/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:16:43,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:16:43,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:16:43,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:16:43,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:16:43,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:16:43,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:16:44,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:16:44,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:16:44,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:16:44,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:16:44,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:16:44,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:16:44,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:16:44,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:16:44,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:16:44,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:16:44,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:16:44,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:16:44,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:16:44,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:16:44,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:16:44,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:16:44,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:16:44,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:16:44,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:16:44,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:16:44,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:16:44,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:16:44,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:16:44,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:16:44,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:16:44,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:16:44,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:16:44,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:16:44,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:16:44,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:16:44,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:16:44,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:16:44,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:16:44,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:16:44,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:16:44,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:16:44,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:16:44,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:16:44,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:16:44,064 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:16:44,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:16:44,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:16:44,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:16:44,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:16:44,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:16:44,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:16:44,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:16:44,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:16:44,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:16:44,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:16:44,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:16:44,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:16:44,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:16:44,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:16:44,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:16:44,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:16:44,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:16:44,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:16:44,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:16:44,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:16:44,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:16:44,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:16:44,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:16:44,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:16:44,070 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:16:44,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:16:44,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:16:44,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:16:44,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:16:44,635 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:16:44,636 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-09-25 04:16:44,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e608dddc1/343216a1041940f4b7fb62e97129e52a/FLAG31fe61c29 [2020-09-25 04:16:45,282 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:16:45,283 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-09-25 04:16:45,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e608dddc1/343216a1041940f4b7fb62e97129e52a/FLAG31fe61c29 [2020-09-25 04:16:45,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e608dddc1/343216a1041940f4b7fb62e97129e52a [2020-09-25 04:16:45,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:16:45,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:16:45,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:16:45,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:16:45,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:16:45,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:45,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45, skipping insertion in model container [2020-09-25 04:16:45,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:45,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:16:45,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:16:45,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:16:45,910 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:16:45,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:16:45,961 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:16:45,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45 WrapperNode [2020-09-25 04:16:45,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:16:45,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:16:45,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:16:45,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:16:46,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:46,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:46,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:46,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:46,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:46,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:46,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... [2020-09-25 04:16:46,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:16:46,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:16:46,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:16:46,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:16:46,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:16:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:16:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:16:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-25 04:16:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-09-25 04:16:46,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-25 04:16:46,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:16:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:16:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-25 04:16:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:16:46,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 04:16:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:16:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:16:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-09-25 04:16:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-25 04:16:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:16:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:16:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:16:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 04:16:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:16:46,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:16:46,552 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 04:16:46,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:16:46 BoogieIcfgContainer [2020-09-25 04:16:46,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:16:46,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:16:46,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:16:46,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:16:46,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:16:45" (1/3) ... [2020-09-25 04:16:46,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56afc14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:16:46, skipping insertion in model container [2020-09-25 04:16:46,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:45" (2/3) ... [2020-09-25 04:16:46,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56afc14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:16:46, skipping insertion in model container [2020-09-25 04:16:46,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:16:46" (3/3) ... [2020-09-25 04:16:46,568 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-09-25 04:16:46,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:16:46,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:16:46,614 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:16:46,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:16:46,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:16:46,653 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:16:46,653 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:16:46,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:16:46,654 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:16:46,654 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:16:46,654 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:16:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-25 04:16:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 04:16:46,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:46,689 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] [2020-09-25 04:16:46,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:46,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:46,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1283430724, now seen corresponding path program 1 times [2020-09-25 04:16:46,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:46,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078476578] [2020-09-25 04:16:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:47,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 04:16:47,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:16:47,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-25 04:16:47,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:47,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 04:16:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:16:47,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:16:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:47,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:47,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:16:47,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:16:47,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:47,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:47,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 04:16:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:47,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:47,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:16:47,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:16:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:16:47,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:47,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:16:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:16:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:47,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:47,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:47,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:16:47,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:16:47,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:47,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 04:16:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:47,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:16:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:47,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:47,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:16:47,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:16:47,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:47,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:16:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:47,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:16:47,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078476578] [2020-09-25 04:16:47,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:16:47,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:16:47,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959643193] [2020-09-25 04:16:47,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:16:47,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:16:47,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:16:47,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:16:47,509 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-25 04:16:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:16:47,776 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-25 04:16:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:16:47,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 04:16:47,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:16:47,793 INFO L225 Difference]: With dead ends: 132 [2020-09-25 04:16:47,794 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:16:47,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:16:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:16:47,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 04:16:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 04:16:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-25 04:16:47,865 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-25 04:16:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:16:47,866 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-25 04:16:47,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:16:47,867 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-25 04:16:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 04:16:47,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:47,883 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] [2020-09-25 04:16:47,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:16:47,884 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:47,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:47,884 INFO L82 PathProgramCache]: Analyzing trace with hash -611644563, now seen corresponding path program 1 times [2020-09-25 04:16:47,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:47,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571501301] [2020-09-25 04:16:47,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 04:16:48,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 04:16:48,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 04:16:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:16:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:16:48,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:16:48,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:48,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 04:16:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:16:48,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 04:16:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:16:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:16:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:16:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 04:16:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:16:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 04:16:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:16:48,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:16:48,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:16:48,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:16:48,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571501301] [2020-09-25 04:16:48,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:16:48,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:16:48,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851270157] [2020-09-25 04:16:48,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:16:48,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:16:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:16:48,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:16:48,413 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-25 04:16:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:16:48,602 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-25 04:16:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:16:48,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-25 04:16:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:16:48,607 INFO L225 Difference]: With dead ends: 87 [2020-09-25 04:16:48,607 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 04:16:48,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:16:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 04:16:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-25 04:16:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 04:16:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 04:16:48,624 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-25 04:16:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:16:48,624 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 04:16:48,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:16:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 04:16:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 04:16:48,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:48,627 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] [2020-09-25 04:16:48,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:16:48,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:48,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:48,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1640490466, now seen corresponding path program 1 times [2020-09-25 04:16:48,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:48,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750687189] [2020-09-25 04:16:48,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 04:16:48,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 04:16:48,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 04:16:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:16:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:16:48,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:16:48,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:48,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:48,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 04:16:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:16:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 04:16:48,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:16:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:16:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:16:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 04:16:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:48,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:16:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 04:16:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:16:49,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:16:49,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:16:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:49,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:16:49,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750687189] [2020-09-25 04:16:49,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:16:49,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:16:49,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040083192] [2020-09-25 04:16:49,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:16:49,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:16:49,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:16:49,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:16:49,041 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 04:16:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:16:49,249 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-25 04:16:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:16:49,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-25 04:16:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:16:49,252 INFO L225 Difference]: With dead ends: 91 [2020-09-25 04:16:49,252 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 04:16:49,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:16:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 04:16:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-25 04:16:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 04:16:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 04:16:49,263 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 47 [2020-09-25 04:16:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:16:49,264 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 04:16:49,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:16:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 04:16:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 04:16:49,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:49,266 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] [2020-09-25 04:16:49,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:16:49,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:49,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1219096216, now seen corresponding path program 1 times [2020-09-25 04:16:49,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:49,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860455167] [2020-09-25 04:16:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 04:16:49,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 04:16:49,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:16:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:16:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:16:49,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:16:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 04:16:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 04:16:49,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:16:49,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:16:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:49,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:16:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:16:49,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 04:16:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:49,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:16:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:49,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 04:16:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:16:49,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:16:49,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:16:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:16:49,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860455167] [2020-09-25 04:16:49,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:16:49,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:16:49,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459034298] [2020-09-25 04:16:49,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:16:49,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:16:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:16:49,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:16:49,656 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 04:16:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:16:49,814 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-25 04:16:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:16:49,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-09-25 04:16:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:16:49,816 INFO L225 Difference]: With dead ends: 95 [2020-09-25 04:16:49,816 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 04:16:49,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:16:49,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 04:16:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-09-25 04:16:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 04:16:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 04:16:49,826 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 48 [2020-09-25 04:16:49,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:16:49,827 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 04:16:49,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:16:49,827 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 04:16:49,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 04:16:49,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:49,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:16:49,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:16:49,829 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:49,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1210069817, now seen corresponding path program 1 times [2020-09-25 04:16:49,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:49,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276052952] [2020-09-25 04:16:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 04:16:49,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 04:16:49,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:16:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:16:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:16:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:49,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:49,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:16:49,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:16:49,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:49,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:50,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 04:16:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:50,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:16:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 04:16:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:50,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 04:16:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:16:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:16:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:16:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 04:16:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:50,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:16:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:16:50,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 04:16:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:50,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:50,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 04:16:50,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:50,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:16:50,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:50,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:16:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:16:50,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276052952] [2020-09-25 04:16:50,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:16:50,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:16:50,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869146698] [2020-09-25 04:16:50,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:16:50,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:16:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:16:50,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:16:50,233 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 04:16:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:16:50,414 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-25 04:16:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:16:50,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 04:16:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:16:50,416 INFO L225 Difference]: With dead ends: 91 [2020-09-25 04:16:50,417 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 04:16:50,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:16:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 04:16:50,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-25 04:16:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 04:16:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 04:16:50,426 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-25 04:16:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:16:50,427 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 04:16:50,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:16:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 04:16:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 04:16:50,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:50,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:16:50,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:16:50,429 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash 815123193, now seen corresponding path program 1 times [2020-09-25 04:16:50,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:50,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223369141] [2020-09-25 04:16:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:16:50,452 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:16:50,452 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:16:50,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:16:50,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:16:50 BoogieIcfgContainer [2020-09-25 04:16:50,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:16:50,492 INFO L168 Benchmark]: Toolchain (without parser) took 4857.90 ms. Allocated memory was 146.3 MB in the beginning and 245.9 MB in the end (delta: 99.6 MB). Free memory was 102.6 MB in the beginning and 158.9 MB in the end (delta: -56.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:50,493 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:16:50,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.66 ms. Allocated memory is still 146.3 MB. Free memory was 101.9 MB in the beginning and 91.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:50,495 INFO L168 Benchmark]: Boogie Preprocessor took 145.17 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.2 MB in the beginning and 180.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:50,497 INFO L168 Benchmark]: RCFGBuilder took 450.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 159.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:50,498 INFO L168 Benchmark]: TraceAbstraction took 3927.93 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 158.4 MB in the beginning and 158.9 MB in the end (delta: -539.8 kB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:16:50,502 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.66 ms. Allocated memory is still 146.3 MB. Free memory was 101.9 MB in the beginning and 91.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.17 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.2 MB in the beginning and 180.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 159.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3927.93 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 158.4 MB in the beginning and 158.9 MB in the end (delta: -539.8 kB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 61. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] RET, EXPR __fpclassify_float(x) [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L62] RET, EXPR fmax_float(x, y) [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) [L54] return x != x; [L64] RET, EXPR isnan_float(res) [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 371 SDtfs, 99 SDslu, 729 SDs, 0 SdLazy, 515 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 19508 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...