./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.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/nla-digbench-scaling/geo3-ll_unwindbound50.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 6d5533b4e642e546ba6236116dd70a2992ad773b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:31:49,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:31:49,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:31:49,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:31:49,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:31:49,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:31:49,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:31:49,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:31:49,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:31:49,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:31:49,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:31:49,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:31:49,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:31:49,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:31:49,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:31:49,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:31:49,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:31:49,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:31:49,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:31:49,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:31:49,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:31:49,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:31:49,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:31:49,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:31:49,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:31:49,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:31:49,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:31:49,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:31:49,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:31:49,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:31:49,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:31:49,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:31:49,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:31:49,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:31:49,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:31:49,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:31:49,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:31:49,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:31:49,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:31:49,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:31:49,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:31:49,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:31:49,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:31:49,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:31:49,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:31:49,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:31:49,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:31:49,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:31:49,874 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:31:49,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:31:49,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:31:49,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:31:49,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:31:49,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:31:49,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:31:49,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:31:49,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:31:49,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:31:49,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:31:49,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:31:49,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:31:49,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:31:49,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:31:49,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:31:49,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:31:49,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5533b4e642e546ba6236116dd70a2992ad773b [2021-08-26 06:31:50,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:31:50,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:31:50,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:31:50,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:31:50,188 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:31:50,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c [2021-08-26 06:31:50,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47eb958de/07a402960f324688aadc57bacede86ba/FLAGd43e1ebba [2021-08-26 06:31:50,640 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:31:50,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c [2021-08-26 06:31:50,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47eb958de/07a402960f324688aadc57bacede86ba/FLAGd43e1ebba [2021-08-26 06:31:51,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47eb958de/07a402960f324688aadc57bacede86ba [2021-08-26 06:31:51,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:31:51,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:31:51,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:31:51,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:31:51,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:31:51,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355c64fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51, skipping insertion in model container [2021-08-26 06:31:51,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:31:51,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:31:51,226 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/nla-digbench-scaling/geo3-ll_unwindbound50.c[525,538] [2021-08-26 06:31:51,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:31:51,248 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:31:51,266 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/nla-digbench-scaling/geo3-ll_unwindbound50.c[525,538] [2021-08-26 06:31:51,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:31:51,324 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:31:51,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51 WrapperNode [2021-08-26 06:31:51,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:31:51,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:31:51,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:31:51,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:31:51,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:31:51,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:31:51,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:31:51,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:31:51,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:31:51,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:31:51,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:31:51,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:31:51,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (1/1) ... [2021-08-26 06:31:51,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:31:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:31:51,434 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 06:31:51,465 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 06:31:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:31:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:31:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:31:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:31:51,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:31:51,735 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-26 06:31:51,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:31:51 BoogieIcfgContainer [2021-08-26 06:31:51,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:31:51,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:31:51,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:31:51,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:31:51,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:31:51" (1/3) ... [2021-08-26 06:31:51,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d580dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:31:51, skipping insertion in model container [2021-08-26 06:31:51,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:31:51" (2/3) ... [2021-08-26 06:31:51,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d580dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:31:51, skipping insertion in model container [2021-08-26 06:31:51,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:31:51" (3/3) ... [2021-08-26 06:31:51,751 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound50.c [2021-08-26 06:31:51,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:31:51,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 06:31:51,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:31:51,796 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 06:31:51,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 06:31:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 06:31:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 06:31:51,834 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:31:51,835 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 06:31:51,835 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:31:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:31:51,846 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-26 06:31:51,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:31:51,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935431820] [2021-08-26 06:31:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:31:51,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:31:51,945 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:31:51,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082805842] [2021-08-26 06:31:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:31:51,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:31:51,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:31:51,949 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) [2021-08-26 06:31:51,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 06:31:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:31:52,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 06:31:52,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:31:52,322 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 06:31:52,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:31:52,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935431820] [2021-08-26 06:31:52,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:31:52,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082805842] [2021-08-26 06:31:52,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082805842] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:31:52,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:31:52,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:31:52,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995402561] [2021-08-26 06:31:52,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:31:52,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:31:52,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:31:52,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:31:52,341 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 1.5) internal successors, (6), 4 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) [2021-08-26 06:31:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:31:52,420 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-08-26 06:31:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:31:52,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-08-26 06:31:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:31:52,427 INFO L225 Difference]: With dead ends: 44 [2021-08-26 06:31:52,428 INFO L226 Difference]: Without dead ends: 19 [2021-08-26 06:31:52,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:31:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-26 06:31:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-08-26 06:31:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 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 06:31:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-08-26 06:31:52,454 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2021-08-26 06:31:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:31:52,454 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-08-26 06:31:52,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-08-26 06:31:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-08-26 06:31:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 06:31:52,455 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:31:52,455 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 06:31:52,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:31:52,665 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 [2021-08-26 06:31:52,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:31:52,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:31:52,666 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-08-26 06:31:52,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:31:52,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571054365] [2021-08-26 06:31:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:31:52,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:31:52,683 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:31:52,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133880376] [2021-08-26 06:31:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:31:52,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:31:52,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:31:52,685 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) [2021-08-26 06:31:52,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 06:31:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:31:52,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 06:31:52,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:31:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:31:53,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:31:53,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571054365] [2021-08-26 06:31:53,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:31:53,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133880376] [2021-08-26 06:31:53,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133880376] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:31:53,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:31:53,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 06:31:53,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726570112] [2021-08-26 06:31:53,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 06:31:53,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:31:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 06:31:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:31:53,184 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 06:31:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:31:53,272 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-08-26 06:31:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:31:53,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2021-08-26 06:31:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:31:53,273 INFO L225 Difference]: With dead ends: 29 [2021-08-26 06:31:53,273 INFO L226 Difference]: Without dead ends: 23 [2021-08-26 06:31:53,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:31:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-26 06:31:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-08-26 06:31:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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 06:31:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-26 06:31:53,278 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-08-26 06:31:53,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:31:53,279 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-26 06:31:53,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 06:31:53,279 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-26 06:31:53,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 06:31:53,279 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:31:53,280 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-08-26 06:31:53,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 06:31:53,484 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 [2021-08-26 06:31:53,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:31:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:31:53,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2021-08-26 06:31:53,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:31:53,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282810295] [2021-08-26 06:31:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:31:53,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:31:53,495 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:31:53,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823513420] [2021-08-26 06:31:53,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:31:53,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:31:53,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:31:53,497 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) [2021-08-26 06:31:53,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 06:31:54,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:31:54,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:31:54,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 06:31:54,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:31:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:31:54,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:31:54,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282810295] [2021-08-26 06:31:54,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:31:54,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823513420] [2021-08-26 06:31:54,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823513420] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:31:54,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:31:54,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 06:31:54,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070811235] [2021-08-26 06:31:54,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 06:31:54,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:31:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 06:31:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 06:31:54,672 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 06:31:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:31:54,861 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-08-26 06:31:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 06:31:54,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 14 [2021-08-26 06:31:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:31:54,862 INFO L225 Difference]: With dead ends: 33 [2021-08-26 06:31:54,862 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 06:31:54,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 91.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:31:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 06:31:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-08-26 06:31:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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 06:31:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-08-26 06:31:54,866 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-08-26 06:31:54,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:31:54,867 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-08-26 06:31:54,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 06:31:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-08-26 06:31:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 06:31:54,867 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:31:54,867 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2021-08-26 06:31:54,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 06:31:55,081 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 [2021-08-26 06:31:55,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:31:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:31:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2021-08-26 06:31:55,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:31:55,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134517438] [2021-08-26 06:31:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:31:55,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:31:55,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:31:55,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333141397] [2021-08-26 06:31:55,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 06:31:55,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:31:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:31:55,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:31:55,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 06:31:56,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 06:31:56,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:31:56,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 06:31:56,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:31:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-26 06:31:58,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:31:58,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134517438] [2021-08-26 06:31:58,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:31:58,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333141397] [2021-08-26 06:31:58,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333141397] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:31:58,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:31:58,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 06:31:58,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478324048] [2021-08-26 06:31:58,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:31:58,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:31:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:31:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-08-26 06:31:58,886 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 06:32:31,977 WARN L207 SmtUtils]: Spent 23.02 s on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2021-08-26 06:32:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:32:36,014 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-08-26 06:32:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:32:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 18 [2021-08-26 06:32:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:32:36,015 INFO L225 Difference]: With dead ends: 26 [2021-08-26 06:32:36,015 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 06:32:36,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29211.9ms TimeCoverageRelationStatistics Valid=29, Invalid=40, Unknown=3, NotChecked=0, Total=72 [2021-08-26 06:32:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 06:32:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 06:32:36,016 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 06:32:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 06:32:36,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-08-26 06:32:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:32:36,016 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 06:32:36,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 06:32:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 06:32:36,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 06:32:36,018 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:32:36,019 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:32:36,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 06:32:36,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:32:36,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 06:32:36,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:32:36,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:32:36,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:32:36,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:32:47,835 WARN L207 SmtUtils]: Spent 11.56 s on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-08-26 06:32:47,837 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 06:32:47,837 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:32:47,838 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:32:47,839 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 37 38) the Hoare annotation is: (and (= (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~az~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~az~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))) [2021-08-26 06:32:47,839 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:32:47,839 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-08-26 06:32:47,839 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-08-26 06:32:47,839 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 06:32:47,840 INFO L853 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse0 (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~az~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)))) (or (and (= (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~az~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= ULTIMATE.start_main_~z~0 0) (and (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (= (mod (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 (- 1))) ULTIMATE.start_main_~z~0) 0))) .cse0) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~y~0 1) .cse0))) [2021-08-26 06:32:47,840 INFO L857 garLoopResultBuilder]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2021-08-26 06:32:47,840 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 06:32:47,840 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 06:32:47,840 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:32:47,841 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:32:47,841 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:32:47,841 INFO L860 garLoopResultBuilder]: At program point L45(lines 22 46) the Hoare annotation is: true [2021-08-26 06:32:47,851 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:32:47,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:32:47 BoogieIcfgContainer [2021-08-26 06:32:47,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:32:47,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:32:47,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:32:47,873 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:32:47,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:31:51" (3/4) ... [2021-08-26 06:32:47,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 06:32:47,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-26 06:32:47,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 06:32:47,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:32:47,886 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:32:47,934 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:32:47,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:32:47,938 INFO L168 Benchmark]: Toolchain (without parser) took 56872.29 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 31.6 MB in the beginning and 32.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:47,938 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:32:47,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.51 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 51.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:47,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.07 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:32:47,939 INFO L168 Benchmark]: Boogie Preprocessor took 29.30 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 48.6 MB in the end (delta: 893.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:32:47,939 INFO L168 Benchmark]: RCFGBuilder took 335.94 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 35.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:47,939 INFO L168 Benchmark]: TraceAbstraction took 56134.06 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.2 MB in the beginning and 35.6 MB in the end (delta: -395.8 kB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:47,940 INFO L168 Benchmark]: Witness Printer took 64.29 ms. Allocated memory is still 81.8 MB. Free memory was 35.6 MB in the beginning and 32.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:47,941 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 36.6 MB in the beginning and 36.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.51 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 51.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.07 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.30 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 48.6 MB in the end (delta: 893.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 335.94 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 35.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 56134.06 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.2 MB in the beginning and 35.6 MB in the end (delta: -395.8 kB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Witness Printer took 64.29 ms. Allocated memory is still 81.8 MB. Free memory was 35.6 MB in the beginning and 32.8 MB in the end (delta: 2.8 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 56055.4ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 14.3ms, AutomataDifference: 37513.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 11616.4ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 55 SDslu, 101 SDs, 0 SdLazy, 102 SolverSat, 34 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10302.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 29435.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 80 HoareAnnotationTreeSize, 4 FomulaSimplifications, 212 FormulaSimplificationTreeSizeReduction, 46.1ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 11564.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 49.0ms SsaConstructionTime, 1781.5ms SatisfiabilityAnalysisTime, 3772.8ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 510 SizeOfPredicates, 32 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 18/34 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 2 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (a * z == az && 1 == cond) && a + z * x == az * y + x - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((a * z == az && 1 == cond) && (z == 0 || (0 == y % z && (x + a * -1) % z == 0))) && a + z * x == az * y + x) || ((a == x && y == 1) && a + z * x == az * y + x) RESULT: Ultimate proved your program to be correct! [2021-08-26 06:32:47,959 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...