./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/loop-industry-pattern/mod3.c.v+sep-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aeb2c2f6d8fcd33ad55644c16c42ea82f5ce9b6c ............................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:51:55,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:51:55,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:51:55,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:51:55,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:51:55,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:51:55,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:51:55,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:51:55,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:51:55,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:51:55,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:51:55,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:51:55,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:51:55,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:51:55,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:51:55,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:51:55,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:51:55,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:51:55,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:51:55,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:51:55,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:51:55,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:51:55,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:51:55,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:51:55,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:51:55,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:51:55,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:51:55,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:51:55,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:51:55,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:51:55,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:51:55,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:51:55,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:51:55,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:51:55,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:51:55,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:51:55,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:51:55,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:51:55,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:51:55,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:51:55,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:51:55,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:51:55,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:51:55,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:51:55,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:51:55,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:51:55,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:51:55,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:51:55,218 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:51:55,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:51:55,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:51:55,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:51:55,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:51:55,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:51:55,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:51:55,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:51:55,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:51:55,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:51:55,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:51:55,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:51:55,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:51:55,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:51:55,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:51:55,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:51:55,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:51:55,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:51:55,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:51:55,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:51:55,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:51:55,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:51:55,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:51:55,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:51:55,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aeb2c2f6d8fcd33ad55644c16c42ea82f5ce9b6c [2021-08-26 03:51:55,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:51:55,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:51:55,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:51:55,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:51:55,507 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:51:55,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2021-08-26 03:51:55,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cd431d7e/84f42b997a2545b19a739b4d22d93d90/FLAG765667b27 [2021-08-26 03:51:55,924 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:51:55,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2021-08-26 03:51:55,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cd431d7e/84f42b997a2545b19a739b4d22d93d90/FLAG765667b27 [2021-08-26 03:51:55,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cd431d7e/84f42b997a2545b19a739b4d22d93d90 [2021-08-26 03:51:55,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:51:55,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:51:55,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:51:55,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:51:55,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:51:55,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:55" (1/1) ... [2021-08-26 03:51:55,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da5eb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:55, skipping insertion in model container [2021-08-26 03:51:55,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:55" (1/1) ... [2021-08-26 03:51:55,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:51:55,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:51:56,107 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/loop-industry-pattern/mod3.c.v+sep-reducer.c[2031,2044] [2021-08-26 03:51:56,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:51:56,126 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:51:56,170 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/loop-industry-pattern/mod3.c.v+sep-reducer.c[2031,2044] [2021-08-26 03:51:56,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:51:56,191 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:51:56,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56 WrapperNode [2021-08-26 03:51:56,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:51:56,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:51:56,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:51:56,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:51:56,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:51:56,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:51:56,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:51:56,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:51:56,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:51:56,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:51:56,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:51:56,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:51:56,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (1/1) ... [2021-08-26 03:51:56,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:51:56,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:51:56,286 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) [2021-08-26 03:51:56,310 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 [2021-08-26 03:51:56,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:51:56,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:51:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:51:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:52:05,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:52:05,267 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 03:52:05,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:52:05 BoogieIcfgContainer [2021-08-26 03:52:05,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:52:05,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:52:05,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:52:05,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:52:05,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:51:55" (1/3) ... [2021-08-26 03:52:05,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4328637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:52:05, skipping insertion in model container [2021-08-26 03:52:05,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:56" (2/3) ... [2021-08-26 03:52:05,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4328637a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:52:05, skipping insertion in model container [2021-08-26 03:52:05,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:52:05" (3/3) ... [2021-08-26 03:52:05,273 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+sep-reducer.c [2021-08-26 03:52:05,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:52:05,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:52:05,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:52:05,307 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 [2021-08-26 03:52:05,307 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:52:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 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) [2021-08-26 03:52:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 03:52:05,320 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:52:05,320 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:52:05,321 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:52:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:52:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1060254097, now seen corresponding path program 1 times [2021-08-26 03:52:05,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:52:05,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881666196] [2021-08-26 03:52:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:52:05,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:52:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:52:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:52:05,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:52:05,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881666196] [2021-08-26 03:52:05,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881666196] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:52:05,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:52:05,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:52:05,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503075698] [2021-08-26 03:52:05,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:52:05,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:52:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:52:05,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:52:05,675 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 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, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-08-26 03:52:23,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:52:23,141 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2021-08-26 03:52:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:52:23,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Word has length 11 [2021-08-26 03:52:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:52:23,147 INFO L225 Difference]: With dead ends: 61 [2021-08-26 03:52:23,148 INFO L226 Difference]: Without dead ends: 26 [2021-08-26 03:52:23,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:52:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-26 03:52:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-08-26 03:52:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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) [2021-08-26 03:52:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-08-26 03:52:23,174 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 11 [2021-08-26 03:52:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:52:23,175 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-08-26 03:52:23,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-08-26 03:52:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-08-26 03:52:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 03:52:23,176 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:52:23,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:52:23,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:52:23,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:52:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:52:23,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1251142831, now seen corresponding path program 1 times [2021-08-26 03:52:23,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:52:23,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509475870] [2021-08-26 03:52:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:52:23,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:52:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:52:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:52:23,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:52:23,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509475870] [2021-08-26 03:52:23,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509475870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:52:23,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:52:23,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:52:23,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193692413] [2021-08-26 03:52:23,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:52:23,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:52:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:52:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:52:23,395 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-08-26 03:52:36,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:52:36,419 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2021-08-26 03:52:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:52:36,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Word has length 12 [2021-08-26 03:52:36,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:52:36,420 INFO L225 Difference]: With dead ends: 54 [2021-08-26 03:52:36,421 INFO L226 Difference]: Without dead ends: 29 [2021-08-26 03:52:36,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:52:36,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-26 03:52:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-26 03:52:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 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) [2021-08-26 03:52:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-08-26 03:52:36,425 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 12 [2021-08-26 03:52:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:52:36,425 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-26 03:52:36,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-08-26 03:52:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-08-26 03:52:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 03:52:36,426 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:52:36,426 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:52:36,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 03:52:36,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:52:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:52:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash 713351574, now seen corresponding path program 1 times [2021-08-26 03:52:36,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:52:36,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557645833] [2021-08-26 03:52:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:52:36,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:52:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:52:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:52:36,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:52:36,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557645833] [2021-08-26 03:52:36,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557645833] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:52:36,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:52:36,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:52:36,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592446022] [2021-08-26 03:52:36,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:52:36,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:52:36,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:52:36,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:52:36,593 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-08-26 03:52:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:52:49,698 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2021-08-26 03:52:49,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:52:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-08-26 03:52:49,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:52:49,699 INFO L225 Difference]: With dead ends: 55 [2021-08-26 03:52:49,699 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:52:49,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:52:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:52:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:52:49,699 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) [2021-08-26 03:52:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:52:49,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-26 03:52:49,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:52:49,700 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:52:49,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-08-26 03:52:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:52:49,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:52:49,702 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:52:49,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 03:52:49,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:52:49,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:49,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:49,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:49,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:49,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:49,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:49,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:52:49,729 INFO L857 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2021-08-26 03:52:49,730 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 83) no Hoare annotation was computed. [2021-08-26 03:52:49,730 INFO L853 garLoopResultBuilder]: At program point L52(lines 24 141) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse0 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse2) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 (* .cse1 (- 3)) .cse2) 4294967296))))))) [2021-08-26 03:52:49,730 INFO L860 garLoopResultBuilder]: At program point L135(lines 35 140) the Hoare annotation is: true [2021-08-26 03:52:49,730 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:52:49,730 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:52:49,731 INFO L853 garLoopResultBuilder]: At program point L61(lines 36 112) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse0 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse2) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 (* .cse1 (- 3)) .cse2) 4294967296))))))) [2021-08-26 03:52:49,731 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:52:49,731 INFO L860 garLoopResultBuilder]: At program point L123(lines 35 140) the Hoare annotation is: true [2021-08-26 03:52:49,731 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 141) no Hoare annotation was computed. [2021-08-26 03:52:49,731 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2021-08-26 03:52:49,731 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 111) no Hoare annotation was computed. [2021-08-26 03:52:49,731 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:52:49,732 INFO L857 garLoopResultBuilder]: For program point L95(lines 95 104) no Hoare annotation was computed. [2021-08-26 03:52:49,732 INFO L860 garLoopResultBuilder]: At program point L145(lines 15 147) the Hoare annotation is: true [2021-08-26 03:52:49,732 INFO L853 garLoopResultBuilder]: At program point L42(lines 24 141) the Hoare annotation is: (<= ULTIMATE.start_main_~main__x~0 (let ((.cse0 (div ULTIMATE.start_main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ ULTIMATE.start_main_~main__x~0 .cse2) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ ULTIMATE.start_main_~main__x~0 (* .cse1 (- 3)) .cse2) 4294967296))))))) [2021-08-26 03:52:49,732 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 82) no Hoare annotation was computed. [2021-08-26 03:52:49,732 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 110) no Hoare annotation was computed. [2021-08-26 03:52:49,732 INFO L857 garLoopResultBuilder]: For program point L22(lines 22 146) no Hoare annotation was computed. [2021-08-26 03:52:49,732 INFO L857 garLoopResultBuilder]: For program point L117(lines 117 139) no Hoare annotation was computed. [2021-08-26 03:52:49,733 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 84) no Hoare annotation was computed. [2021-08-26 03:52:49,733 INFO L860 garLoopResultBuilder]: At program point L138(lines 16 147) the Hoare annotation is: true [2021-08-26 03:52:49,733 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 140) no Hoare annotation was computed. [2021-08-26 03:52:49,736 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:52:49,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:52:49 BoogieIcfgContainer [2021-08-26 03:52:49,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:52:49,753 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:52:49,753 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:52:49,753 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:52:49,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:52:05" (3/4) ... [2021-08-26 03:52:49,756 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:52:49,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 03:52:49,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:52:49,764 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:52:49,765 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:52:49,797 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:52:49,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:52:49,798 INFO L168 Benchmark]: Toolchain (without parser) took 53854.08 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.7 MB in the beginning and 53.5 MB in the end (delta: -21.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:49,798 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:52:49,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.81 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.5 MB in the beginning and 56.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:49,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.29 ms. Allocated memory is still 73.4 MB. Free memory was 56.7 MB in the beginning and 55.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:52:49,799 INFO L168 Benchmark]: Boogie Preprocessor took 28.96 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 54.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:52:49,799 INFO L168 Benchmark]: RCFGBuilder took 9006.88 ms. Allocated memory is still 73.4 MB. Free memory was 54.0 MB in the beginning and 55.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:49,800 INFO L168 Benchmark]: TraceAbstraction took 44483.68 ms. Allocated memory is still 73.4 MB. Free memory was 54.9 MB in the beginning and 29.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:49,800 INFO L168 Benchmark]: Witness Printer took 43.88 ms. Allocated memory is still 73.4 MB. Free memory was 29.6 MB in the beginning and 53.5 MB in the end (delta: -23.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:52:49,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.81 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.5 MB in the beginning and 56.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.29 ms. Allocated memory is still 73.4 MB. Free memory was 56.7 MB in the beginning and 55.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.96 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 54.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 9006.88 ms. Allocated memory is still 73.4 MB. Free memory was 54.0 MB in the beginning and 55.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44483.68 ms. Allocated memory is still 73.4 MB. Free memory was 54.9 MB in the beginning and 29.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Witness Printer took 43.88 ms. Allocated memory is still 73.4 MB. Free memory was 29.6 MB in the beginning and 53.5 MB in the end (delta: -23.9 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: 97]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44433.6ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 6.2ms, AutomataDifference: 43622.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 27.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 19 SDslu, 114 SDs, 0 SdLazy, 48 SolverSat, 6 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 40256.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 17 NumberOfFragments, 127 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.2ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 16.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 128.9ms SatisfiabilityAnalysisTime, 502.6ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) + 4294967296 * ((main__x + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3 + main__x / 4294967296 * -4294967296) / 4294967296) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) + 4294967296 * ((main__x + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3 + main__x / 4294967296 * -4294967296) / 4294967296) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x + main__x / 4294967296 * -4294967296) / 3) + 4294967296 * ((main__x + (main__x + main__x / 4294967296 * -4294967296) / 3 * -3 + main__x / 4294967296 * -4294967296) / 4294967296) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 03:52:49,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...