/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=LOWLEXORDER --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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:20,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:20,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:20,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:20,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:20,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:20,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:20,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:20,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:20,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:20,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:20,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:20,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:20,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:20,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:20,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:20,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:20,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:20,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:20,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:20,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:20,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:20,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:20,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:20,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:20,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:20,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:20,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:20,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:20,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:20,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:20,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:20,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:20,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:20,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:20,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:20,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:20,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:20,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:20,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:20,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:20,693 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 [2020-09-24 21:30:20,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:20,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:20,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:20,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:20,723 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:20,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:20,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:20,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:20,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:20,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:20,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:20,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:20,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:20,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:20,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:20,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:20,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:20,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:20,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:20,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:20,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:20,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:20,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:20,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:20,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:20,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:20,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:20,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:20,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:20,728 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:21,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:21,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:21,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:21,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:21,243 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:21,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-09-24 21:30:21,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d744dfe3/4b4bd9cd0b7e4623a775a0b0c8606c33/FLAGe973d7c2c [2020-09-24 21:30:21,902 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:21,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-09-24 21:30:21,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d744dfe3/4b4bd9cd0b7e4623a775a0b0c8606c33/FLAGe973d7c2c [2020-09-24 21:30:22,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d744dfe3/4b4bd9cd0b7e4623a775a0b0c8606c33 [2020-09-24 21:30:22,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:22,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:22,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:22,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:22,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:22,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568e2849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22, skipping insertion in model container [2020-09-24 21:30:22,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:22,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:22,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:22,562 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:22,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:22,639 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:22,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22 WrapperNode [2020-09-24 21:30:22,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:22,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:22,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:22,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:22,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (1/1) ... [2020-09-24 21:30:22,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:22,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:22,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:22,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:22,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (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 [2020-09-24 21:30:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:22,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 21:30:22,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 21:30:22,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-24 21:30:22,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 21:30:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 21:30:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 21:30:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 21:30:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-24 21:30:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 21:30:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:23,365 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:23,366 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 21:30:23,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:23 BoogieIcfgContainer [2020-09-24 21:30:23,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:23,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:23,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:23,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:23,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:22" (1/3) ... [2020-09-24 21:30:23,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab2d9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:23, skipping insertion in model container [2020-09-24 21:30:23,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:22" (2/3) ... [2020-09-24 21:30:23,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab2d9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:23, skipping insertion in model container [2020-09-24 21:30:23,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:23" (3/3) ... [2020-09-24 21:30:23,381 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-09-24 21:30:23,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:23,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:23,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:23,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:23,449 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:23,449 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:23,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:23,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:23,449 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:23,449 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:23,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:23,475 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-24 21:30:23,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:30:23,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:23,485 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] [2020-09-24 21:30:23,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:23,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1987914920, now seen corresponding path program 1 times [2020-09-24 21:30:23,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:23,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004826901] [2020-09-24 21:30:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:30:24,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-24 21:30:24,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 21:30:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:30:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:24,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:30:24,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:24,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:30:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:30:24,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 21:30:24,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:30:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:30:24,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:30:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:24,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004826901] [2020-09-24 21:30:24,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:24,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:24,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648529908] [2020-09-24 21:30:24,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:24,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:24,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:24,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:24,249 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 4 states. [2020-09-24 21:30:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:24,596 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-24 21:30:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:24,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-24 21:30:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:24,617 INFO L225 Difference]: With dead ends: 176 [2020-09-24 21:30:24,618 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 21:30:24,624 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 [2020-09-24 21:30:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 21:30:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-24 21:30:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 21:30:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-24 21:30:24,686 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 35 [2020-09-24 21:30:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:24,686 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-24 21:30:24,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-24 21:30:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 21:30:24,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:24,691 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] [2020-09-24 21:30:24,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:24,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:24,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1530124146, now seen corresponding path program 1 times [2020-09-24 21:30:24,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:24,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702884395] [2020-09-24 21:30:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 21:30:24,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-24 21:30:24,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 21:30:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:24,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:24,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:24,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:24,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:24,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:30:24,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:24,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 21:30:25,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 21:30:25,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 21:30:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:25,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:30:25,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:30:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:30:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:25,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702884395] [2020-09-24 21:30:25,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:25,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:25,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155359329] [2020-09-24 21:30:25,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:25,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:25,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:25,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:25,277 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-09-24 21:30:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:25,512 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-09-24 21:30:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:25,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-24 21:30:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:25,517 INFO L225 Difference]: With dead ends: 123 [2020-09-24 21:30:25,517 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 21:30:25,519 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 [2020-09-24 21:30:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 21:30:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-24 21:30:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:25,538 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-09-24 21:30:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:25,539 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:25,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 21:30:25,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:25,545 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] [2020-09-24 21:30:25,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:25,545 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:25,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1188811885, now seen corresponding path program 1 times [2020-09-24 21:30:25,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:25,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934501443] [2020-09-24 21:30:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 21:30:25,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 21:30:25,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 21:30:25,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:25,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:30:25,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:25,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:25,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:25,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:25,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 21:30:25,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 21:30:25,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 21:30:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:25,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:25,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:30:26,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 21:30:26,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:30:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:26,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934501443] [2020-09-24 21:30:26,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:26,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:26,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033346418] [2020-09-24 21:30:26,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:26,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:26,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:26,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:26,124 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 21:30:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:26,354 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 21:30:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:26,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-09-24 21:30:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:26,356 INFO L225 Difference]: With dead ends: 127 [2020-09-24 21:30:26,357 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:30:26,358 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 [2020-09-24 21:30:26,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:30:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 21:30:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:26,370 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 50 [2020-09-24 21:30:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:26,370 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:26,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:30:26,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:26,373 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] [2020-09-24 21:30:26,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:30:26,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:26,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2048064115, now seen corresponding path program 1 times [2020-09-24 21:30:26,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:26,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180982027] [2020-09-24 21:30:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 21:30:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 21:30:26,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 21:30:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:26,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:30:26,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:26,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:26,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:30:26,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 21:30:26,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 21:30:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:26,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:26,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 21:30:26,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:30:26,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:30:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:26,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180982027] [2020-09-24 21:30:26,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:26,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:26,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164192143] [2020-09-24 21:30:26,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:26,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:26,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:26,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:26,812 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 21:30:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:27,036 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 21:30:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:27,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 21:30:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:27,039 INFO L225 Difference]: With dead ends: 127 [2020-09-24 21:30:27,039 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:30:27,040 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 [2020-09-24 21:30:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:30:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 21:30:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:27,050 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 51 [2020-09-24 21:30:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:27,051 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:27,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:27,051 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:30:27,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:27,052 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] [2020-09-24 21:30:27,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:30:27,053 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:27,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:27,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1091693362, now seen corresponding path program 1 times [2020-09-24 21:30:27,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:27,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532210530] [2020-09-24 21:30:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:30:27,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 21:30:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 21:30:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:27,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:30:27,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 21:30:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 21:30:27,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 21:30:27,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 21:30:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:30:27,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:27,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:30:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:27,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:27,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 21:30:27,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 21:30:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:30:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:30:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:27,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532210530] [2020-09-24 21:30:27,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:27,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:30:27,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724902003] [2020-09-24 21:30:27,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:30:27,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:27,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:30:27,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:30:27,451 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-24 21:30:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:27,637 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-24 21:30:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:30:27,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 21:30:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:27,639 INFO L225 Difference]: With dead ends: 127 [2020-09-24 21:30:27,639 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 21:30:27,640 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 [2020-09-24 21:30:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 21:30:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-24 21:30:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 21:30:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 21:30:27,649 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-24 21:30:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:27,649 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 21:30:27,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:30:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 21:30:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:30:27,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:27,651 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] [2020-09-24 21:30:27,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:30:27,651 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:27,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1804168050, now seen corresponding path program 1 times [2020-09-24 21:30:27,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:27,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987227694] [2020-09-24 21:30:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:27,669 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:27,669 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:27,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:30:27,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:27 BoogieIcfgContainer [2020-09-24 21:30:27,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:27,700 INFO L168 Benchmark]: Toolchain (without parser) took 5438.11 ms. Allocated memory was 146.8 MB in the beginning and 247.5 MB in the end (delta: 100.7 MB). Free memory was 103.1 MB in the beginning and 124.3 MB in the end (delta: -21.2 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,701 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:30:27,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.42 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 91.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,703 INFO L168 Benchmark]: Boogie Preprocessor took 149.12 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 91.3 MB in the beginning and 180.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,704 INFO L168 Benchmark]: RCFGBuilder took 580.64 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 155.1 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,709 INFO L168 Benchmark]: TraceAbstraction took 4323.55 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 155.1 MB in the beginning and 124.3 MB in the end (delta: 30.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:27,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.42 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 91.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.12 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 91.3 MB in the beginning and 180.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 580.64 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 155.1 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4323.55 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 155.1 MB in the beginning and 124.3 MB in the end (delta: 30.7 MB). Peak memory consumption was 74.7 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 74. 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: 4.2s, 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, 0.2s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s 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...