./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 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/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-dev-20ed64e [2021-08-26 06:30:31,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:30:31,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:30:31,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:30:31,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:30:31,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:30:31,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:30:31,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:30:31,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:30:31,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:30:31,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:30:31,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:30:31,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:30:31,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:30:31,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:30:31,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:30:31,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:30:31,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:30:31,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:30:31,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:30:31,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:30:31,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:30:31,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:30:31,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:30:31,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:30:31,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:30:31,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:30:31,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:30:31,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:30:31,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:30:31,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:30:31,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:30:31,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:30:31,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:30:31,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:30:31,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:30:31,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:30:31,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:30:31,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:30:31,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:30:31,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:30:31,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:30:31,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:30:31,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:30:31,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:30:31,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:30:31,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:30:31,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:30:31,887 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:30:31,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:30:31,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:30:31,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:30:31,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:30:31,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:30:31,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:30:31,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:30:31,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:30:31,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:30:31,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:30:31,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:30:31,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:30:31,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:30:31,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:30:31,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:30:31,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:30:31,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:30:31,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:30:31,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:30:31,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:30:31,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:30:31,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:30:31,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:30:31,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb8bbc0186703641a8371882b706e9ce5ba76a0 [2021-08-26 06:30:32,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:30:32,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:30:32,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:30:32,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:30:32,177 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:30:32,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-08-26 06:30:32,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4bdeaa6/9edcd3cc78bf49cba2880a6aed0228b2/FLAG1904fd1d6 [2021-08-26 06:30:32,613 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:30:32,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound10.c [2021-08-26 06:30:32,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4bdeaa6/9edcd3cc78bf49cba2880a6aed0228b2/FLAG1904fd1d6 [2021-08-26 06:30:32,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de4bdeaa6/9edcd3cc78bf49cba2880a6aed0228b2 [2021-08-26 06:30:32,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:30:32,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:30:32,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:30:32,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:30:32,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:30:32,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32707d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32, skipping insertion in model container [2021-08-26 06:30:32,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:30:32,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:30:32,767 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] [2021-08-26 06:30:32,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:30:32,783 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:30:32,793 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] [2021-08-26 06:30:32,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:30:32,841 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:30:32,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32 WrapperNode [2021-08-26 06:30:32,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:30:32,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:30:32,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:30:32,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:30:32,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:30:32,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:30:32,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:30:32,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:30:32,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:30:32,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:30:32,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:30:32,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:30:32,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (1/1) ... [2021-08-26 06:30:32,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:30:32,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:30:32,898 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 06:30:32,910 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 06:30:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:30:32,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:30:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:30:32,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:30:33,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:30:33,177 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-26 06:30:33,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:30:33 BoogieIcfgContainer [2021-08-26 06:30:33,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:30:33,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:30:33,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:30:33,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:30:33,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:30:32" (1/3) ... [2021-08-26 06:30:33,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739d1e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:30:33, skipping insertion in model container [2021-08-26 06:30:33,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:30:32" (2/3) ... [2021-08-26 06:30:33,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739d1e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:30:33, skipping insertion in model container [2021-08-26 06:30:33,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:30:33" (3/3) ... [2021-08-26 06:30:33,183 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound10.c [2021-08-26 06:30:33,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:30:33,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 06:30:33,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:30:33,249 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 06:30:33,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 06:30:33,263 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) [2021-08-26 06:30:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:30:33,271 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:30:33,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:30:33,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:30:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:30:33,277 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-26 06:30:33,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:30:33,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22745491] [2021-08-26 06:30:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:30:33,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:30:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:30:33,414 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 06:30:33,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:30:33,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22745491] [2021-08-26 06:30:33,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22745491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:30:33,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:30:33,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:30:33,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571447781] [2021-08-26 06:30:33,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:30:33,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:30:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:30:33,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:30:33,436 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) [2021-08-26 06:30:33,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:30:33,445 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-08-26 06:30:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:30:33,446 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 [2021-08-26 06:30:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:30:33,452 INFO L225 Difference]: With dead ends: 35 [2021-08-26 06:30:33,452 INFO L226 Difference]: Without dead ends: 15 [2021-08-26 06:30:33,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:30:33,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-26 06:30:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-26 06:30:33,475 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) [2021-08-26 06:30:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-26 06:30:33,476 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-08-26 06:30:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:30:33,477 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-26 06:30:33,477 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) [2021-08-26 06:30:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-26 06:30:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:30:33,479 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:30:33,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:30:33,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:30:33,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:30:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:30:33,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-26 06:30:33,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:30:33,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539947281] [2021-08-26 06:30:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:30:33,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:30:33,511 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:30:33,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033517098] [2021-08-26 06:30:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:30:33,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:30:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:30:33,517 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 06:30:33,541 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 06:30:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:30:33,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 06:30:33,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:30:33,884 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 06:30:33,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:30:33,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539947281] [2021-08-26 06:30:33,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:30:33,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033517098] [2021-08-26 06:30:33,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033517098] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:30:33,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:30:33,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 06:30:33,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383547896] [2021-08-26 06:30:33,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 06:30:33,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:30:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 06:30:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:30:33,887 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) [2021-08-26 06:30:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:30:34,001 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-08-26 06:30:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 06:30:34,002 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 [2021-08-26 06:30:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:30:34,002 INFO L225 Difference]: With dead ends: 25 [2021-08-26 06:30:34,002 INFO L226 Difference]: Without dead ends: 19 [2021-08-26 06:30:34,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:30:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-26 06:30:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-08-26 06:30:34,005 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) [2021-08-26 06:30:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-08-26 06:30:34,006 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-08-26 06:30:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:30:34,006 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-08-26 06:30:34,006 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) [2021-08-26 06:30:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-08-26 06:30:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 06:30:34,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:30:34,007 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:30:34,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 06:30:34,221 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 [2021-08-26 06:30:34,221 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:30:34,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:30:34,221 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-08-26 06:30:34,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:30:34,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583381262] [2021-08-26 06:30:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:30:34,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:30:34,229 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:30:34,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587320149] [2021-08-26 06:30:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:30:34,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:30:34,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:30:34,232 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 06:30:34,238 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 06:30:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:30:34,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 06:30:34,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:30:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:30:34,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:30:34,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583381262] [2021-08-26 06:30:34,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:30:34,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587320149] [2021-08-26 06:30:34,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587320149] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:30:34,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:30:34,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 06:30:34,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455504130] [2021-08-26 06:30:34,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:30:34,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:30:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:30:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:30:34,508 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:30:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:30:34,586 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-08-26 06:30:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:30:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 06:30:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:30:34,587 INFO L225 Difference]: With dead ends: 28 [2021-08-26 06:30:34,587 INFO L226 Difference]: Without dead ends: 22 [2021-08-26 06:30:34,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:30:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-26 06:30:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-08-26 06:30:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 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 06:30:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-08-26 06:30:34,590 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-08-26 06:30:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:30:34,591 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-08-26 06:30:34,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:30:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-08-26 06:30:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 06:30:34,591 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:30:34,591 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:30:34,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-26 06:30:34,792 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 [2021-08-26 06:30:34,792 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:30:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:30:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-08-26 06:30:34,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:30:34,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49680988] [2021-08-26 06:30:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:30:34,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:30:34,805 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:30:34,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137152779] [2021-08-26 06:30:34,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:30:34,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:30:34,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:30:34,806 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 06:30:34,807 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 06:30:34,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:30:34,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:30:34,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-26 06:30:34,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:30:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:30:35,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:30:35,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49680988] [2021-08-26 06:30:35,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:30:35,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137152779] [2021-08-26 06:30:35,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137152779] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:30:35,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:30:35,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 06:30:35,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763869500] [2021-08-26 06:30:35,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:30:35,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:30:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:30:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:30:35,175 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-08-26 06:30:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:30:35,304 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-08-26 06:30:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 06:30:35,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) Word has length 15 [2021-08-26 06:30:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:30:35,305 INFO L225 Difference]: With dead ends: 31 [2021-08-26 06:30:35,305 INFO L226 Difference]: Without dead ends: 25 [2021-08-26 06:30:35,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-26 06:30:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-26 06:30:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-08-26 06:30:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 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 06:30:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-08-26 06:30:35,309 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2021-08-26 06:30:35,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:30:35,309 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-08-26 06:30:35,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-08-26 06:30:35,310 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-08-26 06:30:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 06:30:35,310 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:30:35,310 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:30:35,332 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 06:30:35,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:30:35,528 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:30:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:30:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-08-26 06:30:35,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:30:35,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542199947] [2021-08-26 06:30:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:30:35,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:30:35,541 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:30:35,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554228864] [2021-08-26 06:30:35,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 06:30:35,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:30:35,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:30:35,546 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 06:30:35,557 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 06:30:35,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 06:30:35,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:30:35,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 06:30:35,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:30:48,413 WARN L207 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 27 [2021-08-26 06:31:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 06:31:14,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:31:14,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542199947] [2021-08-26 06:31:14,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:31:14,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554228864] [2021-08-26 06:31:14,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554228864] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:31:14,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:31:14,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 06:31:14,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239727584] [2021-08-26 06:31:14,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 06:31:14,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:31:14,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 06:31:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2021-08-26 06:31:14,372 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 06:31:35,056 WARN L207 SmtUtils]: Spent 14.31 s on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2021-08-26 06:31:51,350 WARN L207 SmtUtils]: Spent 7.21 s on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-08-26 06:31:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:31:55,436 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-08-26 06:31:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 06:31:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 06:31:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:31:55,437 INFO L225 Difference]: With dead ends: 24 [2021-08-26 06:31:55,437 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 06:31:55,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 41481.6ms TimeCoverageRelationStatistics Valid=56, Invalid=125, Unknown=1, NotChecked=0, Total=182 [2021-08-26 06:31:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 06:31:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 06:31:55,438 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 06:31:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 06:31:55,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-08-26 06:31:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:31:55,438 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 06:31:55,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 06:31:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 06:31:55,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 06:31:55,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:55,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:31:55,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-26 06:31:55,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:31:55,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 06:31:55,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:31:55,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:31:55,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:31:55,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:32:01,493 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-08-26 06:32:10,395 WARN L207 SmtUtils]: Spent 8.90 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-08-26 06:32:10,397 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~x~0 1)) (.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (<= ULTIMATE.start_main_~z~0 10))) (or (let ((.cse4 (= ULTIMATE.start_main_~z~0 0))) (let ((.cse3 (not .cse4))) (and .cse0 .cse1 (or .cse2 .cse3) (or (= ULTIMATE.start_main_~y~0 0) (and (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse3)) (or .cse4 (let ((.cse7 (+ (- 1) ULTIMATE.start_main_~x~0))) (let ((.cse5 (div .cse7 ULTIMATE.start_main_~z~0)) (.cse6 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (= (mod (+ (- 1) .cse5) ULTIMATE.start_main_~z~0) 0) (= (+ (* .cse5 ULTIMATE.start_main_~z~0) 1) (+ .cse5 (* .cse6 ULTIMATE.start_main_~z~0))) (= (mod .cse7 ULTIMATE.start_main_~z~0) 0) (= (mod .cse6 ULTIMATE.start_main_~z~0) 0)))))))) (and .cse0 .cse1 (= ULTIMATE.start_main_~y~0 1) .cse2) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)))) [2021-08-26 06:32:10,397 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2021-08-26 06:32:10,397 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:32:10,397 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:32:10,398 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 38 39) the Hoare annotation is: (let ((.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~z~0)) (.cse2 (<= ULTIMATE.start_main_~z~0 10))) (or (let ((.cse5 (+ (- 1) ULTIMATE.start_main_~x~0))) (let ((.cse0 (div .cse5 ULTIMATE.start_main_~z~0)) (.cse4 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (= (mod (+ (- 1) .cse0) ULTIMATE.start_main_~z~0) 0) .cse1 .cse2 (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse3 (= (+ (* .cse0 ULTIMATE.start_main_~z~0) 1) (+ .cse0 (* .cse4 ULTIMATE.start_main_~z~0))) (not (= ULTIMATE.start_main_~z~0 0)) (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= (mod .cse4 ULTIMATE.start_main_~z~0) 0)))) (and .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1)) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 1)))) [2021-08-26 06:32:10,398 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:32:10,398 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-26 06:32:10,398 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-08-26 06:32:10,398 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-08-26 06:32:10,398 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 06:32:10,398 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 06:32:10,398 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 06:32:10,399 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:32:10,399 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:32:10,399 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:32:10,399 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 06:32:10,399 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-08-26 06:32:10,399 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 06:32:10,399 INFO L860 garLoopResultBuilder]: At program point L46(lines 23 47) the Hoare annotation is: true [2021-08-26 06:32:10,402 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:32:10,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:32:10 BoogieIcfgContainer [2021-08-26 06:32:10,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:32:10,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:32:10,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:32:10,414 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:32:10,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:30:33" (3/4) ... [2021-08-26 06:32:10,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 06:32:10,422 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-08-26 06:32:10,422 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 06:32:10,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:32:10,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:32:10,453 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:32:10,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:32:10,454 INFO L168 Benchmark]: Toolchain (without parser) took 97811.10 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 47.0 MB in the beginning and 40.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:10,455 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 67.1 MB. Free memory was 48.4 MB in the beginning and 48.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:32:10,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.38 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 50.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:10,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 48.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:32:10,456 INFO L168 Benchmark]: Boogie Preprocessor took 12.79 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 47.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:32:10,456 INFO L168 Benchmark]: RCFGBuilder took 299.49 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 35.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:10,456 INFO L168 Benchmark]: TraceAbstraction took 97234.22 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 34.5 MB in the beginning and 43.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:10,457 INFO L168 Benchmark]: Witness Printer took 39.17 ms. Allocated memory is still 98.6 MB. Free memory was 43.6 MB in the beginning and 40.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:32:10,458 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 67.1 MB. Free memory was 48.4 MB in the beginning and 48.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 199.38 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 50.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 67.1 MB. Free memory was 50.2 MB in the beginning and 48.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.79 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 47.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 299.49 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 35.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97234.22 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 34.5 MB in the beginning and 43.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * Witness Printer took 39.17 ms. Allocated memory is still 98.6 MB. Free memory was 43.6 MB in the beginning and 40.5 MB in the end (delta: 3.1 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 97165.1ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 13.9ms, AutomataDifference: 41425.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 14755.6ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 57 SDtfs, 37 SDslu, 118 SDs, 0 SdLazy, 153 SolverSat, 29 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14662.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 41729.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 214 HoareAnnotationTreeSize, 4 FomulaSimplifications, 142 FormulaSimplificationTreeSizeReduction, 42.0ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 14708.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 56.2ms SsaConstructionTime, 300.7ms SatisfiabilityAnalysisTime, 39328.1ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 25 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 11/24 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) && (x == 1 || !(z == 0))) && (y == 0 || (0 == y % z && !(z == 0)))) && (z == 0 || ((((-1 + (-1 + x) / z) % z == 0 && (-1 + x) / z * z + 1 == (-1 + x) / z + y / z * z) && (-1 + x) % z == 0) && y / z % z == 0))) || (((0 <= z && z <= 10) && y == 1) && x == 1)) || ((((1 <= cond && 0 <= z) && z <= 10) && x == z + 1) && z == y) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((((-1 + (-1 + x) / z) % z == 0 && 0 <= z) && z <= 10) && 0 == y % z) && 1 == cond) && (-1 + x) / z * z + 1 == (-1 + x) / z + y / z * z) && !(z == 0)) && (-1 + x) % z == 0) && y / z % z == 0) || ((((0 <= z && z <= 10) && 1 == cond) && x == z + 1) && z == y)) || ((((1 <= cond && 0 <= z) && z <= 10) && y == 1) && x == 1) RESULT: Ultimate proved your program to be correct! [2021-08-26 06:32:10,487 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...