/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:15:29,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:15:29,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:15:29,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:15:29,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:15:29,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:15:29,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:15:29,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:15:29,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:15:29,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:15:29,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:15:29,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:15:29,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:15:29,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:15:29,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:15:29,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:15:29,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:15:29,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:15:29,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:15:29,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:15:29,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:15:29,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:15:29,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:15:29,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:15:29,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:15:29,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:15:29,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:15:29,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:15:29,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:15:29,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:15:29,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:15:29,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:15:29,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:15:29,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:15:29,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:15:29,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:15:29,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:15:29,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:15:29,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:15:29,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:15:29,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:15:29,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:15:29,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:15:29,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:15:29,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:15:29,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:15:29,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:15:29,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:15:29,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:15:29,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:15:29,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:15:29,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:15:29,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:15:29,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:15:29,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:15:29,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:15:29,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:15:29,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:15:29,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:15:29,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:15:29,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:15:29,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:15:29,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:15:29,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:15:29,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:15:29,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:15:29,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:15:29,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:15:29,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:15:29,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:15:29,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:15:29,413 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-13 10:15:29,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:15:29,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:15:29,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:15:29,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:15:29,712 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:15:29,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2020-10-13 10:15:29,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55cd19c9b/25f46c3d6a6f4e3998405d076bd895df/FLAG4d41f1656 [2020-10-13 10:15:30,217 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:15:30,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2020-10-13 10:15:30,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55cd19c9b/25f46c3d6a6f4e3998405d076bd895df/FLAG4d41f1656 [2020-10-13 10:15:30,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55cd19c9b/25f46c3d6a6f4e3998405d076bd895df [2020-10-13 10:15:30,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:15:30,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:15:30,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:30,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:15:30,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:15:30,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729acd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30, skipping insertion in model container [2020-10-13 10:15:30,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:15:30,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:15:30,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:30,803 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:15:30,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:15:30,845 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:15:30,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30 WrapperNode [2020-10-13 10:15:30,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:15:30,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:15:30,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:15:30,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:15:30,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... [2020-10-13 10:15:30,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:15:30,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:15:30,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:15:30,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:15:30,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:15:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:15:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:15:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:15:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:15:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:15:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:15:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:15:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:15:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:15:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:15:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:15:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-13 10:15:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:15:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:15:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:15:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:15:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:15:31,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:15:31,273 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 10:15:31,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:31 BoogieIcfgContainer [2020-10-13 10:15:31,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:15:31,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:15:31,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:15:31,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:15:31,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:15:30" (1/3) ... [2020-10-13 10:15:31,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a55ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:31, skipping insertion in model container [2020-10-13 10:15:31,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:15:30" (2/3) ... [2020-10-13 10:15:31,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a55ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:15:31, skipping insertion in model container [2020-10-13 10:15:31,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:15:31" (3/3) ... [2020-10-13 10:15:31,285 INFO L109 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2020-10-13 10:15:31,296 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:15:31,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:15:31,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:15:31,360 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:15:31,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:15:31,361 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:15:31,361 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:15:31,361 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:15:31,361 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:15:31,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:15:31,362 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:15:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-13 10:15:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:15:31,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:31,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:31,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:31,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1308059990, now seen corresponding path program 1 times [2020-10-13 10:15:31,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:31,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667064256] [2020-10-13 10:15:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:31,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:31,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:31,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:15:31,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:15:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-13 10:15:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:15:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:15:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:15:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:15:31,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:15:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:32,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:32,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:15:32,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:32,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:15:32,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:32,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:32,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:32,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:15:32,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667064256] [2020-10-13 10:15:32,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:15:32,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:15:32,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470919254] [2020-10-13 10:15:32,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:15:32,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:15:32,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:15:32,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:15:32,044 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-13 10:15:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:15:32,142 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-10-13 10:15:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:15:32,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 10:15:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:15:32,154 INFO L225 Difference]: With dead ends: 41 [2020-10-13 10:15:32,155 INFO L226 Difference]: Without dead ends: 19 [2020-10-13 10:15:32,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:15:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-13 10:15:32,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-13 10:15:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-13 10:15:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-10-13 10:15:32,190 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2020-10-13 10:15:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:15:32,191 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-13 10:15:32,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:15:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-10-13 10:15:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:15:32,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:32,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:32,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:15:32,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash 232815599, now seen corresponding path program 1 times [2020-10-13 10:15:32,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:32,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587647628] [2020-10-13 10:15:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:32,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:32,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:32,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:32,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:15:32,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:15:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 10:15:32,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:15:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:15:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:15:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:15:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:32,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:32,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:15:32,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:32,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:15:32,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:32,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:15:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:15:32,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587647628] [2020-10-13 10:15:32,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:15:32,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:15:32,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952225310] [2020-10-13 10:15:32,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:15:32,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:15:32,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:15:32,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:15:32,363 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 4 states. [2020-10-13 10:15:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:15:32,418 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-10-13 10:15:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:15:32,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 10:15:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:15:32,420 INFO L225 Difference]: With dead ends: 37 [2020-10-13 10:15:32,420 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 10:15:32,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:15:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 10:15:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-10-13 10:15:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-13 10:15:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-13 10:15:32,429 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2020-10-13 10:15:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:15:32,429 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-13 10:15:32,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:15:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-13 10:15:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:15:32,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:32,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:32,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:15:32,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:32,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:32,443 INFO L82 PathProgramCache]: Analyzing trace with hash -495460686, now seen corresponding path program 1 times [2020-10-13 10:15:32,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:32,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381609750] [2020-10-13 10:15:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:32,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:32,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:15:32,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:32,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 10:15:32,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:15:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 10:15:32,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:15:32,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:15:32,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:15:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:15:32,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:15:32,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:15:32,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:15:32,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:15:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:15:32,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:15:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:15:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:15:32,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:15:32,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:15:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:15:32,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381609750] [2020-10-13 10:15:32,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:15:32,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:15:32,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164766842] [2020-10-13 10:15:32,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:15:32,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:15:32,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:15:32,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:15:32,554 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-13 10:15:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:15:32,627 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-10-13 10:15:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:15:32,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-13 10:15:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:15:32,629 INFO L225 Difference]: With dead ends: 24 [2020-10-13 10:15:32,629 INFO L226 Difference]: Without dead ends: 20 [2020-10-13 10:15:32,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:15:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-13 10:15:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-13 10:15:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-13 10:15:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-13 10:15:32,641 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2020-10-13 10:15:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:15:32,641 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-13 10:15:32,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:15:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-13 10:15:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:15:32,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:15:32,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:15:32,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:15:32,644 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:15:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:15:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash -480356649, now seen corresponding path program 1 times [2020-10-13 10:15:32,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:15:32,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245054756] [2020-10-13 10:15:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:15:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:15:32,667 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:15:32,667 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:15:32,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:15:32,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:15:32 BoogieIcfgContainer [2020-10-13 10:15:32,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:15:32,714 INFO L168 Benchmark]: Toolchain (without parser) took 2120.29 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 103.3 MB in the beginning and 179.0 MB in the end (delta: -75.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:32,715 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:15:32,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.26 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 92.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:32,721 INFO L168 Benchmark]: Boogie Preprocessor took 122.51 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 181.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:32,721 INFO L168 Benchmark]: RCFGBuilder took 307.44 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 164.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:32,726 INFO L168 Benchmark]: TraceAbstraction took 1431.39 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 163.6 MB in the beginning and 179.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:15:32,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.26 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 92.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.51 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 181.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.44 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 164.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1431.39 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 163.6 MB in the beginning and 179.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 49]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 36, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 34. Possible FailurePath: [L1] int __return_main; [L12] int main__i; [L13] float main__z; [L14] float main__t; [L15] float main__min[5] = { 5, 10, 12, 30, 150 }; [L16] float main__max[5] = { 10, 12, 30, 150, 300 }; [L17] main__t = __VERIFIER_nondet_float() [L18] int main____CPAchecker_TMP_0; [L19] EXPR main__min[0] [L19] COND TRUE main__t >= (main__min[0]) [L21] EXPR main__max[4UL] [L21] COND TRUE main__t <= (main__max[4UL]) [L23] main____CPAchecker_TMP_0 = 1 [L25] COND TRUE main____CPAchecker_TMP_0 != 0 [L27] main__i = 0 [L29] COND TRUE main__i < 5UL [L31] EXPR main__max[main__i] [L31] COND TRUE main__t <= (main__max[main__i]) [L34] EXPR main__min[main__i] [L34] EXPR main__max[main__i] [L34] EXPR main__min[main__i] [L34] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L35] int main____CPAchecker_TMP_1; [L36] COND FALSE !(main__z >= 0.0) [L61] main____CPAchecker_TMP_1 = 0 [L43] int __tmp_1; [L44] __tmp_1 = main____CPAchecker_TMP_1 [L45] int __VERIFIER_assert__cond; [L46] __VERIFIER_assert__cond = __tmp_1 [L47] COND TRUE __VERIFIER_assert__cond == 0 [L49] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 14 SDslu, 82 SDs, 0 SdLazy, 88 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...