./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/gcd_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/gcd_1.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 2e4ba95c1f8f1c91d02e36bdef8a9bebafd320cc ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 11:25:35,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 11:25:35,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 11:25:35,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 11:25:35,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 11:25:35,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 11:25:35,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 11:25:35,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 11:25:35,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 11:25:35,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 11:25:35,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 11:25:35,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 11:25:35,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 11:25:35,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 11:25:35,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 11:25:35,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 11:25:35,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 11:25:35,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 11:25:35,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 11:25:35,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 11:25:35,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 11:25:35,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 11:25:35,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 11:25:35,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 11:25:35,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 11:25:35,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 11:25:35,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 11:25:35,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 11:25:35,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 11:25:35,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 11:25:35,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 11:25:35,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 11:25:35,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 11:25:35,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 11:25:35,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 11:25:35,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 11:25:35,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 11:25:35,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 11:25:35,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 11:25:35,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 11:25:35,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 11:25:35,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-27 11:25:36,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 11:25:36,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 11:25:36,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 11:25:36,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 11:25:36,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 11:25:36,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 11:25:36,004 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 11:25:36,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 11:25:36,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 11:25:36,004 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 11:25:36,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 11:25:36,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 11:25:36,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 11:25:36,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 11:25:36,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 11:25:36,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 11:25:36,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 11:25:36,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:25:36,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 11:25:36,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 11:25:36,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 11:25:36,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 11:25:36,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 11:25:36,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 11:25:36,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 11:25:36,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e4ba95c1f8f1c91d02e36bdef8a9bebafd320cc [2021-08-27 11:25:36,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 11:25:36,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 11:25:36,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 11:25:36,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 11:25:36,358 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 11:25:36,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/gcd_1.c [2021-08-27 11:25:36,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bd36da4/d78d1f7ad77e4ceeacd5a062892d5651/FLAG8262e50a2 [2021-08-27 11:25:36,909 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 11:25:36,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_1.c [2021-08-27 11:25:36,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bd36da4/d78d1f7ad77e4ceeacd5a062892d5651/FLAG8262e50a2 [2021-08-27 11:25:37,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bd36da4/d78d1f7ad77e4ceeacd5a062892d5651 [2021-08-27 11:25:37,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 11:25:37,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 11:25:37,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 11:25:37,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 11:25:37,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 11:25:37,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d43b6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37, skipping insertion in model container [2021-08-27 11:25:37,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 11:25:37,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 11:25:37,600 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_1.c[359,372] [2021-08-27 11:25:37,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:25:37,621 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 11:25:37,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/gcd_1.c[359,372] [2021-08-27 11:25:37,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:25:37,644 INFO L208 MainTranslator]: Completed translation [2021-08-27 11:25:37,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37 WrapperNode [2021-08-27 11:25:37,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 11:25:37,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 11:25:37,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 11:25:37,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 11:25:37,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 11:25:37,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 11:25:37,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 11:25:37,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 11:25:37,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 11:25:37,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 11:25:37,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 11:25:37,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 11:25:37,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (1/1) ... [2021-08-27 11:25:37,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:25:37,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:25:37,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 11:25:37,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 11:25:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 11:25:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 11:25:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 11:25:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 11:25:38,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 11:25:38,073 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-27 11:25:38,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:25:38 BoogieIcfgContainer [2021-08-27 11:25:38,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 11:25:38,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 11:25:38,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 11:25:38,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 11:25:38,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:25:37" (1/3) ... [2021-08-27 11:25:38,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4489c5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:25:38, skipping insertion in model container [2021-08-27 11:25:38,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:25:37" (2/3) ... [2021-08-27 11:25:38,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4489c5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:25:38, skipping insertion in model container [2021-08-27 11:25:38,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:25:38" (3/3) ... [2021-08-27 11:25:38,081 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1.c [2021-08-27 11:25:38,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 11:25:38,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 11:25:38,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 11:25:38,134 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 11:25:38,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 11:25:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.588235294117647) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 11:25:38,161 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:25:38,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 11:25:38,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:25:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:25:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash 28693795, now seen corresponding path program 1 times [2021-08-27 11:25:38,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:25:38,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508785341] [2021-08-27 11:25:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:25:38,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:25:38,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 11:25:38,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144048222] [2021-08-27 11:25:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:25:38,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:25:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:25:38,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:25:38,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 11:25:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:25:38,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 11:25:38,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:25:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:25:38,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:25:38,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508785341] [2021-08-27 11:25:38,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 11:25:38,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144048222] [2021-08-27 11:25:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144048222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:25:38,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:25:38,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 11:25:38,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590613220] [2021-08-27 11:25:38,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:25:38,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:25:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:25:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:25:38,503 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.588235294117647) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:25:38,563 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-08-27 11:25:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 11:25:38,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 11:25:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:25:38,572 INFO L225 Difference]: With dead ends: 39 [2021-08-27 11:25:38,572 INFO L226 Difference]: Without dead ends: 12 [2021-08-27 11:25:38,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:25:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-08-27 11:25:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-08-27 11:25:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-27 11:25:38,598 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-08-27 11:25:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:25:38,599 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-27 11:25:38,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-27 11:25:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 11:25:38,599 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:25:38,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 11:25:38,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 11:25:38,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-27 11:25:38,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:25:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:25:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash 889507687, now seen corresponding path program 1 times [2021-08-27 11:25:38,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:25:38,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172404164] [2021-08-27 11:25:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:25:38,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:25:38,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 11:25:38,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985886967] [2021-08-27 11:25:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:25:38,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:25:38,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:25:38,832 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:25:38,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 11:25:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:25:38,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 11:25:38,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:25:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:25:38,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:25:38,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172404164] [2021-08-27 11:25:38,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 11:25:38,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985886967] [2021-08-27 11:25:38,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985886967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:25:38,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:25:38,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:25:38,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406864516] [2021-08-27 11:25:38,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 11:25:38,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:25:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 11:25:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:25:38,940 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:25:38,953 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-08-27 11:25:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 11:25:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-27 11:25:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:25:38,955 INFO L225 Difference]: With dead ends: 12 [2021-08-27 11:25:38,955 INFO L226 Difference]: Without dead ends: 11 [2021-08-27 11:25:38,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:25:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-27 11:25:38,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-27 11:25:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-08-27 11:25:38,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-08-27 11:25:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:25:38,963 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-08-27 11:25:38,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-08-27 11:25:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 11:25:38,967 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:25:38,968 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 11:25:38,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 11:25:39,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-27 11:25:39,185 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:25:39,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:25:39,186 INFO L82 PathProgramCache]: Analyzing trace with hash 889513709, now seen corresponding path program 1 times [2021-08-27 11:25:39,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:25:39,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163500632] [2021-08-27 11:25:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:25:39,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:25:39,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-27 11:25:39,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569235419] [2021-08-27 11:25:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:25:39,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:25:39,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:25:39,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:25:39,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 11:25:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:25:39,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 11:25:39,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:25:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:25:39,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:25:39,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163500632] [2021-08-27 11:25:39,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-27 11:25:39,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569235419] [2021-08-27 11:25:39,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569235419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:25:39,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:25:39,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:25:39,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540792214] [2021-08-27 11:25:39,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 11:25:39,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:25:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 11:25:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:25:39,310 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:25:39,312 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-08-27 11:25:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 11:25:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-27 11:25:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:25:39,313 INFO L225 Difference]: With dead ends: 11 [2021-08-27 11:25:39,313 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 11:25:39,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:25:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 11:25:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 11:25:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 11:25:39,314 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-08-27 11:25:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:25:39,315 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 11:25:39,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:25:39,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 11:25:39,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 11:25:39,318 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:25:39,318 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:25:39,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:25:39,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:25:39,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 11:25:39,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:25:39,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 11:25:39,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:25:39,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:25:39,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:25:39,574 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-08-27 11:25:39,574 INFO L857 garLoopResultBuilder]: For program point L19-1(lines 13 25) no Hoare annotation was computed. [2021-08-27 11:25:39,574 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-08-27 11:25:39,575 INFO L853 garLoopResultBuilder]: At program point L40(lines 28 41) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x~0 128)) [2021-08-27 11:25:39,575 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-27 11:25:39,575 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-27 11:25:39,575 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-08-27 11:25:39,575 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 11:25:39,576 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 11:25:39,576 INFO L853 garLoopResultBuilder]: At program point L24(lines 12 25) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x~0 128)) [2021-08-27 11:25:39,576 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-08-27 11:25:39,578 INFO L857 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2021-08-27 11:25:39,579 INFO L857 garLoopResultBuilder]: For program point L16-2(line 16) no Hoare annotation was computed. [2021-08-27 11:25:39,579 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 13 25) no Hoare annotation was computed. [2021-08-27 11:25:39,579 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-27 11:25:39,579 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-08-27 11:25:39,579 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 11:25:39,580 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-08-27 11:25:39,580 INFO L857 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-08-27 11:25:39,580 INFO L857 garLoopResultBuilder]: For program point L34(lines 34 38) no Hoare annotation was computed. [2021-08-27 11:25:39,580 INFO L853 garLoopResultBuilder]: At program point L34-1(lines 34 38) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x~0 128)) [2021-08-27 11:25:39,581 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-08-27 11:25:39,584 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 11:25:39,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:25:39 BoogieIcfgContainer [2021-08-27 11:25:39,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 11:25:39,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 11:25:39,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 11:25:39,599 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 11:25:39,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:25:38" (3/4) ... [2021-08-27 11:25:39,605 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 11:25:39,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-27 11:25:39,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-27 11:25:39,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:25:39,616 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:25:39,659 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 11:25:39,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 11:25:39,665 INFO L168 Benchmark]: Toolchain (without parser) took 2243.96 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 37.6 MB in the beginning and 27.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-08-27 11:25:39,666 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:25:39,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.68 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 28.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 11:25:39,668 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.73 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 42.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 11:25:39,668 INFO L168 Benchmark]: Boogie Preprocessor took 42.31 ms. Allocated memory is still 58.7 MB. Free memory was 42.2 MB in the beginning and 41.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:25:39,669 INFO L168 Benchmark]: RCFGBuilder took 302.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 27.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 11:25:39,669 INFO L168 Benchmark]: TraceAbstraction took 1521.39 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 29.6 MB in the end (delta: -2.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:25:39,669 INFO L168 Benchmark]: Witness Printer took 63.61 ms. Allocated memory is still 71.3 MB. Free memory was 29.6 MB in the beginning and 27.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:25:39,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 217.68 ms. Allocated memory is still 58.7 MB. Free memory was 37.4 MB in the beginning and 28.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.73 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 42.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.31 ms. Allocated memory is still 58.7 MB. Free memory was 42.2 MB in the beginning and 41.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 302.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 27.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1521.39 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 29.6 MB in the end (delta: -2.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 63.61 ms. Allocated memory is still 71.3 MB. Free memory was 29.6 MB in the beginning and 27.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1457.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 22.3ms, AutomataDifference: 108.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 36.9ms, InitialAbstractionConstructionTime: 8.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 46 SDslu, 18 SDs, 0 SdLazy, 17 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 26.9ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 24.2ms SsaConstructionTime, 54.4ms SatisfiabilityAnalysisTime, 215.0ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 4 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 <= x + 128 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 <= x + 128 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 <= x + 128 RESULT: Ultimate proved your program to be correct! [2021-08-27 11:25:39,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...