./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 1cf6e6673b438699da9ee704d05513145f047cb3df96501a17b1bf1cde58831e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:54:52,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:54:52,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:54:52,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:54:52,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:54:52,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:54:52,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:54:52,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:54:52,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:54:52,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:54:52,639 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:54:52,639 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:54:52,642 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:54:52,642 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:54:52,643 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:54:52,644 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:54:52,647 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:54:52,648 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:54:52,648 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:54:52,649 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:54:52,652 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:54:52,655 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:54:52,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:54:52,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:54:52,656 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:54:52,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:54:52,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:54:52,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:54:52,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:54:52,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:54:52,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:54:52,660 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:54:52,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:54:52,661 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:54:52,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:54:52,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:54:52,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:54:52,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:52,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:54:52,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:54:52,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:54:52,663 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:54:52,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:54:52,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:54:52,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:54:52,664 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:54:52,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:54:52,665 INFO L153 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_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cf6e6673b438699da9ee704d05513145f047cb3df96501a17b1bf1cde58831e [2023-11-24 23:54:52,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:54:53,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:54:53,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:54:53,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:54:53,018 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:54:53,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i [2023-11-24 23:54:56,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:54:56,384 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:54:56,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i [2023-11-24 23:54:56,397 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data/1140becd4/ab875051bb7b4b0cbeb529e27c41861c/FLAGe5029be06 [2023-11-24 23:54:56,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data/1140becd4/ab875051bb7b4b0cbeb529e27c41861c [2023-11-24 23:54:56,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:54:56,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:54:56,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:56,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:54:56,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:54:56,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7157d768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56, skipping insertion in model container [2023-11-24 23:54:56,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:54:56,616 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i[915,928] [2023-11-24 23:54:56,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:56,696 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:54:56,710 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i[915,928] [2023-11-24 23:54:56,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:56,757 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:54:56,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56 WrapperNode [2023-11-24 23:54:56,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:56,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:56,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:54:56,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:54:56,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,824 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 132 [2023-11-24 23:54:56,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:56,825 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:54:56,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:54:56,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:54:56,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:54:56,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:54:56,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:54:56,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:54:56,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (1/1) ... [2023-11-24 23:54:56,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:56,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:56,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:54:56,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:54:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:54:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:54:56,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:54:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:54:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:54:56,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:54:57,032 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:54:57,034 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:54:57,419 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:54:57,635 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:54:57,636 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:54:57,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:57 BoogieIcfgContainer [2023-11-24 23:54:57,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:54:57,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:54:57,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:54:57,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:54:57,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:54:56" (1/3) ... [2023-11-24 23:54:57,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac029fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:57, skipping insertion in model container [2023-11-24 23:54:57,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:56" (2/3) ... [2023-11-24 23:54:57,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac029fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:57, skipping insertion in model container [2023-11-24 23:54:57,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:57" (3/3) ... [2023-11-24 23:54:57,648 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-66.i [2023-11-24 23:54:57,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:54:57,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:54:57,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:54:57,724 INFO L357 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6cc3d63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:54:57,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:54:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-24 23:54:57,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-24 23:54:57,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:57,741 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:54:57,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:54:57,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1278466508, now seen corresponding path program 1 times [2023-11-24 23:54:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:54:57,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360208610] [2023-11-24 23:54:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:54:57,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:54:57,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244437538] [2023-11-24 23:54:57,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:57,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:57,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:57,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:54:57,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:54:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:54:58,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:54:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:54:58,319 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:54:58,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:54:58,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:54:58,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:54:58,538 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:54:58,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:54:58,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:54:58 BoogieIcfgContainer [2023-11-24 23:54:58,670 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:54:58,671 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:54:58,671 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:54:58,672 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:54:58,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:57" (3/4) ... [2023-11-24 23:54:58,677 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:54:58,678 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:54:58,679 INFO L158 Benchmark]: Toolchain (without parser) took 2261.61ms. Allocated memory is still 186.6MB. Free memory was 147.5MB in the beginning and 112.4MB in the end (delta: 35.0MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-11-24 23:54:58,680 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 132.1MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:54:58,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.96ms. Allocated memory is still 186.6MB. Free memory was 147.5MB in the beginning and 133.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:54:58,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.83ms. Allocated memory is still 186.6MB. Free memory was 133.7MB in the beginning and 130.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:58,688 INFO L158 Benchmark]: Boogie Preprocessor took 41.61ms. Allocated memory is still 186.6MB. Free memory was 130.7MB in the beginning and 129.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:58,690 INFO L158 Benchmark]: RCFGBuilder took 770.10ms. Allocated memory is still 186.6MB. Free memory was 129.1MB in the beginning and 148.9MB in the end (delta: -19.8MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-11-24 23:54:58,691 INFO L158 Benchmark]: TraceAbstraction took 1029.52ms. Allocated memory is still 186.6MB. Free memory was 148.1MB in the beginning and 113.3MB in the end (delta: 34.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-24 23:54:58,691 INFO L158 Benchmark]: Witness Printer took 6.94ms. Allocated memory is still 186.6MB. Free memory was 113.3MB in the beginning and 112.4MB in the end (delta: 828.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:54:58,698 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 132.1MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.96ms. Allocated memory is still 186.6MB. Free memory was 147.5MB in the beginning and 133.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.83ms. Allocated memory is still 186.6MB. Free memory was 133.7MB in the beginning and 130.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.61ms. Allocated memory is still 186.6MB. Free memory was 130.7MB in the beginning and 129.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 770.10ms. Allocated memory is still 186.6MB. Free memory was 129.1MB in the beginning and 148.9MB in the end (delta: -19.8MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1029.52ms. Allocated memory is still 186.6MB. Free memory was 148.1MB in the beginning and 113.3MB in the end (delta: 34.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 6.94ms. Allocated memory is still 186.6MB. Free memory was 113.3MB in the beginning and 112.4MB in the end (delta: 828.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 120. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = 50; [L23] signed char var_1_3 = 8; [L24] signed char var_1_4 = 10; [L25] double var_1_5 = 16.5; [L26] signed char var_1_6 = 64; [L27] signed char var_1_7 = 2; [L28] unsigned short int var_1_8 = 256; [L29] unsigned short int var_1_10 = 63583; [L30] unsigned short int var_1_11 = 33789; [L31] unsigned char var_1_12 = 1; [L32] unsigned char var_1_14 = 0; [L33] signed long int var_1_15 = 8; [L34] signed short int var_1_16 = -16; [L35] signed short int var_1_18 = 16; [L36] signed short int var_1_19 = 25; [L37] signed short int var_1_20 = 25; [L38] signed short int var_1_21 = 50; [L39] unsigned char last_1_var_1_12 = 1; [L124] isInitial = 1 [L125] FCALL initially() [L126] COND TRUE 1 [L127] CALL updateLastVariables() [L117] last_1_var_1_12 = var_1_12 [L127] RET updateLastVariables() [L128] CALL updateVariables() [L88] var_1_3 = __VERIFIER_nondet_char() [L89] CALL assume_abort_if_not(var_1_3 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=10, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_3 >= -63) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=10, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L90] CALL assume_abort_if_not(var_1_3 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=10, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_3 <= 63) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=10, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L91] var_1_4 = __VERIFIER_nondet_char() [L92] CALL assume_abort_if_not(var_1_4 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_4 >= -63) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L93] CALL assume_abort_if_not(var_1_4 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_4 <= 63) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=64, var_1_7=2, var_1_8=256] [L94] var_1_6 = __VERIFIER_nondet_char() [L95] CALL assume_abort_if_not(var_1_6 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=2, var_1_8=256] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_6 >= -1) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=2, var_1_8=256] [L96] CALL assume_abort_if_not(var_1_6 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=2, var_1_8=256] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_6 <= 127) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=2, var_1_8=256] [L97] var_1_7 = __VERIFIER_nondet_char() [L98] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L99] CALL assume_abort_if_not(var_1_7 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(var_1_7 <= 127) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=63583, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L100] var_1_10 = __VERIFIER_nondet_ushort() [L101] CALL assume_abort_if_not(var_1_10 >= 49150) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not(var_1_10 >= 49150) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L102] CALL assume_abort_if_not(var_1_10 <= 65534) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not(var_1_10 <= 65534) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=33789, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L103] var_1_11 = __VERIFIER_nondet_ushort() [L104] CALL assume_abort_if_not(var_1_11 >= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L104] RET assume_abort_if_not(var_1_11 >= 32767) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L105] CALL assume_abort_if_not(var_1_11 <= 65534) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not(var_1_11 <= 65534) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L106] var_1_14 = __VERIFIER_nondet_uchar() [L107] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L108] CALL assume_abort_if_not(var_1_14 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L108] RET assume_abort_if_not(var_1_14 <= 0) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=25, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L109] var_1_20 = __VERIFIER_nondet_short() [L110] CALL assume_abort_if_not(var_1_20 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L110] RET assume_abort_if_not(var_1_20 >= 0) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L111] CALL assume_abort_if_not(var_1_20 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L111] RET assume_abort_if_not(var_1_20 <= 16383) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=50, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L112] var_1_21 = __VERIFIER_nondet_short() [L113] CALL assume_abort_if_not(var_1_21 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=0, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L113] RET assume_abort_if_not(var_1_21 >= 0) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=0, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L114] CALL assume_abort_if_not(var_1_21 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=0, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L20] COND FALSE !(!cond) [L114] RET assume_abort_if_not(var_1_21 <= 16383) VAL [isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=16, var_1_19=25, var_1_1=50, var_1_20=16383, var_1_21=0, var_1_3=-63, var_1_4=63, var_1_5=33/2, var_1_6=63, var_1_7=0, var_1_8=256] [L128] RET updateVariables() [L129] CALL step() [L43] signed char stepLocal_1 = var_1_6; [L44] unsigned char stepLocal_0 = last_1_var_1_12; [L45] COND FALSE !(-25 == stepLocal_1) [L50] var_1_8 = ((((var_1_7) > (var_1_11)) ? (var_1_7) : (var_1_11))) [L52] signed char stepLocal_2 = var_1_7; [L53] COND TRUE var_1_8 >= stepLocal_2 [L54] var_1_12 = (! var_1_14) [L56] COND TRUE \read(var_1_12) [L57] var_1_1 = (var_1_3 + var_1_4) [L59] COND TRUE var_1_4 >= (var_1_6 - var_1_7) [L60] COND TRUE \read(var_1_12) [L61] var_1_5 = 8.25 [L64] signed char stepLocal_4 = var_1_6; [L65] COND TRUE var_1_1 < stepLocal_4 [L66] var_1_18 = (var_1_6 - var_1_7) [L70] COND TRUE \read(var_1_12) [L71] var_1_19 = ((var_1_7 - ((((var_1_20) < (var_1_21)) ? (var_1_20) : (var_1_21)))) + var_1_6) [L73] COND FALSE !(-64 > (var_1_6 + var_1_19)) [L76] COND FALSE !(! var_1_12) [L82] signed long int stepLocal_3 = ((((var_1_11) > (var_1_18)) ? (var_1_11) : (var_1_18))) + (var_1_15 / var_1_10); [L83] COND FALSE !(var_1_19 > stepLocal_3) [L129] RET step() [L130] CALL, EXPR property() [L120-L121] return (((((((var_1_12 ? (var_1_1 == ((signed char) (var_1_3 + var_1_4))) : 1) && ((var_1_4 >= (var_1_6 - var_1_7)) ? (var_1_12 ? (var_1_5 == ((double) 8.25)) : 1) : 1)) && ((-25 == var_1_6) ? ((last_1_var_1_12 && last_1_var_1_12) ? (var_1_8 == ((unsigned short int) ((((((var_1_10 - 10) - 16)) > ((var_1_11 - var_1_7))) ? (((var_1_10 - 10) - 16)) : ((var_1_11 - var_1_7)))))) : 1) : (var_1_8 == ((unsigned short int) ((((var_1_7) > (var_1_11)) ? (var_1_7) : (var_1_11))))))) && ((var_1_8 >= var_1_7) ? (var_1_12 == ((unsigned char) (! var_1_14))) : 1)) && ((-64 > (var_1_6 + var_1_19)) ? (var_1_15 == ((signed long int) (var_1_11 - var_1_7))) : ((! var_1_12) ? (var_1_12 ? (var_1_15 == ((signed long int) 4)) : 1) : 1))) && ((var_1_19 > (((((var_1_11) > (var_1_18)) ? (var_1_11) : (var_1_18))) + (var_1_15 / var_1_10))) ? (var_1_16 == ((signed short int) var_1_4)) : 1)) && ((var_1_1 < var_1_6) ? (var_1_18 == ((signed short int) (var_1_6 - var_1_7))) : (var_1_18 == ((signed short int) (((((var_1_6 + var_1_4)) < (var_1_1)) ? ((var_1_6 + var_1_4)) : (var_1_1))))))) && (var_1_12 ? (var_1_19 == ((signed short int) ((var_1_7 - ((((var_1_20) < (var_1_21)) ? (var_1_20) : (var_1_21)))) + var_1_6))) : 1) ; [L130] RET, EXPR property() [L130] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=63, var_1_19=63, var_1_1=0, var_1_20=16383, var_1_21=0, var_1_3=-63, var_1_4=63, var_1_5=33/4, var_1_6=63, var_1_7=0, var_1_8=65534] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_12=1, var_1_10=65534, var_1_11=65534, var_1_12=1, var_1_14=0, var_1_15=8, var_1_16=-16, var_1_18=63, var_1_19=63, var_1_1=0, var_1_20=16383, var_1_21=0, var_1_3=-63, var_1_4=63, var_1_5=33/4, var_1_6=63, var_1_7=0, var_1_8=65534] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:54:58,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 1cf6e6673b438699da9ee704d05513145f047cb3df96501a17b1bf1cde58831e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:55:01,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:55:01,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-24 23:55:01,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:55:01,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:55:01,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:55:01,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:55:01,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:55:01,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:55:01,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:55:01,476 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:55:01,476 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:55:01,477 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:55:01,481 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:55:01,482 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:55:01,482 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:55:01,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:55:01,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:55:01,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:55:01,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:55:01,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:55:01,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:55:01,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:55:01,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:55:01,487 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:55:01,488 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:55:01,488 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:55:01,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:55:01,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:55:01,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:55:01,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:55:01,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:55:01,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:55:01,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:55:01,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:01,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:55:01,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:55:01,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:55:01,494 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:55:01,495 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:01,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:55:01,495 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:55:01,496 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:55:01,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:55:01,497 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cf6e6673b438699da9ee704d05513145f047cb3df96501a17b1bf1cde58831e [2023-11-24 23:55:01,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:02,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:02,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:02,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:02,009 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:02,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i [2023-11-24 23:55:05,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:05,782 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:05,783 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i [2023-11-24 23:55:05,792 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data/3f8b36508/7ec04f0d1acf443089dcdd67da8663ac/FLAG0d069e2ef [2023-11-24 23:55:05,808 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/data/3f8b36508/7ec04f0d1acf443089dcdd67da8663ac [2023-11-24 23:55:05,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:05,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:05,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:05,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:05,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:05,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:05" (1/1) ... [2023-11-24 23:55:05,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56642f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:05, skipping insertion in model container [2023-11-24 23:55:05,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:05" (1/1) ... [2023-11-24 23:55:05,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:06,005 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i[915,928] [2023-11-24 23:55:06,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:06,078 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:06,092 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-66.i[915,928] [2023-11-24 23:55:06,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:06,169 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:06,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06 WrapperNode [2023-11-24 23:55:06,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:06,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:06,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:06,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:06,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,249 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2023-11-24 23:55:06,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:06,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:06,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:06,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:06,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:06,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:06,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:06,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:06,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (1/1) ... [2023-11-24 23:55:06,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:06,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:06,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:06,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:06,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:06,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:55:06,436 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:55:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:55:06,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:06,567 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:06,571 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:07,034 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:07,096 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:07,097 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:07,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:07 BoogieIcfgContainer [2023-11-24 23:55:07,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:07,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:07,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:07,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:07,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:05" (1/3) ... [2023-11-24 23:55:07,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec2ac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:07, skipping insertion in model container [2023-11-24 23:55:07,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:06" (2/3) ... [2023-11-24 23:55:07,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec2ac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:07, skipping insertion in model container [2023-11-24 23:55:07,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:07" (3/3) ... [2023-11-24 23:55:07,107 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-66.i [2023-11-24 23:55:07,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:07,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:55:07,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:07,186 INFO L357 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24f1a0b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:07,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:55:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-24 23:55:07,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 23:55:07,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:07,215 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:07,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:55:07,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1567801026, now seen corresponding path program 1 times [2023-11-24 23:55:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:55:07,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087543124] [2023-11-24 23:55:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:07,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:55:07,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:55:07,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:55:07,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:55:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:07,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:55:07,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 406 proven. 78 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-24 23:55:10,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:18,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:55:18,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087543124] [2023-11-24 23:55:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087543124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:18,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [738099924] [2023-11-24 23:55:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:18,366 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:55:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:55:18,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:55:18,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-24 23:55:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:18,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:55:18,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 388 proven. 72 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-24 23:55:27,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [738099924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:36,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749860204] [2023-11-24 23:55:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:36,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:36,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:36,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:36,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edb0b73c-77e7-47e8-8a28-c8fa268b7539/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:55:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:36,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 23:55:36,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 395 proven. 102 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-24 23:55:48,722 INFO L327 TraceCheckSpWp]: Computing backward predicates...