/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:02:42,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:02:42,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:02:42,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:02:42,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:02:42,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:02:42,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:02:42,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:02:42,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:02:42,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:02:42,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:02:42,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:02:42,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:02:42,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:02:42,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:02:42,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:02:42,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:02:42,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:02:42,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:02:42,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:02:42,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:02:42,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:02:42,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:02:42,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:02:42,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:02:42,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:02:42,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:02:42,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:02:42,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:02:42,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:02:42,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:02:42,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:02:42,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:02:42,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:02:42,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:02:42,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:02:42,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:02:42,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:02:42,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:02:42,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:02:42,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:02:42,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:02:42,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:02:42,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:02:42,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:02:42,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:02:42,776 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:02:42,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:02:42,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:02:42,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:02:42,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:02:42,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:02:42,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:02:42,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:02:42,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:02:42,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:02:42,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:02:42,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:02:42,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:02:42,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:02:42,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:02:42,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:02:42,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:02:42,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:02:42,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:02:42,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:02:42,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:02:42,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:02:42,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:02:42,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:02:42,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:02:42,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:02:43,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:02:43,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:02:43,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:02:43,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:02:43,223 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:02:43,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-27 16:02:43,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6189c2974/bf7278c208e948c290650873a0d02a57/FLAGcdcb0ba0c [2020-10-27 16:02:44,386 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:02:44,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-27 16:02:44,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6189c2974/bf7278c208e948c290650873a0d02a57/FLAGcdcb0ba0c [2020-10-27 16:02:44,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6189c2974/bf7278c208e948c290650873a0d02a57 [2020-10-27 16:02:44,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:02:44,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:02:44,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:02:44,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:02:44,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:02:44,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:02:44" (1/1) ... [2020-10-27 16:02:44,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194dab58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:44, skipping insertion in model container [2020-10-27 16:02:44,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:02:44" (1/1) ... [2020-10-27 16:02:44,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:02:45,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:02:46,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:02:46,574 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:02:47,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:02:47,642 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:02:47,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47 WrapperNode [2020-10-27 16:02:47,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:02:47,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:02:47,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:02:47,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:02:47,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... [2020-10-27 16:02:47,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... [2020-10-27 16:02:47,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... [2020-10-27 16:02:47,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... [2020-10-27 16:02:47,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... [2020-10-27 16:02:47,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... [2020-10-27 16:02:47,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... [2020-10-27 16:02:48,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:02:48,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:02:48,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:02:48,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:02:48,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:02:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:02:48,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:02:48,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:02:48,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:02:48,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:02:48,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:02:48,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:02:48,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:02:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:02:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:02:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:02:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:02:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:02:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:02:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:02:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:02:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:02:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:02:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:02:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:02:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:02:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:02:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:02:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:02:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:02:53,493 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:02:53,493 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:02:53,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:02:53 BoogieIcfgContainer [2020-10-27 16:02:53,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:02:53,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:02:53,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:02:53,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:02:53,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:02:44" (1/3) ... [2020-10-27 16:02:53,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536c5a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:02:53, skipping insertion in model container [2020-10-27 16:02:53,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:02:47" (2/3) ... [2020-10-27 16:02:53,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536c5a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:02:53, skipping insertion in model container [2020-10-27 16:02:53,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:02:53" (3/3) ... [2020-10-27 16:02:53,507 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label45.c [2020-10-27 16:02:53,521 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:02:53,535 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:02:53,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:02:53,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:02:53,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:02:53,587 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:02:53,587 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:02:53,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:02:53,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:02:53,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:02:53,588 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:02:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 16:02:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2020-10-27 16:02:53,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:02:53,692 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] [2020-10-27 16:02:53,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:02:53,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:02:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash -904691336, now seen corresponding path program 1 times [2020-10-27 16:02:53,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:02:53,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458684276] [2020-10-27 16:02:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:02:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:59,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-27 16:02:59,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-27 16:02:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:02:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:02:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-27 16:02:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:03:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:00,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:00,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:00,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:00,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 16:03:00,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:00,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:03:00,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:03:01,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458684276] [2020-10-27 16:03:01,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:03:01,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:03:01,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504273975] [2020-10-27 16:03:01,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:03:01,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:01,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:03:01,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:03:01,439 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-27 16:03:01,623 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:03:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:03:13,110 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-27 16:03:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:03:13,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 779 [2020-10-27 16:03:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:03:13,169 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 16:03:13,169 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 16:03:13,180 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 [2020-10-27 16:03:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 16:03:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-27 16:03:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-27 16:03:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2974 transitions. [2020-10-27 16:03:13,342 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2974 transitions. Word has length 779 [2020-10-27 16:03:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:03:13,344 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2974 transitions. [2020-10-27 16:03:13,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:03:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2974 transitions. [2020-10-27 16:03:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2020-10-27 16:03:13,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:03:13,374 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] [2020-10-27 16:03:13,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:03:13,374 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:03:13,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:03:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash 937001907, now seen corresponding path program 1 times [2020-10-27 16:03:13,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:03:13,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989033233] [2020-10-27 16:03:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:03:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:18,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-27 16:03:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:03:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-27 16:03:18,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:03:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:03:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-27 16:03:18,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:03:19,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:19,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:03:19,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 16:03:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:03:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:19,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:19,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:03:19,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:19,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 16:03:19,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:19,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:03:19,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:03:19,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989033233] [2020-10-27 16:03:19,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:03:19,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:03:19,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583599509] [2020-10-27 16:03:19,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:03:19,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:19,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:03:19,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:03:19,969 INFO L87 Difference]: Start difference. First operand 1688 states and 2974 transitions. Second operand 5 states. [2020-10-27 16:03:20,188 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:03:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:03:30,965 INFO L93 Difference]: Finished difference Result 5079 states and 9013 transitions. [2020-10-27 16:03:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:03:30,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 788 [2020-10-27 16:03:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:03:30,994 INFO L225 Difference]: With dead ends: 5079 [2020-10-27 16:03:30,995 INFO L226 Difference]: Without dead ends: 3397 [2020-10-27 16:03:31,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:03:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2020-10-27 16:03:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3380. [2020-10-27 16:03:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2020-10-27 16:03:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5209 transitions. [2020-10-27 16:03:31,121 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5209 transitions. Word has length 788 [2020-10-27 16:03:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:03:31,123 INFO L481 AbstractCegarLoop]: Abstraction has 3380 states and 5209 transitions. [2020-10-27 16:03:31,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:03:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5209 transitions. [2020-10-27 16:03:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-27 16:03:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:03:31,158 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] [2020-10-27 16:03:31,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:03:31,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:03:31,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:03:31,159 INFO L82 PathProgramCache]: Analyzing trace with hash 235891246, now seen corresponding path program 1 times [2020-10-27 16:03:31,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:03:31,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52561606] [2020-10-27 16:03:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:03:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:36,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:36,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-27 16:03:36,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:03:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-27 16:03:36,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:03:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 16:03:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-27 16:03:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:36,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:36,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:36,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:03:36,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:36,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:36,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:03:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:37,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:37,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 16:03:37,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 16:03:37,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 16:03:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:03:37,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52561606] [2020-10-27 16:03:37,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:03:37,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:03:37,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455833901] [2020-10-27 16:03:37,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:03:37,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:37,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:03:37,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:03:37,676 INFO L87 Difference]: Start difference. First operand 3380 states and 5209 transitions. Second operand 6 states. [2020-10-27 16:03:37,823 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:03:38,164 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 16:03:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:03:55,162 INFO L93 Difference]: Finished difference Result 13516 states and 21188 transitions. [2020-10-27 16:03:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:03:55,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 799 [2020-10-27 16:03:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:03:55,225 INFO L225 Difference]: With dead ends: 13516 [2020-10-27 16:03:55,225 INFO L226 Difference]: Without dead ends: 10142 [2020-10-27 16:03:55,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:03:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10142 states. [2020-10-27 16:03:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10142 to 9289. [2020-10-27 16:03:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9289 states. [2020-10-27 16:03:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 12794 transitions. [2020-10-27 16:03:55,521 INFO L78 Accepts]: Start accepts. Automaton has 9289 states and 12794 transitions. Word has length 799 [2020-10-27 16:03:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:03:55,523 INFO L481 AbstractCegarLoop]: Abstraction has 9289 states and 12794 transitions. [2020-10-27 16:03:55,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:03:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 9289 states and 12794 transitions. [2020-10-27 16:03:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-27 16:03:55,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:03:55,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:03:55,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:03:55,555 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:03:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:03:55,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1909151898, now seen corresponding path program 1 times [2020-10-27 16:03:55,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:03:55,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848521006] [2020-10-27 16:03:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:03:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:55,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:00,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 877 [2020-10-27 16:04:00,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:04:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 16:04:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:04:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 16:04:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-27 16:04:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:02,768 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-27 16:04:03,129 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-27 16:04:03,274 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-27 16:04:03,612 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-27 16:04:03,759 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-27 16:04:04,192 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:04:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:04:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:04,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:04,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:04:04,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:04:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 16:04:04,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:04:04,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:04:04,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:04:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:04:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:04:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:04,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:04,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 16:04:04,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:04:04,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 16:04:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:04:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:04:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 16:04:04,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:04:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:04:12,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848521006] [2020-10-27 16:04:12,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:04:12,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 16:04:12,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145452025] [2020-10-27 16:04:12,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:04:12,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:04:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:04:12,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:04:12,065 INFO L87 Difference]: Start difference. First operand 9289 states and 12794 transitions. Second operand 18 states. [2020-10-27 16:04:13,159 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-27 16:04:13,404 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-27 16:04:13,838 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-27 16:04:14,376 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2020-10-27 16:04:21,148 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-27 16:04:21,712 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 151 [2020-10-27 16:04:26,260 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 148 [2020-10-27 16:04:27,579 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 145 [2020-10-27 16:04:29,460 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 123 [2020-10-27 16:04:29,934 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 137 [2020-10-27 16:04:30,587 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2020-10-27 16:04:34,782 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-27 16:04:35,506 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 126 [2020-10-27 16:04:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:04:38,115 INFO L93 Difference]: Finished difference Result 19252 states and 27016 transitions. [2020-10-27 16:04:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 16:04:38,116 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 859 [2020-10-27 16:04:38,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:04:38,160 INFO L225 Difference]: With dead ends: 19252 [2020-10-27 16:04:38,160 INFO L226 Difference]: Without dead ends: 9969 [2020-10-27 16:04:38,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2020-10-27 16:04:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2020-10-27 16:04:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9952. [2020-10-27 16:04:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9952 states. [2020-10-27 16:04:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9952 states to 9952 states and 13475 transitions. [2020-10-27 16:04:38,436 INFO L78 Accepts]: Start accepts. Automaton has 9952 states and 13475 transitions. Word has length 859 [2020-10-27 16:04:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:04:38,437 INFO L481 AbstractCegarLoop]: Abstraction has 9952 states and 13475 transitions. [2020-10-27 16:04:38,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:04:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 9952 states and 13475 transitions. [2020-10-27 16:04:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2020-10-27 16:04:38,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:04:38,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:04:38,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:04:38,470 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:04:38,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:04:38,471 INFO L82 PathProgramCache]: Analyzing trace with hash -299515196, now seen corresponding path program 1 times [2020-10-27 16:04:38,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:04:38,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289579423] [2020-10-27 16:04:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:04:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:41,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:43,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:43,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 887 [2020-10-27 16:04:43,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:04:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-27 16:04:43,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:04:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 16:04:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 847 [2020-10-27 16:04:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:44,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:04:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:44,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:04:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:04:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:04:44,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:04:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:04:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:04:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:04:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:44,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:44,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:44,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:04:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:04:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 16:04:44,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:04:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:04:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 16:04:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:44,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 16:04:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:44,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:04:44,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 16:04:44,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:04:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 16:04:44,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:04:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:04:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:04:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 16:04:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:04:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 99 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 16:04:45,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289579423] [2020-10-27 16:04:45,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:04:45,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:04:45,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134823175] [2020-10-27 16:04:45,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:04:45,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:04:45,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:04:45,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:04:45,575 INFO L87 Difference]: Start difference. First operand 9952 states and 13475 transitions. Second operand 6 states. [2020-10-27 16:04:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:04:57,032 INFO L93 Difference]: Finished difference Result 26735 states and 37783 transitions. [2020-10-27 16:04:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 16:04:57,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 867 [2020-10-27 16:04:57,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:04:57,102 INFO L225 Difference]: With dead ends: 26735 [2020-10-27 16:04:57,103 INFO L226 Difference]: Without dead ends: 16789 [2020-10-27 16:04:57,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:04:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16789 states. [2020-10-27 16:04:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16789 to 16773. [2020-10-27 16:04:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16773 states. [2020-10-27 16:04:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16773 states to 16773 states and 22076 transitions. [2020-10-27 16:04:57,575 INFO L78 Accepts]: Start accepts. Automaton has 16773 states and 22076 transitions. Word has length 867 [2020-10-27 16:04:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:04:57,576 INFO L481 AbstractCegarLoop]: Abstraction has 16773 states and 22076 transitions. [2020-10-27 16:04:57,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:04:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 16773 states and 22076 transitions. [2020-10-27 16:04:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2020-10-27 16:04:57,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:04:57,628 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:04:57,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:04:57,629 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:04:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:04:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2067419376, now seen corresponding path program 1 times [2020-10-27 16:04:57,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:04:57,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645075865] [2020-10-27 16:04:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:04:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:04:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:04:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:02,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 16:05:02,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:05:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:03,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:03,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:05:03,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:05:03,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:05:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:05:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:05:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:03,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:03,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:05:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:05:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:05:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 16:05:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 16:05:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:03,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:03,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 16:05:03,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:03,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 16:05:03,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:05:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:05:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 16:05:03,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:05:03,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645075865] [2020-10-27 16:05:03,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:05:03,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:05:03,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475339701] [2020-10-27 16:05:03,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:05:03,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:05:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:05:03,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:05:03,846 INFO L87 Difference]: Start difference. First operand 16773 states and 22076 transitions. Second operand 7 states. [2020-10-27 16:05:03,977 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:05:06,681 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:05:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:05:17,603 INFO L93 Difference]: Finished difference Result 48834 states and 65587 transitions. [2020-10-27 16:05:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 16:05:17,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 905 [2020-10-27 16:05:17,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:05:17,715 INFO L225 Difference]: With dead ends: 48834 [2020-10-27 16:05:17,715 INFO L226 Difference]: Without dead ends: 29538 [2020-10-27 16:05:17,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:05:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29538 states. [2020-10-27 16:05:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29538 to 29531. [2020-10-27 16:05:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29531 states. [2020-10-27 16:05:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29531 states to 29531 states and 37750 transitions. [2020-10-27 16:05:18,412 INFO L78 Accepts]: Start accepts. Automaton has 29531 states and 37750 transitions. Word has length 905 [2020-10-27 16:05:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:05:18,413 INFO L481 AbstractCegarLoop]: Abstraction has 29531 states and 37750 transitions. [2020-10-27 16:05:18,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:05:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 29531 states and 37750 transitions. [2020-10-27 16:05:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-27 16:05:18,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:05:18,487 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:05:18,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 16:05:18,488 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:05:18,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:05:18,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1758073022, now seen corresponding path program 1 times [2020-10-27 16:05:18,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:05:18,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656151786] [2020-10-27 16:05:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:05:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:19,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:23,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:23,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-27 16:05:23,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:05:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 16:05:23,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:05:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 16:05:23,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 16:05:23,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:05:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:23,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:23,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:05:23,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 16:05:23,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:23,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:05:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:23,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:05:23,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:05:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:23,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:23,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:05:23,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 16:05:23,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:05:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:05:23,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 16:05:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:23,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:23,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:23,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 16:05:23,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 16:05:23,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:05:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:23,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 16:05:23,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:23,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 16:05:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:24,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:24,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 16:05:24,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-27 16:05:24,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:05:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:05:24,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 16:05:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 16:05:24,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656151786] [2020-10-27 16:05:24,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:05:24,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:05:24,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393346999] [2020-10-27 16:05:24,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:05:24,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:05:24,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:05:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:05:24,671 INFO L87 Difference]: Start difference. First operand 29531 states and 37750 transitions. Second operand 7 states. [2020-10-27 16:05:31,987 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:05:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:05:38,303 INFO L93 Difference]: Finished difference Result 59352 states and 77081 transitions. [2020-10-27 16:05:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 16:05:38,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 955 [2020-10-27 16:05:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:05:38,395 INFO L225 Difference]: With dead ends: 59352 [2020-10-27 16:05:38,395 INFO L226 Difference]: Without dead ends: 29827 [2020-10-27 16:05:38,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:05:38,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29827 states. [2020-10-27 16:05:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29827 to 28076. [2020-10-27 16:05:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28076 states. [2020-10-27 16:05:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 35019 transitions. [2020-10-27 16:05:39,147 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 35019 transitions. Word has length 955 [2020-10-27 16:05:39,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:05:39,147 INFO L481 AbstractCegarLoop]: Abstraction has 28076 states and 35019 transitions. [2020-10-27 16:05:39,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:05:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 35019 transitions. [2020-10-27 16:05:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2020-10-27 16:05:39,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:05:39,201 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:05:39,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 16:05:39,201 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:05:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:05:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1238572552, now seen corresponding path program 1 times [2020-10-27 16:05:39,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:05:39,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026293015] [2020-10-27 16:05:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:05:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1007 [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 16:05:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 16:05:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:44,712 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:05:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:05:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:44,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:44,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:05:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:05:44,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:05:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:05:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:44,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:05:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:44,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:44,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:05:44,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:44,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 16:05:44,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:05:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:05:44,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 16:05:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:44,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:44,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 16:05:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:05:44,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:05:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:44,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:05:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 16:05:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:44,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:44,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:44,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 16:05:44,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:44,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 16:05:44,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:05:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:05:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 16:05:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:44,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 16:05:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:05:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:05:45,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:05:45,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 16:05:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:05:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 16:05:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:05:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:05:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:05:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 16:05:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:05:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-27 16:05:45,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026293015] [2020-10-27 16:05:45,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:05:45,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:05:45,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677215325] [2020-10-27 16:05:45,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:05:45,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:05:45,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:05:45,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:05:45,605 INFO L87 Difference]: Start difference. First operand 28076 states and 35019 transitions. Second operand 7 states. [2020-10-27 16:05:46,389 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:05:47,933 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:06:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:06:07,550 INFO L93 Difference]: Finished difference Result 64168 states and 82159 transitions. [2020-10-27 16:06:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:06:07,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 983 [2020-10-27 16:06:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:06:07,658 INFO L225 Difference]: With dead ends: 64168 [2020-10-27 16:06:07,658 INFO L226 Difference]: Without dead ends: 36098 [2020-10-27 16:06:07,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:06:07,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36098 states. [2020-10-27 16:06:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36098 to 35234. [2020-10-27 16:06:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35234 states. [2020-10-27 16:06:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35234 states to 35234 states and 42080 transitions. [2020-10-27 16:06:08,493 INFO L78 Accepts]: Start accepts. Automaton has 35234 states and 42080 transitions. Word has length 983 [2020-10-27 16:06:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:06:08,493 INFO L481 AbstractCegarLoop]: Abstraction has 35234 states and 42080 transitions. [2020-10-27 16:06:08,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:06:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 35234 states and 42080 transitions. [2020-10-27 16:06:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-27 16:06:08,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:06:08,572 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:06:08,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 16:06:08,573 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:06:08,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:06:08,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2087285481, now seen corresponding path program 1 times [2020-10-27 16:06:08,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:06:08,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750953108] [2020-10-27 16:06:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:06:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:12,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:13,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:13,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-27 16:06:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:06:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-27 16:06:13,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:06:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-10-27 16:06:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 783 [2020-10-27 16:06:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:14,337 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:06:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:06:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:06:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:06:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:06:14,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:06:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:06:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:06:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:06:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:14,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:06:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:14,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 16:06:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:06:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:06:14,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:06:14,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 16:06:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:06:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 16:06:14,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:06:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:06:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:06:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 16:06:14,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:06:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 16:06:15,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750953108] [2020-10-27 16:06:15,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:06:15,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:06:15,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033530300] [2020-10-27 16:06:15,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:06:15,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:06:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:06:15,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:06:15,306 INFO L87 Difference]: Start difference. First operand 35234 states and 42080 transitions. Second operand 5 states. [2020-10-27 16:06:15,702 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93