/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:59:42,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:59:42,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:59:42,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:59:42,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:59:42,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:59:42,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:59:42,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:59:42,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:59:42,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:59:42,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:59:42,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:59:42,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:59:42,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:59:42,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:59:42,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:59:42,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:59:42,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:59:42,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:59:42,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:59:42,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:59:42,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:59:42,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:59:42,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:59:42,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:59:42,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:59:42,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:59:42,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:59:42,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:59:42,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:59:42,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:59:42,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:59:42,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:59:42,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:59:42,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:59:42,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:59:42,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:59:42,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:59:42,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:59:42,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:59:42,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:59:42,942 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 [2020-09-25 01:59:42,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:59:42,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:59:42,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:59:42,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:59:42,971 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:59:42,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:59:42,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:59:42,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:59:42,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:59:42,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:59:42,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:59:42,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:59:42,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:59:42,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:59:42,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:59:42,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:59:42,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:59:42,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:59:42,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:59:42,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:59:42,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:59:42,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:59:42,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:59:42,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:59:42,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:59:42,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:59:42,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:59:42,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:59:42,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:59:42,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 01:59:43,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:59:43,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:59:43,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:59:43,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:59:43,524 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:59:43,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-09-25 01:59:43,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f72b2446/54b30cec99d84ce4935813111574e3da/FLAG09ecc26a8 [2020-09-25 01:59:44,189 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:59:44,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2020-09-25 01:59:44,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f72b2446/54b30cec99d84ce4935813111574e3da/FLAG09ecc26a8 [2020-09-25 01:59:44,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f72b2446/54b30cec99d84ce4935813111574e3da [2020-09-25 01:59:44,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:59:44,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:59:44,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:44,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:59:44,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:59:44,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44, skipping insertion in model container [2020-09-25 01:59:44,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:59:44,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:59:44,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:44,834 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:59:44,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:59:44,975 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:59:44,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44 WrapperNode [2020-09-25 01:59:44,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:59:44,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:59:44,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:59:44,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:59:44,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:44,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:45,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:45,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:45,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:45,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:45,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (1/1) ... [2020-09-25 01:59:45,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:59:45,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:59:45,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:59:45,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:59:45,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (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 [2020-09-25 01:59:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:59:45,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:59:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 01:59:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 01:59:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-25 01:59:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 01:59:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:59:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:59:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 01:59:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 01:59:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 01:59:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:59:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 01:59:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:59:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:59:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-25 01:59:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 01:59:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:59:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:59:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:59:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:59:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 01:59:45,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:59:45,593 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 01:59:45,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:45 BoogieIcfgContainer [2020-09-25 01:59:45,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:59:45,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:59:45,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:59:45,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:59:45,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:59:44" (1/3) ... [2020-09-25 01:59:45,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d4f2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:45, skipping insertion in model container [2020-09-25 01:59:45,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:59:44" (2/3) ... [2020-09-25 01:59:45,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d4f2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:59:45, skipping insertion in model container [2020-09-25 01:59:45,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:59:45" (3/3) ... [2020-09-25 01:59:45,610 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2020-09-25 01:59:45,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:59:45,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:59:45,652 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:59:45,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:59:45,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:59:45,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:59:45,681 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:59:45,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:59:45,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:59:45,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:59:45,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:59:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-25 01:59:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 01:59:45,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:45,715 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] [2020-09-25 01:59:45,716 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1987914920, now seen corresponding path program 1 times [2020-09-25 01:59:45,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:45,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286892824] [2020-09-25 01:59:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 01:59:46,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-25 01:59:46,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:59:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 01:59:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:46,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 01:59:46,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:46,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:46,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:59:46,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:59:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 01:59:46,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 01:59:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:46,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:46,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:46,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:59:46,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:46,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:59:46,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:59:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:46,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286892824] [2020-09-25 01:59:46,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:46,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:59:46,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777767911] [2020-09-25 01:59:46,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:59:46,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:59:46,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:59:46,616 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-09-25 01:59:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:46,918 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-25 01:59:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:59:46,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-25 01:59:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:46,935 INFO L225 Difference]: With dead ends: 176 [2020-09-25 01:59:46,935 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 01:59:46,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:59:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 01:59:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-25 01:59:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 01:59:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-25 01:59:47,006 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-09-25 01:59:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:47,006 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-25 01:59:47,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:59:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-25 01:59:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 01:59:47,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:47,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:47,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:59:47,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:47,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1530124146, now seen corresponding path program 1 times [2020-09-25 01:59:47,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:47,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351157467] [2020-09-25 01:59:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 01:59:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 01:59:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 01:59:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:47,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:59:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 01:59:47,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 01:59:47,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:59:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:59:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 01:59:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:59:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:47,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351157467] [2020-09-25 01:59:47,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:47,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:47,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992596096] [2020-09-25 01:59:47,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:47,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:47,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:47,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:47,557 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-09-25 01:59:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:47,789 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-09-25 01:59:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:47,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 01:59:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:47,794 INFO L225 Difference]: With dead ends: 123 [2020-09-25 01:59:47,795 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 01:59:47,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 01:59:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-25 01:59:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:47,813 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-09-25 01:59:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:47,813 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:47,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 01:59:47,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:47,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:47,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:59:47,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:47,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1188811885, now seen corresponding path program 1 times [2020-09-25 01:59:47,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:47,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752907651] [2020-09-25 01:59:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 01:59:48,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 01:59:48,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 01:59:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:48,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:59:48,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:59:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 01:59:48,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 01:59:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 01:59:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:59:48,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 01:59:48,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 01:59:48,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 01:59:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 01:59:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:48,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752907651] [2020-09-25 01:59:48,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:48,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:48,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092662399] [2020-09-25 01:59:48,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:48,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:48,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:48,409 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:48,658 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:48,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-25 01:59:48,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:48,662 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:48,663 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:48,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:48,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:48,682 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 50 [2020-09-25 01:59:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:48,683 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:48,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 01:59:48,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:48,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:48,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:59:48,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:48,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2048064115, now seen corresponding path program 1 times [2020-09-25 01:59:48,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:48,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270471012] [2020-09-25 01:59:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 01:59:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 01:59:48,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 01:59:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:48,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:59:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:48,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:48,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:59:48,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 01:59:48,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:48,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:59:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:48,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 01:59:49,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 01:59:49,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:59:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:49,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270471012] [2020-09-25 01:59:49,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:49,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:49,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662404947] [2020-09-25 01:59:49,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:49,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:49,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:49,129 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:49,347 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:49,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 01:59:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:49,349 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:49,349 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:49,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:49,374 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 51 [2020-09-25 01:59:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:49,375 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:49,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:59:49,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:49,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:49,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:59:49,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1091693362, now seen corresponding path program 1 times [2020-09-25 01:59:49,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:49,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436330725] [2020-09-25 01:59:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 01:59:49,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 01:59:49,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 01:59:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:59:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:59:49,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:59:49,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:59:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:59:49,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 01:59:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 01:59:49,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 01:59:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 01:59:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:59:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:59:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:59:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:59:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:59:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 01:59:49,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:59:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 01:59:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:59:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:59:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:59:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:59:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:59:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:59:49,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436330725] [2020-09-25 01:59:49,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:59:49,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:59:49,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740538648] [2020-09-25 01:59:49,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:59:49,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:59:49,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:59:49,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:59:49,811 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 01:59:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:59:50,007 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 01:59:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:59:50,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 01:59:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:59:50,009 INFO L225 Difference]: With dead ends: 127 [2020-09-25 01:59:50,009 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 01:59:50,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:59:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 01:59:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 01:59:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 01:59:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 01:59:50,020 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-25 01:59:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:59:50,020 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 01:59:50,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:59:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 01:59:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 01:59:50,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:59:50,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:59:50,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:59:50,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:59:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:59:50,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1804168050, now seen corresponding path program 1 times [2020-09-25 01:59:50,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:59:50,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370819557] [2020-09-25 01:59:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:59:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:59:50,043 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:59:50,044 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:59:50,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:59:50,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:59:50 BoogieIcfgContainer [2020-09-25 01:59:50,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:59:50,078 INFO L168 Benchmark]: Toolchain (without parser) took 5543.65 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 102.4 MB in the beginning and 134.4 MB in the end (delta: -32.0 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:50,079 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 01:59:50,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.38 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 180.7 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:50,081 INFO L168 Benchmark]: Boogie Preprocessor took 51.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:50,082 INFO L168 Benchmark]: RCFGBuilder took 571.36 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 153.2 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:50,083 INFO L168 Benchmark]: TraceAbstraction took 4473.40 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 152.5 MB in the beginning and 134.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:59:50,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 437.38 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 180.7 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 571.36 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 153.2 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4473.40 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 152.5 MB in the beginning and 134.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; [L76] CALL, EXPR fmin_double(x, y) [L46] CALL, EXPR __fpclassify_double(x) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] RET, EXPR __fpclassify_double(x) [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] RET, EXPR fmin_double(x, y) [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 471 SDtfs, 99 SDslu, 970 SDs, 0 SdLazy, 655 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 20602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...