/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/Problem12_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:26:10,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:26:10,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:26:10,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:26:10,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:26:10,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:26:10,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:26:10,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:26:10,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:26:10,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:26:10,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:26:10,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:26:10,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:26:10,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:26:10,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:26:10,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:26:10,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:26:10,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:26:10,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:26:10,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:26:10,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:26:10,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:26:10,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:26:10,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:26:10,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:26:10,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:26:10,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:26:10,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:26:10,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:26:10,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:26:10,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:26:10,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:26:10,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:26:10,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:26:10,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:26:10,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:26:10,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:26:10,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:26:10,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:26:10,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:26:10,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:26:10,919 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 12:26:10,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:26:10,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:26:10,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:26:10,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:26:10,949 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:26:10,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:26:10,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:26:10,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:26:10,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:26:10,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:26:10,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:26:10,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:26:10,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:26:10,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:26:10,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:26:10,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:26:10,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:26:10,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:26:10,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:26:10,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:26:10,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:26:10,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:26:10,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:26:10,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:26:10,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:26:10,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:26:10,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:26:10,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:26:10,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:26:10,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:26:11,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:26:11,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:26:11,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:26:11,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:26:11,440 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:26:11,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2020-10-28 12:26:11,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9fe06895/2bf06cbba72c4c8b8b78a1a779b57de7/FLAG13805a09d [2020-10-28 12:26:12,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:26:12,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2020-10-28 12:26:12,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9fe06895/2bf06cbba72c4c8b8b78a1a779b57de7/FLAG13805a09d [2020-10-28 12:26:12,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9fe06895/2bf06cbba72c4c8b8b78a1a779b57de7 [2020-10-28 12:26:12,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:26:12,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:26:12,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:26:12,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:26:12,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:26:12,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:12" (1/1) ... [2020-10-28 12:26:12,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f78a2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:12, skipping insertion in model container [2020-10-28 12:26:12,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:26:12" (1/1) ... [2020-10-28 12:26:12,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:26:13,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:26:14,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:26:14,662 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:26:15,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:26:15,523 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:26:15,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15 WrapperNode [2020-10-28 12:26:15,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:26:15,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:26:15,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:26:15,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:26:15,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (1/1) ... [2020-10-28 12:26:15,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (1/1) ... [2020-10-28 12:26:15,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (1/1) ... [2020-10-28 12:26:15,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (1/1) ... [2020-10-28 12:26:15,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (1/1) ... [2020-10-28 12:26:15,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (1/1) ... [2020-10-28 12:26:15,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (1/1) ... [2020-10-28 12:26:15,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:26:15,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:26:15,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:26:15,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:26:15,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (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 12:26:15,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:26:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:26:15,987 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:26:15,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:26:15,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:26:15,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:26:15,989 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:26:15,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:26:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:26:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:26:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:26:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:26:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:26:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:26:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:26:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:26:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:26:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:26:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:26:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:26:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:26:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:26:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:26:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:26:15,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:26:22,286 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:26:22,287 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:26:22,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:22 BoogieIcfgContainer [2020-10-28 12:26:22,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:26:22,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:26:22,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:26:22,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:26:22,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:26:12" (1/3) ... [2020-10-28 12:26:22,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158b7335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:22, skipping insertion in model container [2020-10-28 12:26:22,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:26:15" (2/3) ... [2020-10-28 12:26:22,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158b7335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:26:22, skipping insertion in model container [2020-10-28 12:26:22,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:26:22" (3/3) ... [2020-10-28 12:26:22,307 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label53.c [2020-10-28 12:26:22,321 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:26:22,328 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:26:22,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:26:22,397 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:26:22,397 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:26:22,398 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:26:22,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:26:22,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:26:22,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:26:22,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:26:22,398 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:26:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:26:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 12:26:22,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:22,463 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] [2020-10-28 12:26:22,464 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1629092724, now seen corresponding path program 1 times [2020-10-28 12:26:22,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:22,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788797874] [2020-10-28 12:26:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:23,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 12:26:23,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-28 12:26:23,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:23,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:23,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 12:26:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:26:23,594 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:26:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:23,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:23,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:23,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:23,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:26:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:23,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:23,658 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 12:26:23,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788797874] [2020-10-28 12:26:23,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:23,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:26:23,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938820385] [2020-10-28 12:26:23,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:26:23,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:23,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:26:23,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:26:23,688 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:26:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:34,395 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-28 12:26:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:26:34,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-28 12:26:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:34,432 INFO L225 Difference]: With dead ends: 2492 [2020-10-28 12:26:34,433 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:26:34,443 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 12:26:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:26:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-28 12:26:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-28 12:26:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-28 12:26:34,703 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 39 [2020-10-28 12:26:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:34,704 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-28 12:26:34,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:26:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-28 12:26:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 12:26:34,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:34,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:34,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:26:34,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:34,720 INFO L82 PathProgramCache]: Analyzing trace with hash 420925301, now seen corresponding path program 1 times [2020-10-28 12:26:34,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:34,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498333875] [2020-10-28 12:26:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:35,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:35,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:26:35,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:26:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1099 [2020-10-28 12:26:35,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:35,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:26:35,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:36,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:36,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:36,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:26:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:36,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:36,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:36,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:26:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:26:36,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:36,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:26:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:36,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498333875] [2020-10-28 12:26:36,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:36,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:26:36,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280547586] [2020-10-28 12:26:36,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:36,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:36,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:36,386 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-28 12:26:49,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:49,657 INFO L93 Difference]: Finished difference Result 4771 states and 7609 transitions. [2020-10-28 12:26:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:26:49,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-28 12:26:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:49,686 INFO L225 Difference]: With dead ends: 4771 [2020-10-28 12:26:49,686 INFO L226 Difference]: Without dead ends: 3212 [2020-10-28 12:26:49,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:26:49,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2020-10-28 12:26:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3164. [2020-10-28 12:26:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-28 12:26:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4587 transitions. [2020-10-28 12:26:49,856 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4587 transitions. Word has length 118 [2020-10-28 12:26:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:49,859 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4587 transitions. [2020-10-28 12:26:49,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4587 transitions. [2020-10-28 12:26:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 12:26:49,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:49,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:49,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:26:49,873 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:49,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1769447653, now seen corresponding path program 1 times [2020-10-28 12:26:49,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:49,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990318238] [2020-10-28 12:26:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:51,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:51,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 12:26:51,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:26:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-28 12:26:51,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:51,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:26:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:26:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:26:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:51,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:51,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:51,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:51,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:26:51,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:51,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:26:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:51,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:51,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:52,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:52,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:26:52,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-28 12:26:52,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:52,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:26:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:26:52,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990318238] [2020-10-28 12:26:52,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:26:52,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:26:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394677163] [2020-10-28 12:26:52,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:52,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:52,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:52,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:52,433 INFO L87 Difference]: Start difference. First operand 3164 states and 4587 transitions. Second operand 7 states. [2020-10-28 12:27:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:08,489 INFO L93 Difference]: Finished difference Result 9681 states and 14360 transitions. [2020-10-28 12:27:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:27:08,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-28 12:27:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:08,533 INFO L225 Difference]: With dead ends: 9681 [2020-10-28 12:27:08,533 INFO L226 Difference]: Without dead ends: 6523 [2020-10-28 12:27:08,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:27:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2020-10-28 12:27:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6461. [2020-10-28 12:27:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6461 states. [2020-10-28 12:27:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 9366 transitions. [2020-10-28 12:27:08,804 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 9366 transitions. Word has length 147 [2020-10-28 12:27:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:08,804 INFO L481 AbstractCegarLoop]: Abstraction has 6461 states and 9366 transitions. [2020-10-28 12:27:08,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 9366 transitions. [2020-10-28 12:27:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 12:27:08,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:08,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:08,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:27:08,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:08,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:08,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1479155197, now seen corresponding path program 1 times [2020-10-28 12:27:08,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:08,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253056716] [2020-10-28 12:27:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:09,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:10,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:10,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 12:27:10,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-28 12:27:10,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:10,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:27:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:10,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:10,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:10,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:10,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:10,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:27:10,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:10,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:10,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:11,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:27:11,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 12:27:11,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:11,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:27:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:27:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:27:11,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253056716] [2020-10-28 12:27:11,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:11,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:27:11,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976505823] [2020-10-28 12:27:11,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:11,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:11,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:11,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:11,216 INFO L87 Difference]: Start difference. First operand 6461 states and 9366 transitions. Second operand 7 states. [2020-10-28 12:27:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:26,732 INFO L93 Difference]: Finished difference Result 19959 states and 30220 transitions. [2020-10-28 12:27:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:27:26,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-28 12:27:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:26,847 INFO L225 Difference]: With dead ends: 19959 [2020-10-28 12:27:26,847 INFO L226 Difference]: Without dead ends: 13504 [2020-10-28 12:27:26,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:27:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13504 states. [2020-10-28 12:27:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13504 to 13246. [2020-10-28 12:27:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13246 states. [2020-10-28 12:27:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13246 states to 13246 states and 18217 transitions. [2020-10-28 12:27:27,399 INFO L78 Accepts]: Start accepts. Automaton has 13246 states and 18217 transitions. Word has length 159 [2020-10-28 12:27:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:27,401 INFO L481 AbstractCegarLoop]: Abstraction has 13246 states and 18217 transitions. [2020-10-28 12:27:27,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 13246 states and 18217 transitions. [2020-10-28 12:27:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 12:27:27,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:27,407 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:27:27,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:27:27,408 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:27,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1135185886, now seen corresponding path program 1 times [2020-10-28 12:27:27,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:27,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953434918] [2020-10-28 12:27:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:28,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:29,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:29,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 12:27:29,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:27:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2189 [2020-10-28 12:27:29,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:29,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:27:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 12:27:29,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:29,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:29,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:29,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:29,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:27:29,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:29,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:29,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:29,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:29,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:29,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:29,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:27:29,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:27:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:29,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:27:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:27:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:27:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:30,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:27:30,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-28 12:27:30,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:30,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:27:30,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 101 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:27:30,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953434918] [2020-10-28 12:27:30,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:30,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:27:30,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708729663] [2020-10-28 12:27:30,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:27:30,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:30,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:27:30,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:27:30,731 INFO L87 Difference]: Start difference. First operand 13246 states and 18217 transitions. Second operand 6 states. [2020-10-28 12:27:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:49,956 INFO L93 Difference]: Finished difference Result 33126 states and 47868 transitions. [2020-10-28 12:27:49,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:27:49,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2020-10-28 12:27:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:50,056 INFO L225 Difference]: With dead ends: 33126 [2020-10-28 12:27:50,056 INFO L226 Difference]: Without dead ends: 19886 [2020-10-28 12:27:50,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:27:50,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19886 states. [2020-10-28 12:27:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19886 to 19834. [2020-10-28 12:27:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19834 states. [2020-10-28 12:27:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19834 states to 19834 states and 26842 transitions. [2020-10-28 12:27:50,673 INFO L78 Accepts]: Start accepts. Automaton has 19834 states and 26842 transitions. Word has length 234 [2020-10-28 12:27:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:50,674 INFO L481 AbstractCegarLoop]: Abstraction has 19834 states and 26842 transitions. [2020-10-28 12:27:50,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:27:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 19834 states and 26842 transitions. [2020-10-28 12:27:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 12:27:50,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:50,681 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:50,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:27:50,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1949184848, now seen corresponding path program 1 times [2020-10-28 12:27:50,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:50,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936952809] [2020-10-28 12:27:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:55,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:55,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 12:27:55,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:27:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:27:55,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:55,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:55,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 12:27:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:55,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:55,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:55,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:55,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:27:55,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:55,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:55,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:56,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:56,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 12:27:56,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 12:27:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:56,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:27:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-28 12:27:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:56,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:56,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:56,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:27:56,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:56,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:27:56,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:56,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 12:27:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:27:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 62 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:27:56,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936952809] [2020-10-28 12:27:56,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:56,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:56,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406493872] [2020-10-28 12:27:56,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:56,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:56,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:56,727 INFO L87 Difference]: Start difference. First operand 19834 states and 26842 transitions. Second operand 7 states. [2020-10-28 12:28:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:16,067 INFO L93 Difference]: Finished difference Result 49759 states and 69147 transitions. [2020-10-28 12:28:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:28:16,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-28 12:28:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:16,216 INFO L225 Difference]: With dead ends: 49759 [2020-10-28 12:28:16,216 INFO L226 Difference]: Without dead ends: 29931 [2020-10-28 12:28:16,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:28:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29931 states. [2020-10-28 12:28:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29931 to 29879. [2020-10-28 12:28:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29879 states. [2020-10-28 12:28:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29879 states to 29879 states and 41140 transitions. [2020-10-28 12:28:17,515 INFO L78 Accepts]: Start accepts. Automaton has 29879 states and 41140 transitions. Word has length 260 [2020-10-28 12:28:17,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:17,516 INFO L481 AbstractCegarLoop]: Abstraction has 29879 states and 41140 transitions. [2020-10-28 12:28:17,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 29879 states and 41140 transitions. [2020-10-28 12:28:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 12:28:17,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:17,527 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:28:17,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:28:17,528 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1420211146, now seen corresponding path program 1 times [2020-10-28 12:28:17,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:17,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244721169] [2020-10-28 12:28:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:22,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:22,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-28 12:28:22,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:28:22,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4366 [2020-10-28 12:28:22,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:22,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:28:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 12:28:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:22,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:22,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:22,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:22,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:22,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:28:22,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:22,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:22,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:22,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:22,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:28:22,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 12:28:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:22,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:28:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:28:22,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:28:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:22,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:22,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:28:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 12:28:22,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:22,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:28:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 152 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:28:23,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244721169] [2020-10-28 12:28:23,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:23,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:28:23,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799107656] [2020-10-28 12:28:23,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:28:23,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:28:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:28:23,067 INFO L87 Difference]: Start difference. First operand 29879 states and 41140 transitions. Second operand 6 states. [2020-10-28 12:28:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:42,676 INFO L93 Difference]: Finished difference Result 74824 states and 110688 transitions. [2020-10-28 12:28:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:28:42,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2020-10-28 12:28:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:43,039 INFO L225 Difference]: With dead ends: 74824 [2020-10-28 12:28:43,040 INFO L226 Difference]: Without dead ends: 44951 [2020-10-28 12:28:43,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:28:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44951 states. [2020-10-28 12:28:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44951 to 44810. [2020-10-28 12:28:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44810 states. [2020-10-28 12:28:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44810 states to 44810 states and 64322 transitions. [2020-10-28 12:28:44,346 INFO L78 Accepts]: Start accepts. Automaton has 44810 states and 64322 transitions. Word has length 310 [2020-10-28 12:28:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:44,347 INFO L481 AbstractCegarLoop]: Abstraction has 44810 states and 64322 transitions. [2020-10-28 12:28:44,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:28:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 44810 states and 64322 transitions. [2020-10-28 12:28:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-28 12:28:44,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:44,358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:28:44,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:28:44,359 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:44,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1768208322, now seen corresponding path program 1 times [2020-10-28 12:28:44,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:44,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792744237] [2020-10-28 12:28:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:48,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:48,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-28 12:28:48,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:28:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3874 [2020-10-28 12:28:48,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:48,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:28:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 12:28:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:48,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:48,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:28:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:28:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:49,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:28:49,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-28 12:28:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:49,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:28:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 152 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:28:49,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792744237] [2020-10-28 12:28:49,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:28:49,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:28:49,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930869231] [2020-10-28 12:28:49,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:28:49,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:49,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:28:49,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:28:49,782 INFO L87 Difference]: Start difference. First operand 44810 states and 64322 transitions. Second operand 6 states. [2020-10-28 12:28:51,230 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:29:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:15,751 INFO L93 Difference]: Finished difference Result 103980 states and 155974 transitions. [2020-10-28 12:29:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:29:15,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 314 [2020-10-28 12:29:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:16,103 INFO L225 Difference]: With dead ends: 103980 [2020-10-28 12:29:16,103 INFO L226 Difference]: Without dead ends: 59176 [2020-10-28 12:29:16,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:29:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59176 states. [2020-10-28 12:29:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59176 to 58300. [2020-10-28 12:29:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58300 states. [2020-10-28 12:29:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58300 states to 58300 states and 82419 transitions. [2020-10-28 12:29:18,728 INFO L78 Accepts]: Start accepts. Automaton has 58300 states and 82419 transitions. Word has length 314 [2020-10-28 12:29:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:18,730 INFO L481 AbstractCegarLoop]: Abstraction has 58300 states and 82419 transitions. [2020-10-28 12:29:18,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:29:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 58300 states and 82419 transitions. [2020-10-28 12:29:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:29:18,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:18,764 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:29:18,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:29:18,765 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:18,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1314451446, now seen corresponding path program 1 times [2020-10-28 12:29:18,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:18,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832889278] [2020-10-28 12:29:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:22,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:22,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:29:22,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:29:22,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3441 [2020-10-28 12:29:22,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:22,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:29:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 12:29:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:22,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:22,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:29:22,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:22,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:22,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:22,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:22,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:29:22,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:22,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:29:22,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:22,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:22,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:22,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:22,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:29:22,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:22,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:29:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:22,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:22,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 12:29:22,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 12:29:22,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:22,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 12:29:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:29:23,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832889278] [2020-10-28 12:29:23,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:23,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:29:23,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431874229] [2020-10-28 12:29:23,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:23,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:23,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:23,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:23,239 INFO L87 Difference]: Start difference. First operand 58300 states and 82419 transitions. Second operand 7 states.