./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d50c732daf4010be138a5b2a7e8fc6e324d115c0 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:50:25,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:50:25,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:50:25,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:50:25,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:50:25,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:50:25,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:50:25,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:50:25,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:50:25,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:50:25,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:50:25,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:50:25,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:50:25,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:50:25,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:50:25,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:50:25,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:50:25,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:50:25,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:50:25,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:50:25,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:50:25,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:50:25,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:50:25,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:50:25,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:50:25,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:50:25,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:50:25,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:50:25,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:50:25,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:50:25,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:50:25,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:50:25,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:50:25,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:50:25,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:50:25,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:50:25,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:50:25,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:50:25,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:50:25,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:50:25,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:50:25,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:50:25,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:50:25,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:50:25,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:50:25,645 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:50:25,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:50:25,645 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:50:25,645 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:50:25,645 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:50:25,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:50:25,646 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:50:25,646 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:50:25,646 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:50:25,646 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:50:25,647 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:50:25,647 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:50:25,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:50:25,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:50:25,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:50:25,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:50:25,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:50:25,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:50:25,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:50:25,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:50:25,649 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:50:25,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:50:25,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:50:25,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:50:25,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:50:25,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:50:25,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:50:25,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:50:25,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:50:25,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:50:25,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:50:25,651 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:50:25,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:50:25,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:50:25,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:50:25,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:50:25,651 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d50c732daf4010be138a5b2a7e8fc6e324d115c0 [2020-12-09 09:50:25,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:50:25,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:50:25,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:50:25,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:50:25,851 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:50:25,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2020-12-09 09:50:25,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/data/372e48062/5a6cd46da74c4752819f19469331e05d/FLAG6fbccdc85 [2020-12-09 09:50:26,252 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:50:26,252 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2020-12-09 09:50:26,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/data/372e48062/5a6cd46da74c4752819f19469331e05d/FLAG6fbccdc85 [2020-12-09 09:50:26,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/data/372e48062/5a6cd46da74c4752819f19469331e05d [2020-12-09 09:50:26,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:50:26,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:50:26,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:50:26,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:50:26,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:50:26,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195f23dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26, skipping insertion in model container [2020-12-09 09:50:26,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:50:26,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:50:26,404 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c[525,538] [2020-12-09 09:50:26,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:50:26,438 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:50:26,449 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c[525,538] [2020-12-09 09:50:26,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:50:26,472 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:50:26,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26 WrapperNode [2020-12-09 09:50:26,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:50:26,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:50:26,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:50:26,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:50:26,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:50:26,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:50:26,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:50:26,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:50:26,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... [2020-12-09 09:50:26,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:50:26,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:50:26,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:50:26,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:50:26,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:50:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:50:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:50:26,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:50:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:50:26,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:50:26,857 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-09 09:50:26,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:50:26 BoogieIcfgContainer [2020-12-09 09:50:26,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:50:26,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:50:26,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:50:26,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:50:26,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:50:26" (1/3) ... [2020-12-09 09:50:26,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56907c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:50:26, skipping insertion in model container [2020-12-09 09:50:26,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:50:26" (2/3) ... [2020-12-09 09:50:26,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56907c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:50:26, skipping insertion in model container [2020-12-09 09:50:26,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:50:26" (3/3) ... [2020-12-09 09:50:26,864 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound1.c [2020-12-09 09:50:26,873 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:50:26,876 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-09 09:50:26,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-09 09:50:26,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:50:26,901 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:50:26,901 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:50:26,901 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:50:26,901 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:50:26,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:50:26,901 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:50:26,901 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:50:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-09 09:50:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 09:50:26,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:50:26,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 09:50:26,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:50:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:50:26,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1143465249, now seen corresponding path program 1 times [2020-12-09 09:50:26,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:50:26,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354729089] [2020-12-09 09:50:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:50:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:50:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:50:27,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354729089] [2020-12-09 09:50:27,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:50:27,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:50:27,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64920139] [2020-12-09 09:50:27,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 09:50:27,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:50:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 09:50:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 09:50:27,032 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-09 09:50:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:50:27,045 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2020-12-09 09:50:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 09:50:27,046 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 09:50:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:50:27,051 INFO L225 Difference]: With dead ends: 84 [2020-12-09 09:50:27,052 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 09:50:27,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 09:50:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 09:50:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-09 09:50:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 09:50:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-12-09 09:50:27,084 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 6 [2020-12-09 09:50:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:50:27,084 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-12-09 09:50:27,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 09:50:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-12-09 09:50:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 09:50:27,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:50:27,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:50:27,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:50:27,085 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:50:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:50:27,086 INFO L82 PathProgramCache]: Analyzing trace with hash 651938503, now seen corresponding path program 1 times [2020-12-09 09:50:27,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:50:27,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345808266] [2020-12-09 09:50:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:50:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:50:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:50:27,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345808266] [2020-12-09 09:50:27,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:50:27,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:50:27,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123830247] [2020-12-09 09:50:27,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:50:27,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:50:27,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:50:27,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:50:27,136 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 4 states. [2020-12-09 09:50:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:50:27,154 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-12-09 09:50:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:50:27,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 09:50:27,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:50:27,155 INFO L225 Difference]: With dead ends: 82 [2020-12-09 09:50:27,155 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 09:50:27,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:50:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 09:50:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-12-09 09:50:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-09 09:50:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-12-09 09:50:27,161 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 7 [2020-12-09 09:50:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:50:27,161 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-12-09 09:50:27,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:50:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-12-09 09:50:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:50:27,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:50:27,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:50:27,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:50:27,162 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:50:27,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:50:27,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1215948133, now seen corresponding path program 1 times [2020-12-09 09:50:27,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:50:27,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497929958] [2020-12-09 09:50:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:50:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:50:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:50:27,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497929958] [2020-12-09 09:50:27,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:50:27,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:50:27,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642422527] [2020-12-09 09:50:27,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:50:27,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:50:27,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:50:27,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:50:27,218 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 6 states. [2020-12-09 09:50:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:50:27,247 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-09 09:50:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:50:27,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 09:50:27,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:50:27,248 INFO L225 Difference]: With dead ends: 58 [2020-12-09 09:50:27,248 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 09:50:27,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:50:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 09:50:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 09:50:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 09:50:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-09 09:50:27,251 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 8 [2020-12-09 09:50:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:50:27,252 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-09 09:50:27,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:50:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-09 09:50:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:50:27,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:50:27,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:50:27,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 09:50:27,252 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:50:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:50:27,253 INFO L82 PathProgramCache]: Analyzing trace with hash 960330495, now seen corresponding path program 1 times [2020-12-09 09:50:27,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:50:27,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841965946] [2020-12-09 09:50:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:50:27,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:50:27,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360660347] [2020-12-09 09:50:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:50:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:50:27,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 09:50:27,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:50:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:50:27,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:50:29,509 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~r~0 Int)) (= (mod (let ((.cse0 (* c_ULTIMATE.start_main_~h~0 12))) (+ (* (* .cse0 c_ULTIMATE.start_main_~n~0) 4294967295) (* (* (* c_ULTIMATE.start_main_~p~0 16) ULTIMATE.start_main_~r~0) 4294967295) (* c_ULTIMATE.start_main_~p~0 4294967292) (* .cse0 ULTIMATE.start_main_~r~0) (* (* c_ULTIMATE.start_main_~n~0 16) c_ULTIMATE.start_main_~p~0) (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~h~0) c_ULTIMATE.start_main_~h~0) (* c_ULTIMATE.start_main_~h~0 4294967295))) 4294967296) 0)) is different from true [2020-12-09 09:50:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:50:29,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841965946] [2020-12-09 09:50:29,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:50:29,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360660347] [2020-12-09 09:50:29,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:50:29,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 09:50:29,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882738271] [2020-12-09 09:50:29,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:50:29,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:50:29,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:50:29,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2020-12-09 09:50:29,580 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-12-09 09:50:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:50:29,662 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-09 09:50:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:50:29,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-09 09:50:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:50:29,663 INFO L225 Difference]: With dead ends: 20 [2020-12-09 09:50:29,663 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 09:50:29,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=20, Invalid=25, Unknown=1, NotChecked=10, Total=56 [2020-12-09 09:50:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 09:50:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 09:50:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 09:50:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-12-09 09:50:29,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2020-12-09 09:50:29,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:50:29,667 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-12-09 09:50:29,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:50:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-12-09 09:50:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:50:29,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:50:29,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:50:29,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:50:29,871 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:50:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:50:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -540204062, now seen corresponding path program 1 times [2020-12-09 09:50:29,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:50:29,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064340689] [2020-12-09 09:50:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:50:29,910 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:50:29,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644841889] [2020-12-09 09:50:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:50:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:50:29,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 09:50:29,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:50:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:50:29,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:50:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:50:32,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064340689] [2020-12-09 09:50:32,049 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:50:32,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644841889] [2020-12-09 09:50:32,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:50:32,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 09:50:32,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11840143] [2020-12-09 09:50:32,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:50:32,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:50:32,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:50:32,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2020-12-09 09:50:32,051 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 6 states. [2020-12-09 09:50:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:50:32,513 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-12-09 09:50:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:50:32,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 09:50:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:50:32,514 INFO L225 Difference]: With dead ends: 14 [2020-12-09 09:50:32,514 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:50:32,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=23, Invalid=32, Unknown=1, NotChecked=0, Total=56 [2020-12-09 09:50:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:50:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:50:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:50:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:50:32,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 09:50:32,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:50:32,515 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:50:32,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:50:32,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:50:32,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:50:32,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:50:32,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:50:32,805 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,805 INFO L262 CegarLoopResult]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2020-12-09 09:50:32,805 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,805 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:50:32,805 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,806 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: false [2020-12-09 09:50:32,806 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,806 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: false [2020-12-09 09:50:32,806 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,806 INFO L258 CegarLoopResult]: At program point L12-8(lines 11 17) the Hoare annotation is: false [2020-12-09 09:50:32,806 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,806 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: false [2020-12-09 09:50:32,806 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,806 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: false [2020-12-09 09:50:32,806 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,806 INFO L258 CegarLoopResult]: At program point L12-17(lines 46 47) the Hoare annotation is: false [2020-12-09 09:50:32,806 INFO L262 CegarLoopResult]: For program point L12-18(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L258 CegarLoopResult]: At program point L12-20(lines 11 17) the Hoare annotation is: (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~h~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< (mod ULTIMATE.start_main_~n~0 4294967296) 1073741823) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~p~0 0)) [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L12-21(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L258 CegarLoopResult]: At program point L12-23(lines 11 17) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ~counter~0) (= ULTIMATE.start_main_~h~0 0) (< (mod ULTIMATE.start_main_~n~0 4294967296) 1073741823) (= ULTIMATE.start_main_~p~0 0)) [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L12-24(lines 12 15) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L265 CegarLoopResult]: At program point L12-26(lines 11 17) the Hoare annotation is: true [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,807 INFO L262 CegarLoopResult]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point L38(lines 38 56) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~h~0 0)) (.cse1 (< (mod ULTIMATE.start_main_~n~0 4294967296) 1073741823)) (.cse2 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~p~0 0))) (or (and (<= 1 ~counter~0) .cse0 .cse1 .cse2 .cse3) (and (= ~counter~0 0) .cse0 .cse1 .cse2 .cse3))) [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,808 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:50:32,809 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,809 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 09:50:32,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:50:32 BoogieIcfgContainer [2020-12-09 09:50:32,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:50:32,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:50:32,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:50:32,821 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:50:32,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:50:26" (3/4) ... [2020-12-09 09:50:32,823 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:50:32,829 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 09:50:32,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 09:50:32,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 09:50:32,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:50:32,863 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_66a8d0cb-cd89-4b30-a54b-6ddb0404cf29/bin/utaipan/witness.graphml [2020-12-09 09:50:32,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:50:32,865 INFO L168 Benchmark]: Toolchain (without parser) took 6594.55 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 58.2 MB in the beginning and 46.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:50:32,865 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 74.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:50:32,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.06 ms. Allocated memory is still 98.6 MB. Free memory was 57.9 MB in the beginning and 73.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:50:32,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.95 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:50:32,871 INFO L168 Benchmark]: Boogie Preprocessor took 17.22 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 70.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:50:32,872 INFO L168 Benchmark]: RCFGBuilder took 339.55 ms. Allocated memory is still 98.6 MB. Free memory was 70.1 MB in the beginning and 58.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:50:32,872 INFO L168 Benchmark]: TraceAbstraction took 5960.06 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 58.1 MB in the beginning and 49.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:50:32,873 INFO L168 Benchmark]: Witness Printer took 43.33 ms. Allocated memory is still 121.6 MB. Free memory was 49.3 MB in the beginning and 46.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:50:32,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 74.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 202.06 ms. Allocated memory is still 98.6 MB. Free memory was 57.9 MB in the beginning and 73.2 MB in the end (delta: -15.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.95 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.22 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 70.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 339.55 ms. Allocated memory is still 98.6 MB. Free memory was 70.1 MB in the beginning and 58.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5960.06 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 58.1 MB in the beginning and 49.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. * Witness Printer took 43.33 ms. Allocated memory is still 121.6 MB. Free memory was 49.3 MB in the beginning and 46.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && 1 <= counter) && h == 0) && n % 4294967296 < 1073741823) && p == 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((1 <= counter && h == 0) && n % 4294967296 < 1073741823) && n == r) && p == 0) || ((((counter == 0 && h == 0) && n % 4294967296 < 1073741823) && n == r) && p == 0) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((1 <= counter && h == 0) && 1 == cond) && n % 4294967296 < 1073741823) && n == r) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 25 SDslu, 142 SDs, 0 SdLazy, 53 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 84 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 6 QuantifiedInterpolants, 4872 SizeOfPredicates, 14 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...