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:05:25,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 05:05:25,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:05:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 05:05:31,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112997964] [2020-10-29 05:05:31,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:05:31,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:05:31,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521103033] [2020-10-29 05:05:31,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:05:31,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:05:31,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:05:31,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:05:31,209 INFO L87 Difference]: Start difference. First operand 5800 states and 8250 transitions. Second operand 17 states. [2020-10-29 05:05:33,655 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:05:34,072 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:05:43,703 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:05:44,116 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:05:50,447 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 05:05:52,459 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 128 [2020-10-29 05:05:55,249 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:05:55,702 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-29 05:05:56,789 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2020-10-29 05:06:03,539 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2020-10-29 05:06:04,806 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 129 [2020-10-29 05:06:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:08,535 INFO L93 Difference]: Finished difference Result 12263 states and 17857 transitions. [2020-10-29 05:06:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:06:08,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 889 [2020-10-29 05:06:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:08,565 INFO L225 Difference]: With dead ends: 12263 [2020-10-29 05:06:08,565 INFO L226 Difference]: Without dead ends: 6469 [2020-10-29 05:06:08,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:06:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2020-10-29 05:06:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 6463. [2020-10-29 05:06:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6463 states. [2020-10-29 05:06:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 8927 transitions. [2020-10-29 05:06:08,720 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 8927 transitions. Word has length 889 [2020-10-29 05:06:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:08,721 INFO L481 AbstractCegarLoop]: Abstraction has 6463 states and 8927 transitions. [2020-10-29 05:06:08,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:06:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 8927 transitions. [2020-10-29 05:06:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2020-10-29 05:06:08,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:08,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:06:08,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:06:08,745 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:08,745 INFO L82 PathProgramCache]: Analyzing trace with hash -866538556, now seen corresponding path program 1 times [2020-10-29 05:06:08,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:08,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249556021] [2020-10-29 05:06:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:08,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:13,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:13,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 912 [2020-10-29 05:06:13,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:06:13,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 05:06:13,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:13,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:06:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 05:06:13,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 802 [2020-10-29 05:06:13,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:14,523 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:06:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:06:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:14,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:14,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:06:14,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:14,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:06:14,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:14,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:06:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:14,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:14,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 05:06:14,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:06:14,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:14,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 05:06:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:14,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:14,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 05:06:14,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:14,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 05:06:14,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:14,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 05:06:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 05:06:15,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249556021] [2020-10-29 05:06:15,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:15,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:06:15,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92162807] [2020-10-29 05:06:15,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:06:15,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:15,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:06:15,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:06:15,394 INFO L87 Difference]: Start difference. First operand 6463 states and 8927 transitions. Second operand 5 states. [2020-10-29 05:06:15,614 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:06:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:06:31,231 INFO L93 Difference]: Finished difference Result 17993 states and 25752 transitions. [2020-10-29 05:06:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:06:31,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 892 [2020-10-29 05:06:31,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:06:31,290 INFO L225 Difference]: With dead ends: 17993 [2020-10-29 05:06:31,290 INFO L226 Difference]: Without dead ends: 11536 [2020-10-29 05:06:31,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:06:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11536 states. [2020-10-29 05:06:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11536 to 11530. [2020-10-29 05:06:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11530 states. [2020-10-29 05:06:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11530 states to 11530 states and 15256 transitions. [2020-10-29 05:06:31,585 INFO L78 Accepts]: Start accepts. Automaton has 11530 states and 15256 transitions. Word has length 892 [2020-10-29 05:06:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:06:31,586 INFO L481 AbstractCegarLoop]: Abstraction has 11530 states and 15256 transitions. [2020-10-29 05:06:31,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:06:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 11530 states and 15256 transitions. [2020-10-29 05:06:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2020-10-29 05:06:31,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:06:31,624 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:06:31,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:06:31,624 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:06:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:06:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash -550351491, now seen corresponding path program 1 times [2020-10-29 05:06:31,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:06:31,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200946713] [2020-10-29 05:06:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:06:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:31,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:36,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:36,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 937 [2020-10-29 05:06:36,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:06:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 05:06:36,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:36,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:06:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 05:06:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 05:06:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:37,053 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:06:37,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:06:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:37,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:06:37,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:06:37,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:37,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:06:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:37,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:37,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:06:37,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:06:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:37,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:06:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:06:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:37,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 05:06:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:37,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:37,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:06:37,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:06:37,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:37,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:06:37,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:06:37,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 05:06:37,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 05:06:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:06:37,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:06:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:06:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:06:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:06:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 05:06:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:06:37,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:06:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:06:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:06:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 05:06:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:06:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 05:06:37,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200946713] [2020-10-29 05:06:37,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:06:37,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:06:37,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264792807] [2020-10-29 05:06:37,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:06:37,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:06:37,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:06:37,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:06:37,862 INFO L87 Difference]: Start difference. First operand 11530 states and 15256 transitions. Second operand 7 states. [2020-10-29 05:06:38,342 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:06:38,745 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 93