/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/Problem19_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:07:42,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:07:42,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:07:42,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:07:42,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:07:42,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:07:42,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:07:42,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:07:42,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:07:42,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:07:42,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:07:42,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:07:42,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:07:42,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:07:42,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:07:42,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:07:42,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:07:42,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:07:42,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:07:42,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:07:42,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:07:42,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:07:42,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:07:42,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:07:42,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:07:42,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:07:42,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:07:42,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:07:42,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:07:42,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:07:42,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:07:42,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:07:42,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:07:42,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:07:42,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:07:42,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:07:42,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:07:42,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:07:42,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:07:42,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:07:42,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:07:42,918 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 14:07:42,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:07:42,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:07:42,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:07:42,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:07:42,951 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:07:42,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:07:42,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:07:42,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:07:42,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:07:42,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:07:42,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:07:42,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:07:42,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:07:42,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:07:42,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:07:42,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:07:42,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:07:42,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:07:42,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:07:42,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:07:42,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:07:42,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:07:42,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:07:42,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:07:42,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:07:42,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:07:42,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:07:42,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:07:42,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:07:42,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:07:43,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:07:43,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:07:43,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:07:43,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:07:43,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:07:43,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23.c [2020-10-28 14:07:43,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ba86e552/dd56726d1d464ba19c35278cb3d10376/FLAGbe6656593 [2020-10-28 14:07:44,787 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:07:44,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label23.c [2020-10-28 14:07:44,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ba86e552/dd56726d1d464ba19c35278cb3d10376/FLAGbe6656593 [2020-10-28 14:07:45,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ba86e552/dd56726d1d464ba19c35278cb3d10376 [2020-10-28 14:07:45,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:07:45,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:07:45,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:07:45,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:07:45,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:07:45,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:07:45" (1/1) ... [2020-10-28 14:07:45,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f995c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:45, skipping insertion in model container [2020-10-28 14:07:45,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:07:45" (1/1) ... [2020-10-28 14:07:45,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:07:45,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:07:47,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:07:47,518 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:07:48,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:07:48,711 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:07:48,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48 WrapperNode [2020-10-28 14:07:48,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:07:48,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:07:48,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:07:48,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:07:48,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (1/1) ... [2020-10-28 14:07:48,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (1/1) ... [2020-10-28 14:07:48,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (1/1) ... [2020-10-28 14:07:48,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (1/1) ... [2020-10-28 14:07:49,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (1/1) ... [2020-10-28 14:07:49,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (1/1) ... [2020-10-28 14:07:49,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (1/1) ... [2020-10-28 14:07:49,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:07:49,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:07:49,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:07:49,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:07:49,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (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 14:07:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:07:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:07:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:07:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:07:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:07:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:07:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:07:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:07:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:07:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:07:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:07:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:07:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:07:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:07:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:07:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:07:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:07:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:07:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:07:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:07:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:07:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:07:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:07:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:07:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:07:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:07:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:07:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:07:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:08:03,976 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:08:03,977 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:08:03,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:08:03 BoogieIcfgContainer [2020-10-28 14:08:03,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:08:03,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:08:03,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:08:03,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:08:03,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:07:45" (1/3) ... [2020-10-28 14:08:03,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fffdb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:08:03, skipping insertion in model container [2020-10-28 14:08:03,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:07:48" (2/3) ... [2020-10-28 14:08:03,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fffdb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:08:03, skipping insertion in model container [2020-10-28 14:08:03,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:08:03" (3/3) ... [2020-10-28 14:08:03,998 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label23.c [2020-10-28 14:08:04,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:08:04,019 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:08:04,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:08:04,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:08:04,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:08:04,080 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:08:04,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:08:04,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:08:04,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:08:04,081 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:08:04,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:08:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:08:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 14:08:04,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:08:04,146 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] [2020-10-28 14:08:04,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:08:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:08:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1328439110, now seen corresponding path program 1 times [2020-10-28 14:08:04,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:08:04,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709855029] [2020-10-28 14:08:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:08:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:08:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:08:05,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:08:05,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:08:05,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:08:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-28 14:08:05,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:08:05,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:08:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:08:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:08:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 14:08:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 14:08:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:08:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:08:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:08:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:08:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:08:05,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:08:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 14:08:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:08:05,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:08:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:08:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:08:05,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:08:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:08:05,410 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 14:08:05,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709855029] [2020-10-28 14:08:05,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:08:05,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:08:05,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188447023] [2020-10-28 14:08:05,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:08:05,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:08:05,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:08:05,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:08:05,450 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-28 14:08:54,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:08:54,456 INFO L93 Difference]: Finished difference Result 6577 states and 12487 transitions. [2020-10-28 14:08:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:08:54,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-28 14:08:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:08:54,528 INFO L225 Difference]: With dead ends: 6577 [2020-10-28 14:08:54,528 INFO L226 Difference]: Without dead ends: 4728 [2020-10-28 14:08:54,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:08:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-28 14:08:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4641. [2020-10-28 14:08:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4641 states. [2020-10-28 14:08:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 7459 transitions. [2020-10-28 14:08:54,850 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 7459 transitions. Word has length 59 [2020-10-28 14:08:54,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:08:54,851 INFO L481 AbstractCegarLoop]: Abstraction has 4641 states and 7459 transitions. [2020-10-28 14:08:54,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:08:54,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 7459 transitions. [2020-10-28 14:08:54,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 14:08:54,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:08:54,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:54,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:08:54,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:08:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:08:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash 937088238, now seen corresponding path program 1 times [2020-10-28 14:08:54,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:08:54,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299967192] [2020-10-28 14:08:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:08:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:08:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:08:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:08:56,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:08:56,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:08:56,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 14:08:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:08:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1848 [2020-10-28 14:08:56,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:08:56,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:08:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:08:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:08:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 14:08:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:08:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:08:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:08:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:08:56,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:08:56,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:08:56,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:08:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:08:56,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:08:56,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:08:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:08:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:08:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:08:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:08:57,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:08:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:08:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:08:57,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:08:57,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 14:08:57,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:08:57,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 14:08:57,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:08:57,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:08:57,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:08:57,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:08:57,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:08:57,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:08:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:08:57,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299967192] [2020-10-28 14:08:57,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:08:57,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:08:57,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748663863] [2020-10-28 14:08:57,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:08:57,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:08:57,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:08:57,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:08:57,291 INFO L87 Difference]: Start difference. First operand 4641 states and 7459 transitions. Second operand 7 states. [2020-10-28 14:09:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:09:39,133 INFO L93 Difference]: Finished difference Result 13864 states and 22883 transitions. [2020-10-28 14:09:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:09:39,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 14:09:39,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:09:39,204 INFO L225 Difference]: With dead ends: 13864 [2020-10-28 14:09:39,204 INFO L226 Difference]: Without dead ends: 9229 [2020-10-28 14:09:39,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:09:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9229 states. [2020-10-28 14:09:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9229 to 9009. [2020-10-28 14:09:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9009 states. [2020-10-28 14:09:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9009 states to 9009 states and 12671 transitions. [2020-10-28 14:09:39,602 INFO L78 Accepts]: Start accepts. Automaton has 9009 states and 12671 transitions. Word has length 134 [2020-10-28 14:09:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:09:39,605 INFO L481 AbstractCegarLoop]: Abstraction has 9009 states and 12671 transitions. [2020-10-28 14:09:39,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:09:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 9009 states and 12671 transitions. [2020-10-28 14:09:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 14:09:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:09:39,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:39,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:09:39,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:09:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:09:39,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1273129424, now seen corresponding path program 1 times [2020-10-28 14:09:39,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:09:39,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773584131] [2020-10-28 14:09:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:09:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:09:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:09:39,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:09:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:09:41,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:09:41,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 14:09:41,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:09:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2288 [2020-10-28 14:09:41,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:09:41,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:09:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:09:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:09:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 14:09:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:09:42,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:09:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:09:42,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:09:42,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:09:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:09:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:09:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:09:42,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:09:42,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:09:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:09:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:09:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:09:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:09:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:09:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:09:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:09:42,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:09:42,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 14:09:42,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:09:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 14:09:42,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:09:42,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:09:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:09:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:09:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 14:09:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:09:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:09:42,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773584131] [2020-10-28 14:09:42,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:09:42,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:09:42,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450909986] [2020-10-28 14:09:42,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:09:42,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:09:42,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:09:42,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:09:42,654 INFO L87 Difference]: Start difference. First operand 9009 states and 12671 transitions. Second operand 7 states. [2020-10-28 14:10:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:10:45,825 INFO L93 Difference]: Finished difference Result 27344 states and 39339 transitions. [2020-10-28 14:10:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:10:45,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-28 14:10:45,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:10:45,932 INFO L225 Difference]: With dead ends: 27344 [2020-10-28 14:10:45,935 INFO L226 Difference]: Without dead ends: 18341 [2020-10-28 14:10:45,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:10:45,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18341 states. [2020-10-28 14:10:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18341 to 18016. [2020-10-28 14:10:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18016 states. [2020-10-28 14:10:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18016 states to 18016 states and 23385 transitions. [2020-10-28 14:10:46,550 INFO L78 Accepts]: Start accepts. Automaton has 18016 states and 23385 transitions. Word has length 160 [2020-10-28 14:10:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:10:46,553 INFO L481 AbstractCegarLoop]: Abstraction has 18016 states and 23385 transitions. [2020-10-28 14:10:46,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:10:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 18016 states and 23385 transitions. [2020-10-28 14:10:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 14:10:46,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:10:46,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:46,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:10:46,571 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:10:46,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:10:46,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1508887684, now seen corresponding path program 1 times [2020-10-28 14:10:46,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:10:46,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705229448] [2020-10-28 14:10:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:10:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:10:46,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:47,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:48,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:10:48,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 14:10:48,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:10:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2203 [2020-10-28 14:10:48,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:10:48,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:10:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:10:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-28 14:10:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:10:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:10:49,050 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:10:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:10:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:10:49,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:10:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:10:49,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:10:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:10:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:10:49,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:10:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:10:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:10:49,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:10:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:10:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:10:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:10:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:10:49,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:10:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 14:10:49,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:10:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 14:10:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:10:49,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:10:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:10:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 14:10:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:10:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:10:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:10:49,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705229448] [2020-10-28 14:10:49,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:10:49,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:10:49,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456381248] [2020-10-28 14:10:49,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:10:49,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:10:49,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:10:49,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:10:49,404 INFO L87 Difference]: Start difference. First operand 18016 states and 23385 transitions. Second operand 5 states. [2020-10-28 14:10:49,566 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 14:11:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:11:47,365 INFO L93 Difference]: Finished difference Result 53172 states and 71135 transitions. [2020-10-28 14:11:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:11:47,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-28 14:11:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:11:47,495 INFO L225 Difference]: With dead ends: 53172 [2020-10-28 14:11:47,495 INFO L226 Difference]: Without dead ends: 35162 [2020-10-28 14:11:47,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:11:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35162 states. [2020-10-28 14:11:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35162 to 35120. [2020-10-28 14:11:48,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35120 states. [2020-10-28 14:11:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35120 states to 35120 states and 46144 transitions. [2020-10-28 14:11:48,428 INFO L78 Accepts]: Start accepts. Automaton has 35120 states and 46144 transitions. Word has length 182 [2020-10-28 14:11:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:11:48,430 INFO L481 AbstractCegarLoop]: Abstraction has 35120 states and 46144 transitions. [2020-10-28 14:11:48,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:11:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 35120 states and 46144 transitions. [2020-10-28 14:11:48,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 14:11:48,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:11:48,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:48,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:11:48,437 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:11:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:11:48,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1633593776, now seen corresponding path program 1 times [2020-10-28 14:11:48,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:11:48,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516768100] [2020-10-28 14:11:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:11:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:11:48,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:11:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking...