./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX --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 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:48:34,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:48:34,742 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:48:34,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:48:34,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:48:34,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:48:34,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:48:34,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:48:34,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:48:34,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:48:34,810 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:48:34,811 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:48:34,812 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:48:34,813 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:48:34,814 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:48:34,814 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:48:34,815 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:48:34,815 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:48:34,816 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:48:34,816 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:48:34,817 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:48:34,817 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:48:34,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:48:34,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:48:34,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:48:34,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:48:34,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:48:34,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:48:34,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:48:34,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:48:34,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:48:34,842 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:48:34,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:48:34,843 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:48:34,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:48:34,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:48:34,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:34,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:48:34,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:48:34,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:48:34,844 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:48:34,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:48:34,847 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:48:34,847 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:48:34,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:48:34,848 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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f [2023-11-12 00:48:35,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:48:35,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:48:35,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:48:35,181 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:48:35,182 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:48:35,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2023-11-12 00:48:38,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:48:38,437 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:48:38,438 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2023-11-12 00:48:38,446 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data/44343f96d/5cc4f0b2533f414faf6ed031032f6316/FLAG640c233d7 [2023-11-12 00:48:38,463 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data/44343f96d/5cc4f0b2533f414faf6ed031032f6316 [2023-11-12 00:48:38,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:48:38,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:48:38,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:38,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:48:38,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:48:38,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3288c612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38, skipping insertion in model container [2023-11-12 00:48:38,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,514 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:48:38,711 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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c[712,725] [2023-11-12 00:48:38,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:38,737 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:48:38,749 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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c[712,725] [2023-11-12 00:48:38,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:38,767 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:48:38,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38 WrapperNode [2023-11-12 00:48:38,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:38,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:38,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:48:38,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:48:38,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,803 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2023-11-12 00:48:38,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:38,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:48:38,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:48:38,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:48:38,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:48:38,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:48:38,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:48:38,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:48:38,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (1/1) ... [2023-11-12 00:48:38,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:38,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:48:38,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:48:38,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:48:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:48:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:48:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:48:38,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:48:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:48:38,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:48:38,972 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:48:38,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:48:39,171 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:48:39,211 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:48:39,212 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:48:39,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:39 BoogieIcfgContainer [2023-11-12 00:48:39,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:48:39,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:48:39,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:48:39,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:48:39,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:48:38" (1/3) ... [2023-11-12 00:48:39,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28affd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:39, skipping insertion in model container [2023-11-12 00:48:39,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:38" (2/3) ... [2023-11-12 00:48:39,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28affd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:39, skipping insertion in model container [2023-11-12 00:48:39,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:39" (3/3) ... [2023-11-12 00:48:39,228 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.c [2023-11-12 00:48:39,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:48:39,247 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:48:39,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:48:39,299 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;@5f870163, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:48:39,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:48:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:48:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:48:39,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:39,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:48:39,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:48:39,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1843522412, now seen corresponding path program 1 times [2023-11-12 00:48:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:48:39,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21133255] [2023-11-12 00:48:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:48:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:39,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:48:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:39,507 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:48:39,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:48:39,512 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:48:39,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:48:39,521 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:48:39,527 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:48:39,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:48:39 BoogieIcfgContainer [2023-11-12 00:48:39,555 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:48:39,559 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:48:39,559 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:48:39,560 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:48:39,561 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:39" (3/4) ... [2023-11-12 00:48:39,563 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:48:39,564 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:48:39,566 INFO L158 Benchmark]: Toolchain (without parser) took 1091.77ms. Allocated memory is still 172.0MB. Free memory was 141.1MB in the beginning and 123.4MB in the end (delta: 17.6MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-11-12 00:48:39,567 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:48:39,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.78ms. Allocated memory is still 172.0MB. Free memory was 140.9MB in the beginning and 136.1MB in the end (delta: 4.8MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2023-11-12 00:48:39,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.82ms. Allocated memory is still 172.0MB. Free memory was 136.1MB in the beginning and 134.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:48:39,570 INFO L158 Benchmark]: Boogie Preprocessor took 26.08ms. Allocated memory is still 172.0MB. Free memory was 134.0MB in the beginning and 133.2MB in the end (delta: 807.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:48:39,576 INFO L158 Benchmark]: RCFGBuilder took 384.36ms. Allocated memory is still 172.0MB. Free memory was 133.2MB in the beginning and 138.1MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 00:48:39,576 INFO L158 Benchmark]: TraceAbstraction took 337.99ms. Allocated memory is still 172.0MB. Free memory was 136.9MB in the beginning and 123.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:48:39,578 INFO L158 Benchmark]: Witness Printer took 5.29ms. Allocated memory is still 172.0MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:48:39,584 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.78ms. Allocated memory is still 172.0MB. Free memory was 140.9MB in the beginning and 136.1MB in the end (delta: 4.8MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.82ms. Allocated memory is still 172.0MB. Free memory was 136.1MB in the beginning and 134.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.08ms. Allocated memory is still 172.0MB. Free memory was 134.0MB in the beginning and 133.2MB in the end (delta: 807.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 384.36ms. Allocated memory is still 172.0MB. Free memory was 133.2MB in the beginning and 138.1MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 337.99ms. Allocated memory is still 172.0MB. Free memory was 136.9MB in the beginning and 123.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.29ms. Allocated memory is still 172.0MB. Free memory is still 123.4MB. 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 to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=1) [L14] COND FALSE !(!cond) [L28] RET assume_abort_if_not(a>=0 && a<=1) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, 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=13occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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 [2023-11-12 00:48:39,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX --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 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:48:42,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:48:42,527 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:48:42,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:48:42,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:48:42,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:48:42,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:48:42,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:48:42,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:48:42,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:48:42,583 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:48:42,584 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:48:42,584 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:48:42,585 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:48:42,586 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:48:42,586 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:48:42,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:48:42,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:48:42,588 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:48:42,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:48:42,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:48:42,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:48:42,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:48:42,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:48:42,592 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:48:42,592 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:48:42,593 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:48:42,593 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:48:42,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:48:42,594 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:48:42,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:48:42,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:48:42,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:48:42,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:42,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:48:42,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:48:42,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:48:42,598 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:48:42,598 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:48:42,598 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:48:42,599 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:48:42,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:48:42,599 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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 322f54fed62e27ecdc37b8dbd1ba5a40efbeb3c981a1a7430a57877b391f432f [2023-11-12 00:48:43,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:48:43,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:48:43,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:48:43,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:48:43,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:48:43,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2023-11-12 00:48:46,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:48:46,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:48:46,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c [2023-11-12 00:48:46,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data/9e5435e3f/263dc993f2434470a2f48af13562b1dc/FLAG2bc006dce [2023-11-12 00:48:46,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/data/9e5435e3f/263dc993f2434470a2f48af13562b1dc [2023-11-12 00:48:46,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:48:46,648 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:48:46,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:46,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:48:46,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:48:46,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:46,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3828dbd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46, skipping insertion in model container [2023-11-12 00:48:46,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:46,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:48:46,899 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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c[712,725] [2023-11-12 00:48:46,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:46,939 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:48:46,956 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_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound1.c[712,725] [2023-11-12 00:48:46,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:46,996 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:48:46,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46 WrapperNode [2023-11-12 00:48:46,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:46,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:46,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:48:46,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:48:47,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,056 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-11-12 00:48:47,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:47,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:48:47,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:48:47,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:48:47,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:48:47,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:48:47,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:48:47,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:48:47,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (1/1) ... [2023-11-12 00:48:47,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:47,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:48:47,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:48:47,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:48:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:48:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:48:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:48:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:48:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:48:47,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:48:47,292 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:48:47,294 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:48:49,044 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:48:49,050 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:48:49,050 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:48:49,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:49 BoogieIcfgContainer [2023-11-12 00:48:49,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:48:49,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:48:49,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:48:49,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:48:49,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:48:46" (1/3) ... [2023-11-12 00:48:49,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bda6c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:49, skipping insertion in model container [2023-11-12 00:48:49,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:46" (2/3) ... [2023-11-12 00:48:49,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bda6c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:49, skipping insertion in model container [2023-11-12 00:48:49,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:49" (3/3) ... [2023-11-12 00:48:49,065 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.c [2023-11-12 00:48:49,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:48:49,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:48:49,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:48:49,184 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;@2c491737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:48:49,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:48:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 00:48:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:49,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:49,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:49,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:48:49,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2023-11-12 00:48:49,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409553124] [2023-11-12 00:48:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:49,238 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 [2023-11-12 00:48:49,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:49,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:48:49,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:48:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:49,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:48:49,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:49,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:49,749 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409553124] [2023-11-12 00:48:49,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409553124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:49,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:49,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:49,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046217150] [2023-11-12 00:48:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:49,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:48:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:48:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:48:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:48:49,789 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:49,809 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-11-12 00:48:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:48:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-12 00:48:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:49,817 INFO L225 Difference]: With dead ends: 33 [2023-11-12 00:48:49,817 INFO L226 Difference]: Without dead ends: 14 [2023-11-12 00:48:49,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:48:49,824 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:49,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-12 00:48:49,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-12 00:48:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:48:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-12 00:48:49,862 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-11-12 00:48:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:49,863 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-12 00:48:49,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-12 00:48:49,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:48:49,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:49,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:49,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:50,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:48:50,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:48:50,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2023-11-12 00:48:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:50,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485317110] [2023-11-12 00:48:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:50,088 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 [2023-11-12 00:48:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:50,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:48:50,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/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 (3)] Waiting until timeout for monitored process [2023-11-12 00:48:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:50,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:48:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:48:50,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-11-12 00:48:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1799633092] [2023-11-12 00:48:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:50,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:48:50,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:48:50,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:48:50,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf95f3e-c5fa-481a-9300-a5a5cc9ea814/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-12 00:48:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:51,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:48:51,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:04,279 WARN L293 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-12 00:49:43,078 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (and (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse3)))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (and (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse3)))) (_ bv0 32)) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))))) is different from false