/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:40:13,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:40:13,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:40:13,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:40:13,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:40:13,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:40:13,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:40:13,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:40:13,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:40:13,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:40:13,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:40:13,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:40:13,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:40:13,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:40:13,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:40:13,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:40:13,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:40:13,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:40:13,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:40:13,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:40:13,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:40:13,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:40:13,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:40:13,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:40:13,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:40:13,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:40:13,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:40:13,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:40:13,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:40:13,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:40:13,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:40:13,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:40:13,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:40:13,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:40:13,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:40:13,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:40:13,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:40:13,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:40:13,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:40:13,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:40:13,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:40:13,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:40:13,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:40:13,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:40:13,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:40:13,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:40:13,799 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:40:13,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:40:13,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:40:13,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:40:13,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:40:13,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:40:13,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:40:13,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:40:13,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:40:13,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:40:13,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:40:13,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:40:13,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:40:13,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:40:13,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:40:13,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:40:13,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:40:13,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:40:13,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:40:13,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:40:13,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:40:13,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:40:13,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:40:13,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:40:13,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:40:13,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:40:14,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:40:14,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:40:14,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:40:14,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:40:14,238 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:40:14,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43.c [2020-10-28 12:40:14,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/712b8ee51/3513ee845e024d4aaf2799b6da93be8c/FLAG2e89f6fb3 [2020-10-28 12:40:15,475 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:40:15,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label43.c [2020-10-28 12:40:15,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/712b8ee51/3513ee845e024d4aaf2799b6da93be8c/FLAG2e89f6fb3 [2020-10-28 12:40:15,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/712b8ee51/3513ee845e024d4aaf2799b6da93be8c [2020-10-28 12:40:15,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:40:15,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:40:15,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:40:15,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:40:15,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:40:15,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:40:15" (1/1) ... [2020-10-28 12:40:15,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e24083e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:15, skipping insertion in model container [2020-10-28 12:40:15,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:40:15" (1/1) ... [2020-10-28 12:40:15,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:40:16,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:40:17,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:40:17,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:40:18,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:40:18,629 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:40:18,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18 WrapperNode [2020-10-28 12:40:18,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:40:18,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:40:18,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:40:18,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:40:18,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... [2020-10-28 12:40:18,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... [2020-10-28 12:40:18,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... [2020-10-28 12:40:18,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... [2020-10-28 12:40:18,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... [2020-10-28 12:40:18,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... [2020-10-28 12:40:19,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... [2020-10-28 12:40:19,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:40:19,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:40:19,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:40:19,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:40:19,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:40:19,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:40:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:40:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:40:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:40:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:40:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:40:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:40:19,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:40:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:40:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:40:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:40:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:40:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:40:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:40:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:40:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:40:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:40:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:40:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:40:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:40:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:40:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:40:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:40:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:40:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:40:31,081 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:40:31,083 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:40:31,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:40:31 BoogieIcfgContainer [2020-10-28 12:40:31,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:40:31,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:40:31,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:40:31,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:40:31,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:40:15" (1/3) ... [2020-10-28 12:40:31,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fb032c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:40:31, skipping insertion in model container [2020-10-28 12:40:31,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:18" (2/3) ... [2020-10-28 12:40:31,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fb032c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:40:31, skipping insertion in model container [2020-10-28 12:40:31,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:40:31" (3/3) ... [2020-10-28 12:40:31,101 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label43.c [2020-10-28 12:40:31,111 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:40:31,116 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:40:31,128 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:40:31,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:40:31,163 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:40:31,163 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:40:31,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:40:31,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:40:31,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:40:31,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:40:31,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:40:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:40:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 12:40:31,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:31,211 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] [2020-10-28 12:40:31,211 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:31,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:31,218 INFO L82 PathProgramCache]: Analyzing trace with hash -712398662, now seen corresponding path program 1 times [2020-10-28 12:40:31,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:31,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111200867] [2020-10-28 12:40:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:32,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:32,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 12:40:32,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:32,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-28 12:40:32,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:32,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:40:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:40:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 12:40:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:40:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:32,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:32,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:32,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:32,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:40:32,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:32,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:40:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:40:32,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111200867] [2020-10-28 12:40:32,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:40:32,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:40:32,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773682077] [2020-10-28 12:40:32,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:40:32,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:32,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:40:32,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:40:32,304 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:40:32,529 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:40:57,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:40:57,287 INFO L93 Difference]: Finished difference Result 3248 states and 5954 transitions. [2020-10-28 12:40:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:40:57,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 12:40:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:40:57,327 INFO L225 Difference]: With dead ends: 3248 [2020-10-28 12:40:57,327 INFO L226 Difference]: Without dead ends: 2046 [2020-10-28 12:40:57,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:40:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-10-28 12:40:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1989. [2020-10-28 12:40:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2020-10-28 12:40:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 3534 transitions. [2020-10-28 12:40:57,548 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 3534 transitions. Word has length 25 [2020-10-28 12:40:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:40:57,550 INFO L481 AbstractCegarLoop]: Abstraction has 1989 states and 3534 transitions. [2020-10-28 12:40:57,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:40:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 3534 transitions. [2020-10-28 12:40:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 12:40:57,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:40:57,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:40:57,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:40:57,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:40:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:40:57,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1852529461, now seen corresponding path program 1 times [2020-10-28 12:40:57,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:40:57,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985952167] [2020-10-28 12:40:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:40:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:58,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:59,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:59,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:40:59,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:40:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-28 12:40:59,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:59,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:40:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:40:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:40:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:40:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:40:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:59,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:59,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:40:59,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:40:59,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:59,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:40:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:40:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:40:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:40:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:40:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:40:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:40:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:40:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:40:59,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:40:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 12:40:59,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:40:59,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:40:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:40:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:40:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:40:59,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:40:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:40:59,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985952167] [2020-10-28 12:40:59,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:40:59,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:40:59,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396506387] [2020-10-28 12:40:59,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:40:59,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:40:59,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:40:59,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:40:59,639 INFO L87 Difference]: Start difference. First operand 1989 states and 3534 transitions. Second operand 7 states. [2020-10-28 12:40:59,790 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:41:00,780 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:41:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:41:33,871 INFO L93 Difference]: Finished difference Result 5896 states and 10567 transitions. [2020-10-28 12:41:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:41:33,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-28 12:41:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:41:33,909 INFO L225 Difference]: With dead ends: 5896 [2020-10-28 12:41:33,909 INFO L226 Difference]: Without dead ends: 3913 [2020-10-28 12:41:33,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:41:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2020-10-28 12:41:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 3827. [2020-10-28 12:41:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3827 states. [2020-10-28 12:41:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 6204 transitions. [2020-10-28 12:41:34,067 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 6204 transitions. Word has length 94 [2020-10-28 12:41:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:41:34,067 INFO L481 AbstractCegarLoop]: Abstraction has 3827 states and 6204 transitions. [2020-10-28 12:41:34,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:41:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 6204 transitions. [2020-10-28 12:41:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 12:41:34,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:41:34,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:41:34,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:41:34,071 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:41:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:41:34,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1196248097, now seen corresponding path program 1 times [2020-10-28 12:41:34,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:41:34,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413824492] [2020-10-28 12:41:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:41:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:35,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 12:41:35,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:41:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-28 12:41:35,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:35,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:41:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:41:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:41:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:35,215 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:41:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:41:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:41:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:41:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:35,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:41:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:41:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:41:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:41:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:41:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:41:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:41:35,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:41:35,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:41:35,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:41:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:41:35,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:41:35,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:41:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:41:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:41:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:41:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:41:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:41:35,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413824492] [2020-10-28 12:41:35,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:41:35,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:41:35,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7014661] [2020-10-28 12:41:35,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:41:35,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:41:35,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:41:35,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:41:35,658 INFO L87 Difference]: Start difference. First operand 3827 states and 6204 transitions. Second operand 7 states. [2020-10-28 12:41:35,822 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:41:37,891 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:42:05,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:42:05,042 INFO L93 Difference]: Finished difference Result 11236 states and 18485 transitions. [2020-10-28 12:42:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:42:05,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-28 12:42:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:42:05,088 INFO L225 Difference]: With dead ends: 11236 [2020-10-28 12:42:05,089 INFO L226 Difference]: Without dead ends: 7415 [2020-10-28 12:42:05,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:42:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2020-10-28 12:42:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 7224. [2020-10-28 12:42:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7224 states. [2020-10-28 12:42:05,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 10266 transitions. [2020-10-28 12:42:05,323 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 10266 transitions. Word has length 100 [2020-10-28 12:42:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:42:05,324 INFO L481 AbstractCegarLoop]: Abstraction has 7224 states and 10266 transitions. [2020-10-28 12:42:05,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:42:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 10266 transitions. [2020-10-28 12:42:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 12:42:05,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:05,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:42:05,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:42:05,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:05,328 INFO L82 PathProgramCache]: Analyzing trace with hash 400104637, now seen corresponding path program 1 times [2020-10-28 12:42:05,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:05,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684308728] [2020-10-28 12:42:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:06,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:06,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 12:42:06,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:42:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-28 12:42:06,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:06,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:42:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:42:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:42:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:06,624 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:42:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:06,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:06,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:06,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:06,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:42:06,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:06,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:06,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:42:06,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:42:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:06,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:06,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:42:06,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 12:42:06,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:06,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:42:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:42:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:42:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:42:07,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684308728] [2020-10-28 12:42:07,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:42:07,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:42:07,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480570731] [2020-10-28 12:42:07,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:42:07,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:07,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:42:07,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:42:07,091 INFO L87 Difference]: Start difference. First operand 7224 states and 10266 transitions. Second operand 7 states. [2020-10-28 12:42:07,283 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:42:09,168 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:42:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:42:35,450 INFO L93 Difference]: Finished difference Result 15641 states and 22142 transitions. [2020-10-28 12:42:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:42:35,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-28 12:42:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:42:35,500 INFO L225 Difference]: With dead ends: 15641 [2020-10-28 12:42:35,500 INFO L226 Difference]: Without dead ends: 8423 [2020-10-28 12:42:35,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:42:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8423 states. [2020-10-28 12:42:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8423 to 8148. [2020-10-28 12:42:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8148 states. [2020-10-28 12:42:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8148 states to 8148 states and 11358 transitions. [2020-10-28 12:42:35,767 INFO L78 Accepts]: Start accepts. Automaton has 8148 states and 11358 transitions. Word has length 130 [2020-10-28 12:42:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:42:35,768 INFO L481 AbstractCegarLoop]: Abstraction has 8148 states and 11358 transitions. [2020-10-28 12:42:35,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:42:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8148 states and 11358 transitions. [2020-10-28 12:42:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 12:42:35,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:42:35,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:42:35,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:42:35,771 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:42:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:42:35,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1951949455, now seen corresponding path program 1 times [2020-10-28 12:42:35,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:42:35,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269437852] [2020-10-28 12:42:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:42:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:35,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:37,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:37,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 12:42:37,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:42:37,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-28 12:42:37,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:37,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:42:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:42:37,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:42:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:42:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:42:37,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:42:37,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:37,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:42:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:42:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:42:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:37,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:42:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:42:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:42:37,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:42:37,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 12:42:37,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:42:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 12:42:37,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:42:37,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:42:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:42:37,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:42:37,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:42:37,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:42:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:42:38,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269437852] [2020-10-28 12:42:38,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:42:38,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:42:38,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183165282] [2020-10-28 12:42:38,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:42:38,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:42:38,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:42:38,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:42:38,037 INFO L87 Difference]: Start difference. First operand 8148 states and 11358 transitions. Second operand 7 states. [2020-10-28 12:42:38,237 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:42:39,718 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 12:43:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:43:09,219 INFO L93 Difference]: Finished difference Result 16660 states and 23262 transitions. [2020-10-28 12:43:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:43:09,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-28 12:43:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:43:09,263 INFO L225 Difference]: With dead ends: 16660 [2020-10-28 12:43:09,263 INFO L226 Difference]: Without dead ends: 8518 [2020-10-28 12:43:09,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:43:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2020-10-28 12:43:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8133. [2020-10-28 12:43:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8133 states. [2020-10-28 12:43:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 11265 transitions. [2020-10-28 12:43:09,495 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 11265 transitions. Word has length 140 [2020-10-28 12:43:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:43:09,495 INFO L481 AbstractCegarLoop]: Abstraction has 8133 states and 11265 transitions. [2020-10-28 12:43:09,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:43:09,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 11265 transitions. [2020-10-28 12:43:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 12:43:09,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:43:09,497 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:43:09,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:43:09,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:43:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:43:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash -137083660, now seen corresponding path program 1 times [2020-10-28 12:43:09,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:43:09,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108326131] [2020-10-28 12:43:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:43:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:09,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:10,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:10,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 12:43:10,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:43:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-28 12:43:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:10,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:43:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 12:43:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:10,648 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:43:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:43:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:10,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:10,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:10,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:43:10,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:43:10,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:10,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:43:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:43:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:43:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:43:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:10,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:10,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:10,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:43:10,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:43:10,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:10,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:43:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:43:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:43:10,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108326131] [2020-10-28 12:43:10,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:43:10,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:43:10,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868855797] [2020-10-28 12:43:10,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:43:10,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:43:10,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:43:10,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:43:10,963 INFO L87 Difference]: Start difference. First operand 8133 states and 11265 transitions. Second operand 5 states. [2020-10-28 12:43:11,119 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:43:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:43:36,855 INFO L93 Difference]: Finished difference Result 20607 states and 30135 transitions. [2020-10-28 12:43:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:43:36,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 12:43:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:43:36,903 INFO L225 Difference]: With dead ends: 20607 [2020-10-28 12:43:36,903 INFO L226 Difference]: Without dead ends: 13283 [2020-10-28 12:43:36,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:43:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13283 states. [2020-10-28 12:43:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13283 to 13220. [2020-10-28 12:43:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13220 states. [2020-10-28 12:43:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13220 states to 13220 states and 17401 transitions. [2020-10-28 12:43:37,203 INFO L78 Accepts]: Start accepts. Automaton has 13220 states and 17401 transitions. Word has length 154 [2020-10-28 12:43:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:43:37,204 INFO L481 AbstractCegarLoop]: Abstraction has 13220 states and 17401 transitions. [2020-10-28 12:43:37,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:43:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13220 states and 17401 transitions. [2020-10-28 12:43:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 12:43:37,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:43:37,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:43:37,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:43:37,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:43:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:43:37,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1906079866, now seen corresponding path program 1 times [2020-10-28 12:43:37,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:43:37,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663928301] [2020-10-28 12:43:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:43:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 12:43:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:43:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3891 [2020-10-28 12:43:41,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:43:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:43:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:41,382 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:43:41,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:43:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:43:41,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:43:41,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:43:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:43:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:43:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:43:41,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:43:41,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:43:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:43:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:43:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:43:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:43:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:43:41,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:43:41,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:43:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:43:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:43:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:43:41,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:43:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:43:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:43:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:43:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:43:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:43:42,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663928301] [2020-10-28 12:43:42,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:43:42,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:43:42,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539472582] [2020-10-28 12:43:42,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:43:42,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:43:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:43:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:43:42,053 INFO L87 Difference]: Start difference. First operand 13220 states and 17401 transitions. Second operand 7 states. [2020-10-28 12:43:42,233 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:43:45,852 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:44:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:44:21,707 INFO L93 Difference]: Finished difference Result 35339 states and 49349 transitions. [2020-10-28 12:44:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:44:21,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-28 12:44:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:44:21,777 INFO L225 Difference]: With dead ends: 35339 [2020-10-28 12:44:21,777 INFO L226 Difference]: Without dead ends: 22928 [2020-10-28 12:44:21,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:44:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22928 states. [2020-10-28 12:44:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22928 to 22806. [2020-10-28 12:44:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22806 states. [2020-10-28 12:44:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22806 states to 22806 states and 29652 transitions. [2020-10-28 12:44:22,323 INFO L78 Accepts]: Start accepts. Automaton has 22806 states and 29652 transitions. Word has length 230 [2020-10-28 12:44:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:44:22,324 INFO L481 AbstractCegarLoop]: Abstraction has 22806 states and 29652 transitions. [2020-10-28 12:44:22,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:44:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22806 states and 29652 transitions. [2020-10-28 12:44:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-28 12:44:22,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:44:22,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:44:22,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:44:22,329 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:44:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:44:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1553060709, now seen corresponding path program 1 times [2020-10-28 12:44:22,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:44:22,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953986699] [2020-10-28 12:44:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:44:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:23,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:24,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:24,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 12:44:24,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:44:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-10-28 12:44:24,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:24,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:44:24,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 12:44:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:24,650 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:44:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:44:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:24,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:24,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:44:24,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:44:24,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:24,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:24,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:44:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:24,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:44:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:24,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:24,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:44:24,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:44:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 12:44:24,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:24,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:44:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:44:25,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:44:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:25,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:44:25,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:44:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 12:44:25,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:25,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:44:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:44:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:44:25,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953986699] [2020-10-28 12:44:25,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:44:25,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:44:25,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155006565] [2020-10-28 12:44:25,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:44:25,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:44:25,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:44:25,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:44:25,385 INFO L87 Difference]: Start difference. First operand 22806 states and 29652 transitions. Second operand 6 states. [2020-10-28 12:44:25,581 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 66