/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:25:19,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:25:19,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:25:19,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:25:19,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:25:19,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:25:19,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:25:19,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:25:19,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:25:19,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:25:19,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:25:19,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:25:19,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:25:19,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:25:19,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:25:19,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:25:19,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:25:19,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:25:19,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:25:19,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:25:19,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:25:19,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:25:19,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:25:19,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:25:19,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:25:19,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:25:19,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:25:19,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:25:19,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:25:19,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:25:19,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:25:19,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:25:19,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:25:19,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:25:19,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:25:19,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:25:19,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:25:19,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:25:19,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:25:19,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:25:19,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:25:19,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:25:19,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:25:19,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:25:19,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:25:19,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:25:19,693 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:25:19,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:25:19,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:25:19,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:25:19,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:25:19,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:25:19,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:25:19,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:25:19,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:25:19,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:25:19,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:25:19,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:25:19,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:25:19,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:25:19,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:25:19,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:25:19,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:25:19,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:25:19,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:25:19,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:25:19,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:25:19,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:25:19,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:25:19,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:25:19,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:25:19,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:25:20,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:25:20,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:25:20,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:25:20,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:25:20,168 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:25:20,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c [2020-10-28 10:25:20,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ed72928f/d7cedd165cc942a69f9d0ec0587ac1d3/FLAG9b929017e [2020-10-28 10:25:21,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:25:21,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label10.c [2020-10-28 10:25:21,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ed72928f/d7cedd165cc942a69f9d0ec0587ac1d3/FLAG9b929017e [2020-10-28 10:25:21,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ed72928f/d7cedd165cc942a69f9d0ec0587ac1d3 [2020-10-28 10:25:21,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:25:21,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:25:21,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:25:21,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:25:21,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:25:21,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:25:21" (1/1) ... [2020-10-28 10:25:21,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4181ee81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:21, skipping insertion in model container [2020-10-28 10:25:21,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:25:21" (1/1) ... [2020-10-28 10:25:21,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:25:21,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:25:23,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:25:23,524 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:25:24,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:25:24,375 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:25:24,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24 WrapperNode [2020-10-28 10:25:24,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:25:24,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:25:24,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:25:24,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:25:24,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... [2020-10-28 10:25:24,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... [2020-10-28 10:25:24,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... [2020-10-28 10:25:24,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... [2020-10-28 10:25:24,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... [2020-10-28 10:25:24,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... [2020-10-28 10:25:24,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... [2020-10-28 10:25:24,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:25:24,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:25:24,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:25:24,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:25:24,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:25:24,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:25:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:25:24,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:25:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:25:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:25:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:25:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:25:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:25:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:25:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:25:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:25:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:25:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:25:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:25:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:25:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:25:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:25:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:25:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:25:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:25:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:25:30,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:25:30,109 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:25:30,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:25:30 BoogieIcfgContainer [2020-10-28 10:25:30,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:25:30,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:25:30,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:25:30,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:25:30,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:25:21" (1/3) ... [2020-10-28 10:25:30,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aedcbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:25:30, skipping insertion in model container [2020-10-28 10:25:30,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:25:24" (2/3) ... [2020-10-28 10:25:30,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aedcbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:25:30, skipping insertion in model container [2020-10-28 10:25:30,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:25:30" (3/3) ... [2020-10-28 10:25:30,122 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label10.c [2020-10-28 10:25:30,135 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:25:30,141 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:25:30,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:25:30,190 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:25:30,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:25:30,190 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:25:30,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:25:30,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:25:30,191 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:25:30,191 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:25:30,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:25:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:25:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-28 10:25:30,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:30,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:25:30,296 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:30,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1067452632, now seen corresponding path program 1 times [2020-10-28 10:25:30,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:30,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126310789] [2020-10-28 10:25:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:36,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:36,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 839 [2020-10-28 10:25:36,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:25:36,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 10:25:36,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:36,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:36,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:25:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:25:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 830 [2020-10-28 10:25:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 10:25:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:25:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:36,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:36,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:25:36,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:36,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 10:25:36,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:36,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:25:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:25:38,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126310789] [2020-10-28 10:25:38,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:25:38,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:25:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751585682] [2020-10-28 10:25:38,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:25:38,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:38,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:25:38,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:25:38,167 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-28 10:25:49,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:25:49,934 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-28 10:25:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:25:49,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 823 [2020-10-28 10:25:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:25:50,007 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:25:50,007 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:25:50,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:25:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:25:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-28 10:25:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-28 10:25:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2974 transitions. [2020-10-28 10:25:50,230 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2974 transitions. Word has length 823 [2020-10-28 10:25:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:25:50,233 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2974 transitions. [2020-10-28 10:25:50,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:25:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2974 transitions. [2020-10-28 10:25:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-10-28 10:25:50,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:50,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:25:50,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:25:50,306 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash 28822755, now seen corresponding path program 1 times [2020-10-28 10:25:50,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:50,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977526997] [2020-10-28 10:25:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:55,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-28 10:25:55,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:25:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-28 10:25:55,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:55,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:55,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:25:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:25:55,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:25:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:55,932 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:25:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:25:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:55,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:55,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:25:55,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:55,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:25:55,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:55,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:25:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:25:56,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:25:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:56,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:56,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:56,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:25:56,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:56,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:25:56,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:56,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:56,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:25:56,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:25:56,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:25:56,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:25:56,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977526997] [2020-10-28 10:25:56,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:25:56,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:25:56,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268891103] [2020-10-28 10:25:56,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:25:56,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:56,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:25:56,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:25:56,518 INFO L87 Difference]: Start difference. First operand 1688 states and 2974 transitions. Second operand 7 states. [2020-10-28 10:25:56,666 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:08,355 INFO L93 Difference]: Finished difference Result 5197 states and 9171 transitions. [2020-10-28 10:26:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:26:08,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 832 [2020-10-28 10:26:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:08,388 INFO L225 Difference]: With dead ends: 5197 [2020-10-28 10:26:08,389 INFO L226 Difference]: Without dead ends: 3515 [2020-10-28 10:26:08,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:26:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2020-10-28 10:26:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3426. [2020-10-28 10:26:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3426 states. [2020-10-28 10:26:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 5327 transitions. [2020-10-28 10:26:08,562 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 5327 transitions. Word has length 832 [2020-10-28 10:26:08,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:08,562 INFO L481 AbstractCegarLoop]: Abstraction has 3426 states and 5327 transitions. [2020-10-28 10:26:08,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 5327 transitions. [2020-10-28 10:26:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2020-10-28 10:26:08,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:08,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:26:08,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:26:08,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:08,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:08,599 INFO L82 PathProgramCache]: Analyzing trace with hash -697686306, now seen corresponding path program 1 times [2020-10-28 10:26:08,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:08,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795385650] [2020-10-28 10:26:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:13,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 861 [2020-10-28 10:26:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:26:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 10:26:13,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:13,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:26:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:26:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:26:14,012 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:26:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:14,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:14,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:14,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:26:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:14,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:26:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:14,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:14,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:14,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:26:14,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:26:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:14,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:26:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:26:14,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795385650] [2020-10-28 10:26:14,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:26:14,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:26:14,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636015] [2020-10-28 10:26:14,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:14,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:14,509 INFO L87 Difference]: Start difference. First operand 3426 states and 5327 transitions. Second operand 7 states. [2020-10-28 10:26:14,647 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:16,766 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:26:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:27,507 INFO L93 Difference]: Finished difference Result 10466 states and 16525 transitions. [2020-10-28 10:26:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:26:27,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 843 [2020-10-28 10:26:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:27,556 INFO L225 Difference]: With dead ends: 10466 [2020-10-28 10:26:27,556 INFO L226 Difference]: Without dead ends: 7046 [2020-10-28 10:26:27,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:26:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7046 states. [2020-10-28 10:26:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7046 to 6961. [2020-10-28 10:26:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6961 states. [2020-10-28 10:26:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 9807 transitions. [2020-10-28 10:26:27,817 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 9807 transitions. Word has length 843 [2020-10-28 10:26:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:27,817 INFO L481 AbstractCegarLoop]: Abstraction has 6961 states and 9807 transitions. [2020-10-28 10:26:27,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 9807 transitions. [2020-10-28 10:26:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-10-28 10:26:27,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:27,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:26:27,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:26:27,850 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:27,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:27,851 INFO L82 PathProgramCache]: Analyzing trace with hash 681734881, now seen corresponding path program 1 times [2020-10-28 10:26:27,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:27,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643432210] [2020-10-28 10:26:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:32,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 876 [2020-10-28 10:26:32,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:26:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 10:26:32,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:32,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 10:26:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:26:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:33,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:33,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:33,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:33,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:33,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:26:33,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:33,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:26:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:26:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:33,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:33,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 10:26:33,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:26:33,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:33,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 10:26:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 10:26:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:26:33,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 10:26:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:33,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:26:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:26:33,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643432210] [2020-10-28 10:26:33,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:26:33,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:26:33,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473540135] [2020-10-28 10:26:33,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:33,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:33,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:33,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:33,972 INFO L87 Difference]: Start difference. First operand 6961 states and 9807 transitions. Second operand 7 states. [2020-10-28 10:26:34,205 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:34,566 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:53,831 INFO L93 Difference]: Finished difference Result 20163 states and 29684 transitions. [2020-10-28 10:26:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:26:53,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 856 [2020-10-28 10:26:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:53,923 INFO L225 Difference]: With dead ends: 20163 [2020-10-28 10:26:53,923 INFO L226 Difference]: Without dead ends: 13208 [2020-10-28 10:26:53,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:26:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13208 states. [2020-10-28 10:26:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13208 to 13193. [2020-10-28 10:26:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13193 states. [2020-10-28 10:26:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13193 states to 13193 states and 18467 transitions. [2020-10-28 10:26:54,398 INFO L78 Accepts]: Start accepts. Automaton has 13193 states and 18467 transitions. Word has length 856 [2020-10-28 10:26:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:54,399 INFO L481 AbstractCegarLoop]: Abstraction has 13193 states and 18467 transitions. [2020-10-28 10:26:54,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13193 states and 18467 transitions. [2020-10-28 10:26:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2020-10-28 10:26:54,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:54,461 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:26:54,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:26:54,461 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:54,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1967852071, now seen corresponding path program 1 times [2020-10-28 10:26:54,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:54,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487023037] [2020-10-28 10:26:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:54,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:54,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:54,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:59,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:59,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 910 [2020-10-28 10:26:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:26:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-28 10:26:59,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:59,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:59,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:26:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:26:59,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 10:26:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:00,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:27:00,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:00,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:27:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:27:00,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:27:00,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:27:00,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:27:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:27:00,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:27:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:27:00,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:27:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 10:27:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:27:00,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:27:00,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:27:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:27:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:27:00,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:27:00,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:00,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:27:00,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:00,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 77 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 10:27:00,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487023037] [2020-10-28 10:27:00,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:27:00,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:27:00,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097318306] [2020-10-28 10:27:00,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:27:00,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:00,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:27:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:27:00,627 INFO L87 Difference]: Start difference. First operand 13193 states and 18467 transitions. Second operand 8 states. [2020-10-28 10:27:00,768 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:27:03,983 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:27:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:15,325 INFO L93 Difference]: Finished difference Result 39576 states and 58512 transitions. [2020-10-28 10:27:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:27:15,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 886 [2020-10-28 10:27:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:15,448 INFO L225 Difference]: With dead ends: 39576 [2020-10-28 10:27:15,449 INFO L226 Difference]: Without dead ends: 26393 [2020-10-28 10:27:15,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:27:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26393 states. [2020-10-28 10:27:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26393 to 25411. [2020-10-28 10:27:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25411 states. [2020-10-28 10:27:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25411 states to 25411 states and 34282 transitions. [2020-10-28 10:27:16,340 INFO L78 Accepts]: Start accepts. Automaton has 25411 states and 34282 transitions. Word has length 886 [2020-10-28 10:27:16,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:27:16,341 INFO L481 AbstractCegarLoop]: Abstraction has 25411 states and 34282 transitions. [2020-10-28 10:27:16,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:27:16,341 INFO L276 IsEmpty]: Start isEmpty. Operand 25411 states and 34282 transitions. [2020-10-28 10:27:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-10-28 10:27:16,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:27:16,439 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:27:16,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:27:16,439 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:27:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:27:16,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1690800325, now seen corresponding path program 1 times [2020-10-28 10:27:16,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:27:16,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423936405] [2020-10-28 10:27:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:27:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:21,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:21,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 932 [2020-10-28 10:27:21,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:27:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-28 10:27:21,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:21,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 10:27:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 10:27:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:27:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:21,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:21,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:27:21,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:21,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:21,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:21,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:21,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:27:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 10:27:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:22,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:22,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:27:22,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 10:27:22,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:22,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 10:27:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:22,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 10:27:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:22,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:22,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:27:22,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:22,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:27:22,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:22,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:27:22,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:22,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 96 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 10:27:22,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423936405] [2020-10-28 10:27:22,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:27:22,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:27:22,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962535189] [2020-10-28 10:27:22,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:27:22,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:22,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:27:22,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:27:22,621 INFO L87 Difference]: Start difference. First operand 25411 states and 34282 transitions. Second operand 7 states. [2020-10-28 10:27:29,869 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:27:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:38,245 INFO L93 Difference]: Finished difference Result 61124 states and 85995 transitions. [2020-10-28 10:27:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:27:38,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 910 [2020-10-28 10:27:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:38,377 INFO L225 Difference]: With dead ends: 61124 [2020-10-28 10:27:38,378 INFO L226 Difference]: Without dead ends: 34877 [2020-10-28 10:27:38,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:27:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34877 states. [2020-10-28 10:27:39,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34877 to 33048. [2020-10-28 10:27:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33048 states. [2020-10-28 10:27:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33048 states to 33048 states and 42311 transitions. [2020-10-28 10:27:39,486 INFO L78 Accepts]: Start accepts. Automaton has 33048 states and 42311 transitions. Word has length 910 [2020-10-28 10:27:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:27:39,487 INFO L481 AbstractCegarLoop]: Abstraction has 33048 states and 42311 transitions. [2020-10-28 10:27:39,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:27:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 33048 states and 42311 transitions. [2020-10-28 10:27:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-10-28 10:27:39,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:27:39,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:27:39,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:27:39,567 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:27:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:27:39,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1828719378, now seen corresponding path program 1 times [2020-10-28 10:27:39,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:27:39,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011827637] [2020-10-28 10:27:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:27:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:44,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:44,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-28 10:27:44,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:27:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 10:27:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:44,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:27:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:27:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 10:27:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:44,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:27:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:44,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:27:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:45,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:45,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 10:27:45,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:45,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 10:27:45,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:45,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:45,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:45,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 10:27:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 10:27:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:45,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:27:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:27:45,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:45,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:27:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 10:27:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:27:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:27:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:45,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:27:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 117 proven. 66 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-28 10:27:45,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011827637] [2020-10-28 10:27:45,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:27:45,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:27:45,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842326329] [2020-10-28 10:27:45,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:27:45,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:27:45,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:27:45,593 INFO L87 Difference]: Start difference. First operand 33048 states and 42311 transitions. Second operand 7 states. [2020-10-28 10:27:55,051 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:27:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:59,322 INFO L93 Difference]: Finished difference Result 96961 states and 127768 transitions. [2020-10-28 10:27:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:27:59,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 949 [2020-10-28 10:27:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:59,545 INFO L225 Difference]: With dead ends: 96961 [2020-10-28 10:27:59,546 INFO L226 Difference]: Without dead ends: 63923 [2020-10-28 10:27:59,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:27:59,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63923 states. [2020-10-28 10:28:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63923 to 62055. [2020-10-28 10:28:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62055 states. [2020-10-28 10:28:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62055 states to 62055 states and 76452 transitions. [2020-10-28 10:28:01,952 INFO L78 Accepts]: Start accepts. Automaton has 62055 states and 76452 transitions. Word has length 949 [2020-10-28 10:28:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:01,952 INFO L481 AbstractCegarLoop]: Abstraction has 62055 states and 76452 transitions. [2020-10-28 10:28:01,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:28:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 62055 states and 76452 transitions. [2020-10-28 10:28:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1238 [2020-10-28 10:28:02,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:02,198 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:28:02,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:28:02,198 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:02,199 INFO L82 PathProgramCache]: Analyzing trace with hash -398883532, now seen corresponding path program 1 times [2020-10-28 10:28:02,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:02,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176521212] [2020-10-28 10:28:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:02,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:07,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:07,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1261 [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-28 10:28:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:07,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:07,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:07,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:28:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:07,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:07,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:07,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:28:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:28:07,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:07,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:07,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:28:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:07,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:07,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 10:28:07,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:07,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:28:07,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:07,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 10:28:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:07,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:07,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:28:07,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 10:28:07,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:07,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:07,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:28:07,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 10:28:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:08,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:08,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:08,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-28 10:28:08,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-28 10:28:08,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:08,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-28 10:28:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 10:28:09,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176521212] [2020-10-28 10:28:09,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:28:09,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:28:09,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628379388] [2020-10-28 10:28:09,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:28:09,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:28:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:28:09,340 INFO L87 Difference]: Start difference. First operand 62055 states and 76452 transitions. Second operand 7 states. [2020-10-28 10:28:09,598 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:28:12,241 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:28:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:28:32,565 INFO L93 Difference]: Finished difference Result 194656 states and 247646 transitions. [2020-10-28 10:28:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:28:32,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1237 [2020-10-28 10:28:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:28:33,370 INFO L225 Difference]: With dead ends: 194656 [2020-10-28 10:28:33,370 INFO L226 Difference]: Without dead ends: 131753 [2020-10-28 10:28:33,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:28:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131753 states. [2020-10-28 10:28:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131753 to 130020. [2020-10-28 10:28:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130020 states. [2020-10-28 10:28:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130020 states to 130020 states and 162631 transitions. [2020-10-28 10:28:37,011 INFO L78 Accepts]: Start accepts. Automaton has 130020 states and 162631 transitions. Word has length 1237 [2020-10-28 10:28:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:37,018 INFO L481 AbstractCegarLoop]: Abstraction has 130020 states and 162631 transitions. [2020-10-28 10:28:37,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:28:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 130020 states and 162631 transitions. [2020-10-28 10:28:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1245 [2020-10-28 10:28:37,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:37,186 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:28:37,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:28:37,187 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:37,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:37,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1006699543, now seen corresponding path program 1 times [2020-10-28 10:28:37,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:37,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752438235] [2020-10-28 10:28:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:38,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:42,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1268 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-28 10:28:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:42,973 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:28:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:42,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:42,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:42,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:28:42,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:42,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:42,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:43,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:28:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:43,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:28:43,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:28:43,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:43,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:28:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:28:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:43,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:43,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 10:28:43,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-28 10:28:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:43,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:28:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-28 10:28:43,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:28:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:44,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:44,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 10:28:44,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:44,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 10:28:44,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:44,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:28:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 10:28:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:44,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-28 10:28:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 10:28:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:28:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:44,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 10:28:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 429 proven. 67 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 10:28:45,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752438235] [2020-10-28 10:28:45,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:28:45,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:28:45,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909425286] [2020-10-28 10:28:45,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:28:45,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:45,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:28:45,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:28:45,942 INFO L87 Difference]: Start difference. First operand 130020 states and 162631 transitions. Second operand 8 states. [2020-10-28 10:28:46,251 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95