./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.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 ac0ddd59582a3509504d1d53a5eb7b96958f7615 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:32:16,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:32:16,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:32:16,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:32:16,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:32:16,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:32:16,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:32:16,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:32:16,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:32:16,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:32:16,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:32:16,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:32:16,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:32:16,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:32:16,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:32:16,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:32:16,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:32:16,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:32:16,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:32:16,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:32:16,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:32:16,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:32:16,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:32:16,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:32:16,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:32:16,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:32:16,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:32:16,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:32:16,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:32:16,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:32:16,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:32:16,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:32:16,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:32:16,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:32:16,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:32:16,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:32:16,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:32:16,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:32:16,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:32:16,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:32:16,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:32:16,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:32:16,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:32:16,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:32:16,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:32:16,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:32:16,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:32:16,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:32:16,602 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:32:16,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:32:16,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:32:16,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:32:16,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:32:16,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:32:16,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:32:16,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:32:16,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:32:16,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:32:16,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:32:16,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:32:16,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:32:16,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:32:16,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:32:16,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:32:16,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:32:16,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:32:16,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:32:16,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:32:16,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:32:16,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:32:16,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:32:16,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:32:16,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac0ddd59582a3509504d1d53a5eb7b96958f7615 [2021-08-26 06:32:16,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:32:16,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:32:16,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:32:16,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:32:16,896 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:32:16,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c [2021-08-26 06:32:16,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8ff001a/fdeed62ea62d4309a54f63359a0e41ce/FLAG5af9bb0de [2021-08-26 06:32:17,312 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:32:17,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c [2021-08-26 06:32:17,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8ff001a/fdeed62ea62d4309a54f63359a0e41ce/FLAG5af9bb0de [2021-08-26 06:32:17,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8ff001a/fdeed62ea62d4309a54f63359a0e41ce [2021-08-26 06:32:17,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:32:17,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:32:17,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:32:17,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:32:17,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:32:17,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356a2573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17, skipping insertion in model container [2021-08-26 06:32:17,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:32:17,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:32:17,469 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c[525,538] [2021-08-26 06:32:17,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:32:17,486 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:32:17,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c[525,538] [2021-08-26 06:32:17,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:32:17,517 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:32:17,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17 WrapperNode [2021-08-26 06:32:17,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:32:17,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:32:17,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:32:17,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:32:17,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:32:17,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:32:17,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:32:17,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:32:17,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:32:17,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:32:17,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:32:17,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:32:17,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (1/1) ... [2021-08-26 06:32:17,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:32:17,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:32:17,638 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 06:32:17,660 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 06:32:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:32:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:32:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:32:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:32:17,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:32:17,874 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-08-26 06:32:17,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:32:17 BoogieIcfgContainer [2021-08-26 06:32:17,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:32:17,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:32:17,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:32:17,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:32:17,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:32:17" (1/3) ... [2021-08-26 06:32:17,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424151c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:32:17, skipping insertion in model container [2021-08-26 06:32:17,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:32:17" (2/3) ... [2021-08-26 06:32:17,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424151c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:32:17, skipping insertion in model container [2021-08-26 06:32:17,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:32:17" (3/3) ... [2021-08-26 06:32:17,897 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound100.c [2021-08-26 06:32:17,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:32:17,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 06:32:17,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:32:17,951 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 06:32:17,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 06:32:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 06:32:17,966 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:32:17,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:32:17,967 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:32:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:32:17,971 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-08-26 06:32:17,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:32:17,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720163559] [2021-08-26 06:32:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:32:17,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:32:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:32:18,104 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 06:32:18,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:32:18,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720163559] [2021-08-26 06:32:18,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720163559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:32:18,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:32:18,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:32:18,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343214288] [2021-08-26 06:32:18,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:32:18,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:32:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:32:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:32:18,128 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:32:18,136 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-08-26 06:32:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:32:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 06:32:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:32:18,142 INFO L225 Difference]: With dead ends: 39 [2021-08-26 06:32:18,142 INFO L226 Difference]: Without dead ends: 17 [2021-08-26 06:32:18,143 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 06:32:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-26 06:32:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-26 06:32:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-26 06:32:18,165 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-08-26 06:32:18,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:32:18,167 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-26 06:32:18,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-26 06:32:18,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 06:32:18,168 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:32:18,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:32:18,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:32:18,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:32:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:32:18,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-08-26 06:32:18,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:32:18,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682390154] [2021-08-26 06:32:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:32:18,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:32:18,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:32:18,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238053363] [2021-08-26 06:32:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:32:18,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:32:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:32:18,204 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 06:32:18,221 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 06:32:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:32:18,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 06:32:18,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:32:18,443 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 06:32:18,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:32:18,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682390154] [2021-08-26 06:32:18,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:32:18,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238053363] [2021-08-26 06:32:18,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238053363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:32:18,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:32:18,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:32:18,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860684539] [2021-08-26 06:32:18,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:32:18,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:32:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:32:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:32:18,446 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:32:18,473 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-08-26 06:32:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:32:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 06:32:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:32:18,474 INFO L225 Difference]: With dead ends: 27 [2021-08-26 06:32:18,474 INFO L226 Difference]: Without dead ends: 21 [2021-08-26 06:32:18,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:32:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-26 06:32:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-08-26 06:32:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-08-26 06:32:18,478 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2021-08-26 06:32:18,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:32:18,478 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-08-26 06:32:18,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,478 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-08-26 06:32:18,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 06:32:18,479 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:32:18,479 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:32:18,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:32:18,691 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 06:32:18,692 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:32:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:32:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash -937492348, now seen corresponding path program 1 times [2021-08-26 06:32:18,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:32:18,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852165113] [2021-08-26 06:32:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:32:18,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:32:18,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:32:18,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915899135] [2021-08-26 06:32:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:32:18,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:32:18,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:32:18,717 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 06:32:18,719 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 06:32:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:32:18,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 06:32:18,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:32:18,902 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 06:32:18,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:32:18,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852165113] [2021-08-26 06:32:18,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:32:18,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915899135] [2021-08-26 06:32:18,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915899135] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:32:18,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:32:18,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 06:32:18,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982876632] [2021-08-26 06:32:18,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:32:18,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:32:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:32:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:32:18,908 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:32:18,966 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-08-26 06:32:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:32:18,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 06:32:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:32:18,968 INFO L225 Difference]: With dead ends: 30 [2021-08-26 06:32:18,968 INFO L226 Difference]: Without dead ends: 24 [2021-08-26 06:32:18,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:32:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-26 06:32:18,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-08-26 06:32:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-08-26 06:32:18,973 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2021-08-26 06:32:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:32:18,973 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-08-26 06:32:18,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-08-26 06:32:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 06:32:18,974 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:32:18,974 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:32:18,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 06:32:19,188 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 06:32:19,189 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:32:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:32:19,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1342734009, now seen corresponding path program 2 times [2021-08-26 06:32:19,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:32:19,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457541002] [2021-08-26 06:32:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:32:19,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:32:19,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:32:19,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144836171] [2021-08-26 06:32:19,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:32:19,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:32:19,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:32:19,202 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 06:32:19,227 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 06:32:19,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:32:19,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:32:19,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-26 06:32:19,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:32:19,743 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 06:32:19,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:32:19,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457541002] [2021-08-26 06:32:19,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:32:19,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144836171] [2021-08-26 06:32:19,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144836171] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:32:19,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:32:19,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 06:32:19,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556774788] [2021-08-26 06:32:19,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 06:32:19,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:32:19,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 06:32:19,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 06:32:19,746 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:32:19,867 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-08-26 06:32:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 06:32:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 06:32:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:32:19,870 INFO L225 Difference]: With dead ends: 33 [2021-08-26 06:32:19,870 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 06:32:19,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:32:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 06:32:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-08-26 06:32:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-08-26 06:32:19,873 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2021-08-26 06:32:19,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:32:19,873 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-08-26 06:32:19,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:32:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-08-26 06:32:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 06:32:19,873 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:32:19,873 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:32:19,892 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 06:32:20,074 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 06:32:20,074 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:32:20,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:32:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1931585436, now seen corresponding path program 3 times [2021-08-26 06:32:20,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:32:20,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989771445] [2021-08-26 06:32:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:32:20,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:32:20,086 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:32:20,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891488814] [2021-08-26 06:32:20,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 06:32:20,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:32:20,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:32:20,095 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 06:32:20,120 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 06:32:20,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 06:32:20,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:32:20,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-26 06:32:20,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:32:34,899 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 28 [2021-08-26 06:32:44,821 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 06:32:44,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:32:44,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989771445] [2021-08-26 06:32:44,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:32:44,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891488814] [2021-08-26 06:32:44,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891488814] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:32:44,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:32:44,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 06:32:44,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915559026] [2021-08-26 06:32:44,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 06:32:44,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:32:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 06:32:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-26 06:32:44,823 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 06:33:08,607 WARN L207 SmtUtils]: Spent 14.10 s on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2021-08-26 06:33:36,691 WARN L207 SmtUtils]: Spent 19.54 s on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-08-26 06:33:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:33:38,703 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-08-26 06:33:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 06:33:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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) Word has length 20 [2021-08-26 06:33:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:33:38,704 INFO L225 Difference]: With dead ends: 26 [2021-08-26 06:33:38,704 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 06:33:38,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 49697.1ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-08-26 06:33:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 06:33:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 06:33:38,705 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 06:33:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 06:33:38,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-08-26 06:33:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:33:38,705 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 06:33:38,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 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 06:33:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 06:33:38,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 06:33:38,707 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:33:38,707 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:33:38,724 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 06:33:38,917 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 06:33:38,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 06:33:38,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:33:38,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:33:38,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:33:38,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:33:47,309 WARN L207 SmtUtils]: Spent 8.34 s on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-08-26 06:33:52,408 WARN L207 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-08-26 06:33:52,410 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 39 40) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse0 (= (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~az~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse0 .cse1 (or (= ULTIMATE.start_main_~y~0 0) (and (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (not (= ULTIMATE.start_main_~z~0 0)))) (or .cse2 (= (mod (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~a~0 (- 1))) ULTIMATE.start_main_~z~0) 0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~az~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))) (and .cse2 .cse0 .cse1 (= ULTIMATE.start_main_~y~0 1)))) [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L860 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 45) the Hoare annotation is: (let ((.cse2 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))) (let ((.cse1 (= .cse2 ULTIMATE.start_main_~az~0)) (.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~y~0 1)) (and .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= (+ .cse2 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~x~0)) (let ((.cse6 (* ULTIMATE.start_main_~a~0 (- 1))) (.cse4 (= ULTIMATE.start_main_~z~0 0))) (let ((.cse3 (not .cse4)) (.cse8 (+ ULTIMATE.start_main_~x~0 .cse6))) (and (or (= ULTIMATE.start_main_~y~0 0) .cse3) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (or .cse4 (let ((.cse5 (div .cse8 ULTIMATE.start_main_~z~0)) (.cse7 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (= (mod (+ .cse5 .cse6) ULTIMATE.start_main_~z~0) 0) (= 0 (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (= (+ ULTIMATE.start_main_~a~0 (* ULTIMATE.start_main_~z~0 .cse5)) (+ .cse5 (* .cse7 ULTIMATE.start_main_~az~0))) (= (mod .cse7 ULTIMATE.start_main_~z~0) 0)))) (or .cse0 (and .cse3 (= (mod .cse8 ULTIMATE.start_main_~z~0) 0))))))))) [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point L36-3(lines 36 45) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 06:33:52,411 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 06:33:52,412 INFO L860 garLoopResultBuilder]: At program point L47(lines 21 48) the Hoare annotation is: true [2021-08-26 06:33:52,415 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:33:52,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:33:52 BoogieIcfgContainer [2021-08-26 06:33:52,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:33:52,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:33:52,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:33:52,425 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:33:52,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:32:17" (3/4) ... [2021-08-26 06:33:52,427 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 06:33:52,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-26 06:33:52,434 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 06:33:52,434 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:33:52,434 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:33:52,455 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:33:52,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:33:52,456 INFO L168 Benchmark]: Toolchain (without parser) took 95124.40 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 27.4 MB in the beginning and 64.1 MB in the end (delta: -36.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-08-26 06:33:52,457 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.3 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:33:52,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.59 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 29.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:33:52,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.59 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 44.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:33:52,458 INFO L168 Benchmark]: Boogie Preprocessor took 34.52 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.6 MB in the end (delta: 909.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:33:52,458 INFO L168 Benchmark]: RCFGBuilder took 264.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 29.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:33:52,458 INFO L168 Benchmark]: TraceAbstraction took 94548.28 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 29.3 MB in the beginning and 66.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-08-26 06:33:52,458 INFO L168 Benchmark]: Witness Printer took 30.80 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 64.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:33:52,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.3 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 184.59 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 29.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.59 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 44.5 MB in the end (delta: -15.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.52 ms. Allocated memory is still 60.8 MB. Free memory was 44.5 MB in the beginning and 43.6 MB in the end (delta: 909.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 264.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 29.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94548.28 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 29.3 MB in the beginning and 66.6 MB in the end (delta: -37.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Witness Printer took 30.80 ms. Allocated memory is still 88.1 MB. Free memory was 66.6 MB in the beginning and 64.1 MB in the end (delta: 2.5 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 94473.9ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 7.5ms, AutomataDifference: 54120.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 13492.6ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 27 SDslu, 113 SDs, 0 SdLazy, 106 SolverSat, 32 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 14249.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 49829.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 189 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 45.1ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 272 FormulaSimplificationTreeSizeReductionInter, 13442.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 50.6ms SsaConstructionTime, 126.0ms SatisfiabilityAnalysisTime, 25447.2ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 30 NumberOfNonLiveVariables, 352 ConjunctsInSsa, 79 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: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a * z == az && 1 == cond) && (y == 0 || (0 == y % z && !(z == 0)))) && (a == x || (x + a * -1) % z == 0)) && a + z * x == az * y + x) || (((a == x && a * z == az) && 1 == cond) && y == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((a == x && a * z == az) && y == 1) || (((a * z == az && 1 == cond) && z == y) && a * z + a == x)) || (((((y == 0 || !(z == 0)) && 1 <= cond) && a * z == az) && (z == 0 || (((((x + a * -1) / z + a * -1) % z == 0 && 0 == y % z) && a + z * ((x + a * -1) / z) == (x + a * -1) / z + y / z * az) && y / z % z == 0))) && (a == x || (!(z == 0) && (x + a * -1) % z == 0))) RESULT: Ultimate proved your program to be correct! [2021-08-26 06:33:52,485 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...