/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/Problem06_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:31:22,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:31:22,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:31:22,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:31:22,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:31:22,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:31:22,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:31:22,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:31:22,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:31:22,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:31:22,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:31:22,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:31:22,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:31:22,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:31:22,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:31:22,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:31:22,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:31:22,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:31:22,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:31:22,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:31:22,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:31:22,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:31:22,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:31:22,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:31:22,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:31:22,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:31:22,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:31:22,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:31:22,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:31:22,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:31:22,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:31:22,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:31:22,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:31:22,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:31:22,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:31:22,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:31:22,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:31:22,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:31:22,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:31:22,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:31:22,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:31:22,798 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 16:31:22,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:31:22,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:31:22,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:31:22,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:31:22,826 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:31:22,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:31:22,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:31:22,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:31:22,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:31:22,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:31:22,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:31:22,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:31:22,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:31:22,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:31:22,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:31:22,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:31:22,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:31:22,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:31:22,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:31:22,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:31:22,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:31:22,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:31:22,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:31:22,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:31:22,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:31:22,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:31:22,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:31:22,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:31:22,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:31:22,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:31:23,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:31:23,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:31:23,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:31:23,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:31:23,248 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:31:23,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label33.c [2020-10-27 16:31:23,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56e2d4742/8ca72f6d49fc418280461596b461517b/FLAG0348dc6ce [2020-10-27 16:31:24,456 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:31:24,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label33.c [2020-10-27 16:31:24,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56e2d4742/8ca72f6d49fc418280461596b461517b/FLAG0348dc6ce [2020-10-27 16:31:24,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56e2d4742/8ca72f6d49fc418280461596b461517b [2020-10-27 16:31:24,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:31:24,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:31:24,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:31:24,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:31:24,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:31:24,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:31:24" (1/1) ... [2020-10-27 16:31:24,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da297ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:24, skipping insertion in model container [2020-10-27 16:31:24,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:31:24" (1/1) ... [2020-10-27 16:31:24,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:31:24,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:31:27,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:31:27,053 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:31:28,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:31:28,189 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:31:28,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28 WrapperNode [2020-10-27 16:31:28,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:31:28,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:31:28,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:31:28,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:31:28,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (1/1) ... [2020-10-27 16:31:28,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (1/1) ... [2020-10-27 16:31:28,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (1/1) ... [2020-10-27 16:31:28,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (1/1) ... [2020-10-27 16:31:28,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (1/1) ... [2020-10-27 16:31:28,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (1/1) ... [2020-10-27 16:31:28,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (1/1) ... [2020-10-27 16:31:28,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:31:28,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:31:28,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:31:28,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:31:28,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (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 16:31:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:31:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:31:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:31:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:31:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:31:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:31:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:31:28,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:31:28,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:31:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:31:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:31:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:31:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:31:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:31:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:31:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:31:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:31:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:31:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:31:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:31:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:31:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:31:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:31:36,553 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:31:36,553 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:31:36,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:31:36 BoogieIcfgContainer [2020-10-27 16:31:36,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:31:36,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:31:36,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:31:36,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:31:36,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:31:24" (1/3) ... [2020-10-27 16:31:36,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645bd305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:31:36, skipping insertion in model container [2020-10-27 16:31:36,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:31:28" (2/3) ... [2020-10-27 16:31:36,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645bd305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:31:36, skipping insertion in model container [2020-10-27 16:31:36,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:31:36" (3/3) ... [2020-10-27 16:31:36,572 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label33.c [2020-10-27 16:31:36,583 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:31:36,590 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:31:36,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:31:36,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:31:36,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:31:36,653 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:31:36,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:31:36,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:31:36,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:31:36,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:31:36,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:31:36,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:31:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-27 16:31:36,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:31:36,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:31:36,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:31:36,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:31:36,781 INFO L82 PathProgramCache]: Analyzing trace with hash -773050636, now seen corresponding path program 1 times [2020-10-27 16:31:36,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:31:36,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508355909] [2020-10-27 16:31:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:31:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:43,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:43,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-27 16:31:43,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:31:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-27 16:31:43,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:31:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:31:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:31:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:31:46,216 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:31:46,456 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:31:46,719 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-27 16:31:46,954 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-27 16:31:47,188 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:31:47,427 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:31:47,650 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-27 16:31:47,857 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 16:31:48,074 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 16:31:48,285 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-27 16:31:48,973 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:31:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:31:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:49,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:49,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:31:49,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 16:31:49,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:31:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:31:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:02,069 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 16:32:02,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508355909] [2020-10-27 16:32:02,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:32:02,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:32:02,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707323038] [2020-10-27 16:32:02,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:32:02,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:32:02,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:32:02,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:32:02,096 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:32:02,641 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 16:32:03,623 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 196 [2020-10-27 16:32:04,600 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 196 [2020-10-27 16:32:05,654 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 204 [2020-10-27 16:32:09,987 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 235 DAG size of output: 203 [2020-10-27 16:32:14,044 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 238 DAG size of output: 202 [2020-10-27 16:32:16,927 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 193 [2020-10-27 16:32:17,999 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 199 [2020-10-27 16:32:19,334 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 198 [2020-10-27 16:32:29,722 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 191 [2020-10-27 16:32:30,739 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 196 [2020-10-27 16:32:34,072 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 195 [2020-10-27 16:32:42,125 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 189 [2020-10-27 16:32:43,142 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 193 [2020-10-27 16:32:45,971 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 191 [2020-10-27 16:32:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:32:59,181 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:32:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:32:59,184 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 963 [2020-10-27 16:32:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:32:59,232 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:32:59,232 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:32:59,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:32:59,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:32:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:32:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:32:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:32:59,418 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 963 [2020-10-27 16:32:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:32:59,421 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:32:59,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:32:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:32:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2020-10-27 16:32:59,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:59,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:59,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:32:59,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:59,500 INFO L82 PathProgramCache]: Analyzing trace with hash -901539189, now seen corresponding path program 1 times [2020-10-27 16:32:59,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:59,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454498334] [2020-10-27 16:32:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:32:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:04,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1053 [2020-10-27 16:33:04,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:33:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 16:33:04,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:33:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:33:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 969 [2020-10-27 16:33:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:06,083 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:33:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:33:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:06,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:33:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:33:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:33:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:33:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:06,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:33:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:06,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:06,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:33:06,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 16:33:06,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:33:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:33:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:33:07,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454498334] [2020-10-27 16:33:07,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:33:07,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:33:07,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984569843] [2020-10-27 16:33:07,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:33:07,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:33:07,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:33:07,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:33:07,398 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 5 states. [2020-10-27 16:33:07,998 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:33:25,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:33:25,212 INFO L93 Difference]: Finished difference Result 4399 states and 7437 transitions. [2020-10-27 16:33:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:33:25,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1033 [2020-10-27 16:33:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:33:25,236 INFO L225 Difference]: With dead ends: 4399 [2020-10-27 16:33:25,236 INFO L226 Difference]: Without dead ends: 3139 [2020-10-27 16:33:25,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:33:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-10-27 16:33:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3088. [2020-10-27 16:33:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3088 states. [2020-10-27 16:33:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4567 transitions. [2020-10-27 16:33:25,364 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4567 transitions. Word has length 1033 [2020-10-27 16:33:25,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:33:25,367 INFO L481 AbstractCegarLoop]: Abstraction has 3088 states and 4567 transitions. [2020-10-27 16:33:25,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:33:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4567 transitions. [2020-10-27 16:33:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2020-10-27 16:33:25,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:33:25,417 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:25,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:33:25,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:33:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:33:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1390006371, now seen corresponding path program 1 times [2020-10-27 16:33:25,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:33:25,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806076439] [2020-10-27 16:33:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:33:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:30,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:30,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1064 [2020-10-27 16:33:30,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:33:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-27 16:33:30,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:33:30,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:33:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:33:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:31,294 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:33:31,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:33:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:31,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:31,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:33:31,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:33:31,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:33:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:33:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:33:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:31,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:31,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:31,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:33:31,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:31,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 16:33:31,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:33:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:33:31,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:33:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:31,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:31,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:33:31,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 16:33:31,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:33:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:33:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:33:31,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:33:32,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806076439] [2020-10-27 16:33:32,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:33:32,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:33:32,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698039548] [2020-10-27 16:33:32,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:33:32,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:33:32,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:33:32,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:33:32,303 INFO L87 Difference]: Start difference. First operand 3088 states and 4567 transitions. Second operand 7 states. [2020-10-27 16:33:32,937 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:33:33,955 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:33:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:33:54,906 INFO L93 Difference]: Finished difference Result 7721 states and 12250 transitions. [2020-10-27 16:33:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:33:54,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1042 [2020-10-27 16:33:54,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:33:54,944 INFO L225 Difference]: With dead ends: 7721 [2020-10-27 16:33:54,944 INFO L226 Difference]: Without dead ends: 5393 [2020-10-27 16:33:54,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:33:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2020-10-27 16:33:55,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5336. [2020-10-27 16:33:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5336 states. [2020-10-27 16:33:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 7456 transitions. [2020-10-27 16:33:55,159 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 7456 transitions. Word has length 1042 [2020-10-27 16:33:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:33:55,160 INFO L481 AbstractCegarLoop]: Abstraction has 5336 states and 7456 transitions. [2020-10-27 16:33:55,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:33:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 7456 transitions. [2020-10-27 16:33:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2020-10-27 16:33:55,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:33:55,188 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:55,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:33:55,188 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:33:55,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:33:55,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1401466069, now seen corresponding path program 1 times [2020-10-27 16:33:55,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:33:55,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150466990] [2020-10-27 16:33:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:33:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:00,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:00,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1068 [2020-10-27 16:34:00,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:34:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 16:34:00,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:34:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:34:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:00,802 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:34:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:34:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:00,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:00,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:34:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:34:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:34:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:01,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:01,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:34:01,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:01,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 16:34:01,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:34:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:34:01,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:01,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:34:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:34:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 16:34:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:34:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 16:34:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:34:01,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150466990] [2020-10-27 16:34:01,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:34:01,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:34:01,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100505123] [2020-10-27 16:34:01,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:34:01,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:34:01,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:34:01,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:34:01,712 INFO L87 Difference]: Start difference. First operand 5336 states and 7456 transitions. Second operand 7 states. [2020-10-27 16:34:02,462 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 16:34:03,490 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 16:34:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:34:22,718 INFO L93 Difference]: Finished difference Result 12434 states and 17683 transitions. [2020-10-27 16:34:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 16:34:22,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1046 [2020-10-27 16:34:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:34:22,759 INFO L225 Difference]: With dead ends: 12434 [2020-10-27 16:34:22,759 INFO L226 Difference]: Without dead ends: 7858 [2020-10-27 16:34:22,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:34:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2020-10-27 16:34:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 7646. [2020-10-27 16:34:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7646 states. [2020-10-27 16:34:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 10269 transitions. [2020-10-27 16:34:23,007 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 10269 transitions. Word has length 1046 [2020-10-27 16:34:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:34:23,008 INFO L481 AbstractCegarLoop]: Abstraction has 7646 states and 10269 transitions. [2020-10-27 16:34:23,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:34:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 10269 transitions. [2020-10-27 16:34:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2020-10-27 16:34:23,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:34:23,043 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:23,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:34:23,043 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:34:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:34:23,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1352491526, now seen corresponding path program 1 times [2020-10-27 16:34:23,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:34:23,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818434649] [2020-10-27 16:34:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:34:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:23,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:28,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1071 [2020-10-27 16:34:28,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:34:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-27 16:34:28,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:34:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 16:34:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 970 [2020-10-27 16:34:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:29,486 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:34:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:34:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:29,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:29,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:29,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:34:29,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:29,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:34:29,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:29,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:34:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:29,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:29,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:34:29,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 16:34:29,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:29,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:29,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:34:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:29,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:29,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:34:29,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 16:34:29,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:34:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:34:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 16:34:31,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818434649] [2020-10-27 16:34:31,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:34:31,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:34:31,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060824402] [2020-10-27 16:34:31,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:34:31,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:34:31,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:34:31,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:34:31,151 INFO L87 Difference]: Start difference. First operand 7646 states and 10269 transitions. Second operand 5 states. [2020-10-27 16:34:31,411 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 16:34:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:34:49,285 INFO L93 Difference]: Finished difference Result 21113 states and 29905 transitions. [2020-10-27 16:34:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:34:49,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1049 [2020-10-27 16:34:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:34:49,357 INFO L225 Difference]: With dead ends: 21113 [2020-10-27 16:34:49,357 INFO L226 Difference]: Without dead ends: 14227 [2020-10-27 16:34:49,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:34:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14227 states. [2020-10-27 16:34:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14227 to 14134. [2020-10-27 16:34:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14134 states. [2020-10-27 16:34:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14134 states to 14134 states and 19229 transitions. [2020-10-27 16:34:49,753 INFO L78 Accepts]: Start accepts. Automaton has 14134 states and 19229 transitions. Word has length 1049 [2020-10-27 16:34:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:34:49,755 INFO L481 AbstractCegarLoop]: Abstraction has 14134 states and 19229 transitions. [2020-10-27 16:34:49,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:34:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 14134 states and 19229 transitions. [2020-10-27 16:34:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-27 16:34:49,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:34:49,927 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:49,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:34:49,927 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:34:49,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:34:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1781732329, now seen corresponding path program 1 times [2020-10-27 16:34:49,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:34:49,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367054950] [2020-10-27 16:34:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:34:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:50,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5287 [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 16:34:55,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 16:34:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:55,768 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:34:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:34:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:55,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:55,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:34:55,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:55,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:34:55,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:55,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:55,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:55,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:55,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:34:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:55,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:55,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:34:55,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 16:34:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:34:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:55,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:55,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:55,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:34:55,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 16:34:55,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:34:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 16:34:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:55,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 16:34:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:55,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 16:34:56,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 16:34:56,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:34:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 16:34:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 16:34:56,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367054950] [2020-10-27 16:34:56,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:34:56,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:34:56,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626442610] [2020-10-27 16:34:56,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:34:56,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:34:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:34:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:34:56,645 INFO L87 Difference]: Start difference. First operand 14134 states and 19229 transitions. Second operand 7 states. [2020-10-27 16:34:56,898 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:34:59,203 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 159