./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/geo2-ll_valuebound10.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 1bb8bbc0186703641a8371882b706e9ce5ba76a0 ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:15:49,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:15:49,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:15:49,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:15:49,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:15:49,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:15:49,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:15:49,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:15:49,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:15:49,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:15:49,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:15:49,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:15:49,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:15:49,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:15:49,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:15:49,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:15:49,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:15:49,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:15:49,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:15:49,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:15:49,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:15:49,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:15:49,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:15:49,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:15:49,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:15:49,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:15:49,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:15:49,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:15:49,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:15:49,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:15:49,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:15:49,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:15:49,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:15:49,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:15:49,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:15:49,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:15:49,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:15:49,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:15:49,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:15:49,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:15:49,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:15:49,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:15:49,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:15:49,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:15:49,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:15:49,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:15:49,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:15:49,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:15:49,894 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:15:49,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:15:49,895 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:15:49,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:15:49,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:15:49,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:15:49,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:15:49,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:15:49,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:15:49,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:15:49,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:15:49,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:15:49,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:15:49,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:15:49,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:15:49,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:15:49,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:15:49,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:15:49,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:15:49,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:15:49,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:15:49,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:15:49,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:15:49,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:15:49,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb8bbc0186703641a8371882b706e9ce5ba76a0 [2021-08-29 13:15:50,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:15:50,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:15:50,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:15:50,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:15:50,284 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:15:50,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-08-29 13:15:50,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fac8b131/a0a56cfb39fc416b879dd04f43518a51/FLAGb0f695943 [2021-08-29 13:15:50,775 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:15:50,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-08-29 13:15:50,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fac8b131/a0a56cfb39fc416b879dd04f43518a51/FLAGb0f695943 [2021-08-29 13:15:50,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fac8b131/a0a56cfb39fc416b879dd04f43518a51 [2021-08-29 13:15:50,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:15:50,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:15:50,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:15:50,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:15:50,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:15:50,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:15:50" (1/1) ... [2021-08-29 13:15:50,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe0ede1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:50, skipping insertion in model container [2021-08-29 13:15:50,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:15:50" (1/1) ... [2021-08-29 13:15:50,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:15:50,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:15:50,950 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/geo2-ll_valuebound10.c[525,538] [2021-08-29 13:15:50,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:15:50,976 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:15:50,988 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/geo2-ll_valuebound10.c[525,538] [2021-08-29 13:15:50,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:15:51,015 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:15:51,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51 WrapperNode [2021-08-29 13:15:51,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:15:51,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:15:51,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:15:51,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:15:51,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:15:51,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:15:51,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:15:51,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:15:51,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:15:51,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:15:51,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:15:51,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:15:51,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (1/1) ... [2021-08-29 13:15:51,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:15:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:15:51,150 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) [2021-08-29 13:15:51,183 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 [2021-08-29 13:15:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:15:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:15:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:15:51,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:15:51,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:15:51,363 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-29 13:15:51,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:15:51 BoogieIcfgContainer [2021-08-29 13:15:51,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:15:51,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:15:51,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:15:51,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:15:51,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:15:50" (1/3) ... [2021-08-29 13:15:51,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bc4998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:15:51, skipping insertion in model container [2021-08-29 13:15:51,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:15:51" (2/3) ... [2021-08-29 13:15:51,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bc4998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:15:51, skipping insertion in model container [2021-08-29 13:15:51,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:15:51" (3/3) ... [2021-08-29 13:15:51,373 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound10.c [2021-08-29 13:15:51,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:15:51,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 13:15:51,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:15:51,476 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 [2021-08-29 13:15:51,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 13:15:51,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 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) [2021-08-29 13:15:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 13:15:51,495 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:15:51,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:15:51,497 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:15:51,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:15:51,503 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-29 13:15:51,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:15:51,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846030554] [2021-08-29 13:15:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:51,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:15:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:15:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:15:51,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:15:51,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846030554] [2021-08-29 13:15:51,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846030554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:15:51,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:15:51,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:15:51,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132624056] [2021-08-29 13:15:51,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:15:51,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:15:51,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:15:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:15:51,737 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-29 13:15:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:15:51,824 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-08-29 13:15:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:15:51,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-08-29 13:15:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:15:51,832 INFO L225 Difference]: With dead ends: 35 [2021-08-29 13:15:51,833 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 13:15:51,835 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:15:51,838 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.66ms IncrementalHoareTripleChecker+Time [2021-08-29 13:15:51,839 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 71.66ms Time] [2021-08-29 13:15:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 13:15:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-29 13:15:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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) [2021-08-29 13:15:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-29 13:15:51,864 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-08-29 13:15:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:15:51,865 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-29 13:15:51,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-29 13:15:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-29 13:15:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 13:15:51,866 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:15:51,866 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:15:51,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:15:51,866 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:15:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:15:51,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-29 13:15:51,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:15:51,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366048208] [2021-08-29 13:15:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:51,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:15:51,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:15:51,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247712940] [2021-08-29 13:15:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:51,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:15:51,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:15:51,882 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) [2021-08-29 13:15:51,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 13:15:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:15:51,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 13:15:51,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:15:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:15:52,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:15:52,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:15:52,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366048208] [2021-08-29 13:15:52,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:15:52,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247712940] [2021-08-29 13:15:52,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247712940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:15:52,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:15:52,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 13:15:52,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892702622] [2021-08-29 13:15:52,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 13:15:52,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:15:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 13:15:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:15:52,196 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-08-29 13:15:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:15:52,347 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-08-29 13:15:52,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 13:15:52,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2021-08-29 13:15:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:15:52,349 INFO L225 Difference]: With dead ends: 25 [2021-08-29 13:15:52,350 INFO L226 Difference]: Without dead ends: 19 [2021-08-29 13:15:52,351 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.95ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-29 13:15:52,352 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.86ms IncrementalHoareTripleChecker+Time [2021-08-29 13:15:52,353 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 67 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 69.86ms Time] [2021-08-29 13:15:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-29 13:15:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-08-29 13:15:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-08-29 13:15:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-08-29 13:15:52,360 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-08-29 13:15:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:15:52,361 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-08-29 13:15:52,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-08-29 13:15:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-08-29 13:15:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 13:15:52,365 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:15:52,366 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:15:52,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:15:52,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:15:52,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 13:15:52,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:15:52,578 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-08-29 13:15:52,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:15:52,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272522662] [2021-08-29 13:15:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:52,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:15:52,597 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:15:52,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745238355] [2021-08-29 13:15:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:15:52,601 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:15:52,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:15:52,603 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) [2021-08-29 13:15:52,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 13:15:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:15:52,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 13:15:52,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:15:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:15:52,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:15:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:15:52,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:15:52,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272522662] [2021-08-29 13:15:52,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:15:52,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745238355] [2021-08-29 13:15:52,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745238355] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:15:52,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:15:52,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 13:15:52,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091685566] [2021-08-29 13:15:52,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 13:15:52,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:15:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 13:15:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:15:52,974 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2021-08-29 13:15:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:15:53,073 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-08-29 13:15:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 13:15:53,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 12 [2021-08-29 13:15:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:15:53,074 INFO L225 Difference]: With dead ends: 23 [2021-08-29 13:15:53,074 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 13:15:53,075 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 149.27ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-29 13:15:53,076 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.03ms IncrementalHoareTripleChecker+Time [2021-08-29 13:15:53,076 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [19 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 65.03ms Time] [2021-08-29 13:15:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 13:15:53,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 13:15:53,077 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) [2021-08-29 13:15:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 13:15:53,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-08-29 13:15:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:15:53,078 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 13:15:53,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2021-08-29 13:15:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 13:15:53,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 13:15:53,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 13:15:53,081 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 13:15:53,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 13:15:53,281 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,SelfDestructingSolverStorable2 [2021-08-29 13:15:53,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 13:15:53,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:15:53,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:15:53,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:15:53,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:15:53,394 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (<= ULTIMATE.start_main_~z~0 10))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 1)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)) .cse0 .cse1))) [2021-08-29 13:15:53,395 INFO L858 garLoopResultBuilder]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2021-08-29 13:15:53,395 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:15:53,396 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:15:53,396 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 38 39) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)) (<= 0 ULTIMATE.start_main_~z~0) (<= ULTIMATE.start_main_~z~0 10)) [2021-08-29 13:15:53,396 INFO L858 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:15:53,396 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-29 13:15:53,397 INFO L858 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-08-29 13:15:53,399 INFO L861 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-08-29 13:15:53,399 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 13:15:53,399 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 13:15:53,400 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 13:15:53,402 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:15:53,403 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:15:53,403 INFO L858 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:15:53,403 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-29 13:15:53,404 INFO L858 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-08-29 13:15:53,404 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 13:15:53,404 INFO L861 garLoopResultBuilder]: At program point L46(lines 23 47) the Hoare annotation is: true [2021-08-29 13:15:53,409 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:15:53,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:15:53 BoogieIcfgContainer [2021-08-29 13:15:53,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:15:53,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:15:53,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:15:53,431 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:15:53,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:15:51" (3/4) ... [2021-08-29 13:15:53,434 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 13:15:53,444 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-29 13:15:53,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 13:15:53,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 13:15:53,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 13:15:53,480 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:15:53,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:15:53,481 INFO L158 Benchmark]: Toolchain (without parser) took 2675.42ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 36.0MB in the beginning and 30.6MB in the end (delta: 5.4MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-08-29 13:15:53,481 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:53,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.08ms. Allocated memory is still 56.6MB. Free memory was 35.8MB in the beginning and 26.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 13:15:53,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.53ms. Allocated memory is still 56.6MB. Free memory was 26.2MB in the beginning and 40.1MB in the end (delta: -13.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 13:15:53,483 INFO L158 Benchmark]: Boogie Preprocessor took 29.18ms. Allocated memory is still 56.6MB. Free memory was 40.1MB in the beginning and 39.1MB in the end (delta: 989.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:15:53,483 INFO L158 Benchmark]: RCFGBuilder took 252.49ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 30.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 13:15:53,484 INFO L158 Benchmark]: TraceAbstraction took 2059.21ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 30.0MB in the beginning and 33.2MB in the end (delta: -3.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-08-29 13:15:53,485 INFO L158 Benchmark]: Witness Printer took 49.58ms. Allocated memory is still 73.4MB. Free memory was 33.2MB in the beginning and 30.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 13:15:53,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.08ms. Allocated memory is still 56.6MB. Free memory was 35.8MB in the beginning and 26.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.53ms. Allocated memory is still 56.6MB. Free memory was 26.2MB in the beginning and 40.1MB in the end (delta: -13.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.18ms. Allocated memory is still 56.6MB. Free memory was 40.1MB in the beginning and 39.1MB in the end (delta: 989.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.49ms. Allocated memory is still 56.6MB. Free memory was 39.0MB in the beginning and 30.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2059.21ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 30.0MB in the beginning and 33.2MB in the end (delta: -3.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Witness Printer took 49.58ms. Allocated memory is still 73.4MB. Free memory was 33.2MB in the beginning and 30.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1953.97ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 11.92ms, AutomataDifference: 392.61ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 112.06ms, InitialAbstractionConstructionTime: 10.36ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 206.56ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 170.20ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 0 mSDtfsCounter, 123 mSolverCounterSat, 4.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 258.26ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 19.36ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 58 HoareAnnotationTreeSize, 4 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 29.94ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 76.55ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 43.58ms SsaConstructionTime, 83.45ms SatisfiabilityAnalysisTime, 614.24ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((0 <= z && z <= 10) && y == 1) && x == 1) || (((1 <= cond && x + z * y == z * x + 1) && 0 <= z) && z <= 10) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((1 <= cond && x + z * y == z * x + 1) && 0 <= z) && z <= 10 RESULT: Ultimate proved your program to be correct! [2021-08-29 13:15:53,515 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...