./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 826aed75f4d0573d3f88e47a5e506cc04e66838c ................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: null --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:25:15,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:25:15,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:25:15,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:25:15,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:25:15,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:25:15,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:25:15,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:25:15,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:25:15,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:25:15,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:25:15,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:25:15,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:25:15,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:25:15,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:25:15,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:25:15,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:25:15,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:25:15,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:25:15,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:25:15,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:25:15,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:25:15,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:25:15,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:25:15,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:25:15,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:25:15,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:25:15,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:25:15,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:25:15,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:25:15,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:25:15,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:25:15,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:25:15,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:25:15,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:25:15,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:25:15,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:25:15,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:25:15,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:25:15,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:25:15,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:25:15,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-07-29 01:25:15,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:25:15,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:25:15,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:25:15,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:25:15,220 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:25:15,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:25:15,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:25:15,221 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:25:15,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:25:15,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:25:15,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:25:15,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:25:15,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:25:15,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:25:15,224 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:25:15,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:25:15,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:25:15,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:25:15,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:25:15,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:25:15,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:25:15,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:25:15,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:25:15,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:25:15,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:25:15,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:25:15,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:25:15,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:25:15,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:25:15,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:25:15,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:25:15,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 826aed75f4d0573d3f88e47a5e506cc04e66838c [2020-07-29 01:25:15,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:25:15,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:25:15,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:25:15,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:25:15,527 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:25:15,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c [2020-07-29 01:25:15,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174528039/9965dbda0aae49c3bfdddf15b0ab66fb/FLAG6f0333b42 [2020-07-29 01:25:16,057 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:25:16,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2.c.cil.c [2020-07-29 01:25:16,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174528039/9965dbda0aae49c3bfdddf15b0ab66fb/FLAG6f0333b42 [2020-07-29 01:25:16,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174528039/9965dbda0aae49c3bfdddf15b0ab66fb [2020-07-29 01:25:16,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:25:16,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:25:16,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:25:16,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:25:16,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:25:16,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1d6c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16, skipping insertion in model container [2020-07-29 01:25:16,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:25:16,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:25:16,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:25:16,704 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:25:16,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:25:16,849 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:25:16,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16 WrapperNode [2020-07-29 01:25:16,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:25:16,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:25:16,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:25:16,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:25:16,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:25:16,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:25:16,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:25:16,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:25:16,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... [2020-07-29 01:25:16,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:25:16,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:25:16,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:25:16,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:25:16,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-29 01:25:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:25:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:25:18,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:25:18,048 INFO L295 CfgBuilder]: Removed 34 assume(true) statements. [2020-07-29 01:25:18,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:25:18 BoogieIcfgContainer [2020-07-29 01:25:18,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:25:18,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:25:18,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:25:18,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:25:18,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:25:16" (1/3) ... [2020-07-29 01:25:18,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14536017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:25:18, skipping insertion in model container [2020-07-29 01:25:18,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:25:16" (2/3) ... [2020-07-29 01:25:18,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14536017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:25:18, skipping insertion in model container [2020-07-29 01:25:18,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:25:18" (3/3) ... [2020-07-29 01:25:18,070 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-2.c.cil.c [2020-07-29 01:25:18,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:25:18,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 48 error locations. [2020-07-29 01:25:18,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2020-07-29 01:25:18,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:25:18,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:25:18,143 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:25:18,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:25:18,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:25:18,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:25:18,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:25:18,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:25:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-07-29 01:25:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-29 01:25:18,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:25:18,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-29 01:25:18,196 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr46ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:25:18,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:25:18,204 INFO L82 PathProgramCache]: Analyzing trace with hash 922901410, now seen corresponding path program 1 times [2020-07-29 01:25:18,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:25:18,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986149094] [2020-07-29 01:25:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:25:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:25:18,369 INFO L280 TraceCheckUtils]: 0: Hoare triple {173#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;assume -128 <= main_#t~nondet1 && main_#t~nondet1 <= 127;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;assume -128 <= main_#t~nondet3 && main_#t~nondet3 <= 127;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; {173#true} is VALID [2020-07-29 01:25:18,369 INFO L280 TraceCheckUtils]: 1: Hoare triple {173#true} assume !(0 == base2flt_~m % 4294967296); {173#true} is VALID [2020-07-29 01:25:18,370 INFO L280 TraceCheckUtils]: 2: Hoare triple {173#true} assume !(base2flt_~m % 4294967296 < 16777216); {173#true} is VALID [2020-07-29 01:25:18,371 INFO L280 TraceCheckUtils]: 3: Hoare triple {173#true} assume !true; {174#false} is VALID [2020-07-29 01:25:18,371 INFO L280 TraceCheckUtils]: 4: Hoare triple {174#false} base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216)); {174#false} is VALID [2020-07-29 01:25:18,372 INFO L280 TraceCheckUtils]: 5: Hoare triple {174#false} assume !(128 + base2flt_~e <= 2147483647); {174#false} is VALID [2020-07-29 01:25:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:25:18,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986149094] [2020-07-29 01:25:18,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:25:18,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-29 01:25:18,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016012063] [2020-07-29 01:25:18,382 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-29 01:25:18,383 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:25:18,387 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-29 01:25:18,405 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:25:18,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-29 01:25:18,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:25:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-29 01:25:18,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-29 01:25:18,417 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2020-07-29 01:25:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:25:18,666 INFO L93 Difference]: Finished difference Result 319 states and 409 transitions. [2020-07-29 01:25:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-29 01:25:18,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-07-29 01:25:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:25:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-29 01:25:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 409 transitions. [2020-07-29 01:25:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-29 01:25:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 409 transitions. [2020-07-29 01:25:18,690 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 409 transitions. [2020-07-29 01:25:19,215 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 409 edges. 409 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:25:19,240 INFO L225 Difference]: With dead ends: 319 [2020-07-29 01:25:19,240 INFO L226 Difference]: Without dead ends: 150 [2020-07-29 01:25:19,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-29 01:25:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-07-29 01:25:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-07-29 01:25:19,300 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:25:19,300 INFO L82 GeneralOperation]: Start isEquivalent. First operand 150 states. Second operand 150 states. [2020-07-29 01:25:19,301 INFO L74 IsIncluded]: Start isIncluded. First operand 150 states. Second operand 150 states. [2020-07-29 01:25:19,301 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 150 states. [2020-07-29 01:25:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:25:19,311 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2020-07-29 01:25:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-07-29 01:25:19,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:25:19,313 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:25:19,313 INFO L74 IsIncluded]: Start isIncluded. First operand 150 states. Second operand 150 states. [2020-07-29 01:25:19,313 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 150 states. [2020-07-29 01:25:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:25:19,322 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2020-07-29 01:25:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-07-29 01:25:19,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:25:19,324 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:25:19,324 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:25:19,324 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:25:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-29 01:25:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2020-07-29 01:25:19,333 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 6 [2020-07-29 01:25:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:25:19,334 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2020-07-29 01:25:19,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-29 01:25:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2020-07-29 01:25:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-29 01:25:19,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:25:19,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-29 01:25:19,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:25:19,336 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr46ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:25:19,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:25:19,336 INFO L82 PathProgramCache]: Analyzing trace with hash 921960144, now seen corresponding path program 1 times [2020-07-29 01:25:19,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:25:19,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168614489] [2020-07-29 01:25:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:25:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:25:19,396 INFO L280 TraceCheckUtils]: 0: Hoare triple {1015#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;assume -128 <= main_#t~nondet1 && main_#t~nondet1 <= 127;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;assume -128 <= main_#t~nondet3 && main_#t~nondet3 <= 127;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; {1017#(<= ULTIMATE.start_base2flt_~e 0)} is VALID [2020-07-29 01:25:19,398 INFO L280 TraceCheckUtils]: 1: Hoare triple {1017#(<= ULTIMATE.start_base2flt_~e 0)} assume !(0 == base2flt_~m % 4294967296); {1017#(<= ULTIMATE.start_base2flt_~e 0)} is VALID [2020-07-29 01:25:19,398 INFO L280 TraceCheckUtils]: 2: Hoare triple {1017#(<= ULTIMATE.start_base2flt_~e 0)} assume base2flt_~m % 4294967296 < 16777216; {1017#(<= ULTIMATE.start_base2flt_~e 0)} is VALID [2020-07-29 01:25:19,399 INFO L280 TraceCheckUtils]: 3: Hoare triple {1017#(<= ULTIMATE.start_base2flt_~e 0)} assume !false; {1017#(<= ULTIMATE.start_base2flt_~e 0)} is VALID [2020-07-29 01:25:19,400 INFO L280 TraceCheckUtils]: 4: Hoare triple {1017#(<= ULTIMATE.start_base2flt_~e 0)} assume !(base2flt_~e <= -128); {1017#(<= ULTIMATE.start_base2flt_~e 0)} is VALID [2020-07-29 01:25:19,401 INFO L280 TraceCheckUtils]: 5: Hoare triple {1017#(<= ULTIMATE.start_base2flt_~e 0)} assume !(base2flt_~e - 1 <= 2147483647); {1016#false} is VALID [2020-07-29 01:25:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:25:19,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168614489] [2020-07-29 01:25:19,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:25:19,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-29 01:25:19,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112840879] [2020-07-29 01:25:19,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-29 01:25:19,405 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:25:19,405 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 01:25:19,413 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:25:19,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-29 01:25:19,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:25:19,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 01:25:19,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:25:19,415 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 3 states. [2020-07-29 01:25:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:25:19,880 INFO L93 Difference]: Finished difference Result 360 states and 412 transitions. [2020-07-29 01:25:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 01:25:19,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-07-29 01:25:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:25:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:25:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2020-07-29 01:25:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-29 01:25:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2020-07-29 01:25:19,904 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 412 transitions. [2020-07-29 01:25:20,420 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 412 edges. 412 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:25:20,434 INFO L225 Difference]: With dead ends: 360 [2020-07-29 01:25:20,434 INFO L226 Difference]: Without dead ends: 233 [2020-07-29 01:25:20,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 01:25:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-07-29 01:25:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 155. [2020-07-29 01:25:20,484 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:25:20,484 INFO L82 GeneralOperation]: Start isEquivalent. First operand 233 states. Second operand 155 states. [2020-07-29 01:25:20,484 INFO L74 IsIncluded]: Start isIncluded. First operand 233 states. Second operand 155 states. [2020-07-29 01:25:20,484 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 155 states. [2020-07-29 01:25:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:25:20,497 INFO L93 Difference]: Finished difference Result 233 states and 266 transitions. [2020-07-29 01:25:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-07-29 01:25:20,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:25:20,507 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:25:20,508 INFO L74 IsIncluded]: Start isIncluded. First operand 155 states. Second operand 233 states. [2020-07-29 01:25:20,508 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 233 states. [2020-07-29 01:25:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:25:20,520 INFO L93 Difference]: Finished difference Result 233 states and 266 transitions. [2020-07-29 01:25:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-07-29 01:25:20,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:25:20,522 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:25:20,522 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:25:20,522 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:25:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-29 01:25:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 180 transitions. [2020-07-29 01:25:20,530 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 180 transitions. Word has length 6 [2020-07-29 01:25:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:25:20,530 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 180 transitions. [2020-07-29 01:25:20,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-29 01:25:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 180 transitions. [2020-07-29 01:25:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-29 01:25:20,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:25:20,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:25:20,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:25:20,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr46ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:25:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:25:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1484006550, now seen corresponding path program 1 times [2020-07-29 01:25:20,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:25:20,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857784584] [2020-07-29 01:25:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:25:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:25:20,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-29 01:25:20,573 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-29 01:25:20,585 INFO L168 Benchmark]: Toolchain (without parser) took 4150.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.4 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 11.5 GB. [2020-07-29 01:25:20,586 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:25:20,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-07-29 01:25:20,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:25:20,593 INFO L168 Benchmark]: Boogie Preprocessor took 40.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:25:20,594 INFO L168 Benchmark]: RCFGBuilder took 1091.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.1 MB). Peak memory consumption was 87.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:25:20,594 INFO L168 Benchmark]: TraceAbstraction took 2517.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -102.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:25:20,602 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 416.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 76.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1091.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.1 MB). Peak memory consumption was 87.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2517.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -102.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...