./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 22:59:31,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 22:59:31,089 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-12-02 22:59:31,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 22:59:31,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 22:59:31,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 22:59:31,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 22:59:31,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 22:59:31,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 22:59:31,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 22:59:31,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 22:59:31,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 22:59:31,120 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 22:59:31,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 22:59:31,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 22:59:31,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 22:59:31,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 22:59:31,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 22:59:31,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 22:59:31,123 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 22:59:31,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 22:59:31,124 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 22:59:31,125 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 22:59:31,125 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 22:59:31,126 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 22:59:31,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 22:59:31,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:59:31,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 22:59:31,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 22:59:31,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 22:59:31,128 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 22:59:31,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 22:59:31,129 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 22:59:31,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 [2023-12-02 22:59:31,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 22:59:31,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 22:59:31,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 22:59:31,363 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 22:59:31,364 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 22:59:31,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2023-12-02 22:59:34,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 22:59:34,236 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 22:59:34,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2023-12-02 22:59:34,243 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data/51da3dd29/463d2062b35f4b92a42e4c5651361ebd/FLAGec1661fca [2023-12-02 22:59:34,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data/51da3dd29/463d2062b35f4b92a42e4c5651361ebd [2023-12-02 22:59:34,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 22:59:34,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 22:59:34,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 22:59:34,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 22:59:34,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 22:59:34,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecc09d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34, skipping insertion in model container [2023-12-02 22:59:34,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 22:59:34,411 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_c7c08b5e-6004-4013-a0d4-f7d574f070e0/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2023-12-02 22:59:34,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:59:34,426 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 22:59:34,444 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_c7c08b5e-6004-4013-a0d4-f7d574f070e0/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2023-12-02 22:59:34,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:59:34,462 INFO L206 MainTranslator]: Completed translation [2023-12-02 22:59:34,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34 WrapperNode [2023-12-02 22:59:34,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 22:59:34,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 22:59:34,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 22:59:34,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 22:59:34,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,497 INFO L138 Inliner]: procedures = 18, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 101 [2023-12-02 22:59:34,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 22:59:34,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 22:59:34,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 22:59:34,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 22:59:34,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 22:59:34,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 22:59:34,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 22:59:34,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 22:59:34,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:59:34,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 22:59:34,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 22:59:34,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 22:59:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 22:59:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 22:59:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 22:59:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 22:59:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 22:59:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 22:59:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 22:59:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 22:59:34,662 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 22:59:34,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 22:59:34,789 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 22:59:34,812 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 22:59:34,812 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 22:59:34,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:59:34 BoogieIcfgContainer [2023-12-02 22:59:34,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 22:59:34,815 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 22:59:34,815 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 22:59:34,826 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 22:59:34,826 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:59:34" (1/1) ... [2023-12-02 22:59:34,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 22:59:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:59:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2023-12-02 22:59:34,893 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2023-12-02 22:59:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 22:59:34,896 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:59:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:59:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:59:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:59:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:59:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 20 states and 25 transitions. [2023-12-02 22:59:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-12-02 22:59:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 22:59:35,220 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:59:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:59:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:59:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:59:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:59:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 27 transitions. [2023-12-02 22:59:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-02 22:59:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 22:59:35,344 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:59:35,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:59:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:59:35,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 22:59:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:59:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:59:35,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 22:59:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:59:35,442 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2023-12-02 22:59:35,467 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated [2023-12-02 22:59:35,468 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-12-02 22:59:35,469 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-12-02 22:59:35,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 10:59:35 ImpRootNode [2023-12-02 22:59:35,475 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 22:59:35,476 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 22:59:35,476 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 22:59:35,476 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 22:59:35,477 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:59:34" (3/4) ... [2023-12-02 22:59:35,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 22:59:35,480 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 22:59:35,481 INFO L158 Benchmark]: Toolchain (without parser) took 1223.36ms. Allocated memory is still 157.3MB. Free memory was 126.0MB in the beginning and 66.6MB in the end (delta: 59.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2023-12-02 22:59:35,481 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 22:59:35,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.02ms. Allocated memory is still 157.3MB. Free memory was 125.7MB in the beginning and 114.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 22:59:35,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.53ms. Allocated memory is still 157.3MB. Free memory was 114.5MB in the beginning and 112.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 22:59:35,483 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 157.3MB. Free memory was 112.8MB in the beginning and 111.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 22:59:35,483 INFO L158 Benchmark]: RCFGBuilder took 288.14ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 99.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 22:59:35,484 INFO L158 Benchmark]: CodeCheck took 660.25ms. Allocated memory is still 157.3MB. Free memory was 99.5MB in the beginning and 67.0MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 22:59:35,485 INFO L158 Benchmark]: Witness Printer took 3.93ms. Allocated memory is still 157.3MB. Free memory was 67.0MB in the beginning and 66.6MB in the end (delta: 361.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 22:59:35,488 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 28 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 51]: 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 someBinaryFLOATComparisonOperation at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L1] int __return_main; [L14] int main__i; [L15] float main__z; [L16] float main__t; [L17] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] main__t = __VERIFIER_nondet_float() [L20] int main____CPAchecker_TMP_0; [L21] EXPR main__min[0] VAL [__return_main=0, main__max={28102:0}, main__min={28103:0}] [L21] COND TRUE main__t >= (main__min[0]) [L23] EXPR main__max[4UL] VAL [__return_main=0, main__max={28102:0}, main__min={28103:0}] [L23] COND TRUE main__t <= (main__max[4UL]) [L25] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__max={28102:0}, main__min={28103:0}] [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={28102:0}, main__min={28103:0}] [L31] COND TRUE main__i < 5UL [L33] EXPR main__max[main__i] VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={28102:0}, main__min={28103:0}] [L33] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={28102:0}, main__min={28103:0}] [L38] COND FALSE !(main__z >= 0.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={28102:0}, main__min={28103:0}] [L63] main____CPAchecker_TMP_1 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={28102:0}, main__min={28103:0}] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={28102:0}, main__min={28103:0}] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={28102:0}, main__min={28103:0}] [L51] reach_error() VAL [__VERIFIER_assert__cond=0, __return_main=0, __tmp_1=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={28102:0}, main__min={28103:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.02ms. Allocated memory is still 157.3MB. Free memory was 125.7MB in the beginning and 114.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.53ms. Allocated memory is still 157.3MB. Free memory was 114.5MB in the beginning and 112.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 157.3MB. Free memory was 112.8MB in the beginning and 111.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 288.14ms. Allocated memory is still 157.3MB. Free memory was 111.5MB in the beginning and 99.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 660.25ms. Allocated memory is still 157.3MB. Free memory was 99.5MB in the beginning and 67.0MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 3.93ms. Allocated memory is still 157.3MB. Free memory was 67.0MB in the beginning and 66.6MB in the end (delta: 361.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 22:59:35,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 22:59:37,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 22:59:37,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2023-12-02 22:59:37,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 22:59:37,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 22:59:37,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 22:59:37,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 22:59:37,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 22:59:37,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 22:59:37,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 22:59:37,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 22:59:37,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 22:59:37,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 22:59:37,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 22:59:37,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 22:59:37,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 22:59:37,536 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 22:59:37,537 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 22:59:37,537 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 22:59:37,537 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 22:59:37,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 22:59:37,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 22:59:37,541 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 22:59:37,541 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 22:59:37,541 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 22:59:37,542 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 22:59:37,542 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-02 22:59:37,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 22:59:37,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:59:37,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 22:59:37,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 22:59:37,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 22:59:37,544 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 22:59:37,544 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 22:59:37,545 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 22:59:37,545 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-02 22:59:37,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 22:59:37,545 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_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 [2023-12-02 22:59:37,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 22:59:37,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 22:59:37,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 22:59:37,855 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 22:59:37,855 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 22:59:37,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2023-12-02 22:59:40,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 22:59:40,757 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 22:59:40,758 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2023-12-02 22:59:40,764 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data/77b8642df/701bacf139e04e85bfb327796aa75cc7/FLAGd3838add9 [2023-12-02 22:59:40,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/data/77b8642df/701bacf139e04e85bfb327796aa75cc7 [2023-12-02 22:59:40,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 22:59:40,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 22:59:40,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 22:59:40,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 22:59:40,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 22:59:40,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:59:40" (1/1) ... [2023-12-02 22:59:40,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3b07f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:40, skipping insertion in model container [2023-12-02 22:59:40,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:59:40" (1/1) ... [2023-12-02 22:59:40,804 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 22:59:40,940 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_c7c08b5e-6004-4013-a0d4-f7d574f070e0/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2023-12-02 22:59:40,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:59:40,960 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 22:59:40,981 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_c7c08b5e-6004-4013-a0d4-f7d574f070e0/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2023-12-02 22:59:40,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:59:41,000 INFO L206 MainTranslator]: Completed translation [2023-12-02 22:59:41,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41 WrapperNode [2023-12-02 22:59:41,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 22:59:41,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 22:59:41,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 22:59:41,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 22:59:41,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,038 INFO L138 Inliner]: procedures = 19, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 102 [2023-12-02 22:59:41,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 22:59:41,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 22:59:41,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 22:59:41,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 22:59:41,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 22:59:41,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 22:59:41,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 22:59:41,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 22:59:41,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:41" (1/1) ... [2023-12-02 22:59:41,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:59:41,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 22:59:41,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 22:59:41,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 22:59:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 22:59:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 22:59:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 22:59:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 22:59:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 22:59:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 22:59:41,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 22:59:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 22:59:41,218 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 22:59:41,221 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 22:59:51,125 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 22:59:51,159 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 22:59:51,159 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 22:59:51,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:59:51 BoogieIcfgContainer [2023-12-02 22:59:51,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 22:59:51,162 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 22:59:51,163 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 22:59:51,170 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 22:59:51,170 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:59:51" (1/1) ... [2023-12-02 22:59:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 22:59:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:59:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2023-12-02 22:59:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2023-12-02 22:59:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 22:59:51,222 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:59:51,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 22:59:51,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 22:59:51,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 22:59:51,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-02 22:59:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:59:51,375 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 22:59:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:59:51,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 22:59:51,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 22:59:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:59:51,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-02 22:59:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:59:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 19 states and 25 transitions. [2023-12-02 22:59:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-02 22:59:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 22:59:51,832 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:59:51,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 22:59:51,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 22:59:51,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 22:59:51,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-12-02 22:59:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:59:51,941 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 22:59:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:59:52,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 22:59:52,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 22:59:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:59:52,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2023-12-02 22:59:52,200 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-12-02 22:59:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:59:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2023-12-02 22:59:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2023-12-02 22:59:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 22:59:52,305 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:59:52,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 22:59:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 22:59:52,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 22:59:52,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 22:59:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:59:52,999 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:00:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:00:00,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 23:00:00,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 23:00:02,926 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 23:00:02,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 75 [2023-12-02 23:00:41,372 WARN L293 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 23:00:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:00:47,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 23:01:00,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 23:01:02,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 23:01:56,199 WARN L293 SmtUtils]: Spent 10.08s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 23:02:03,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 7.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:04,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:14,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:19,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:24,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:25,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:33,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 7.64s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:35,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:02:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:02:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 25 states and 38 transitions. [2023-12-02 23:02:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 38 transitions. [2023-12-02 23:02:35,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 23:02:35,789 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:02:35,789 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:02:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:02:35,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:02:35,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-02 23:02:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:02:35,923 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:02:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:02:35,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 23:02:35,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 23:02:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:02:38,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-02 23:02:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:02:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2023-12-02 23:02:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2023-12-02 23:02:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 23:02:59,079 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:02:59,080 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:02:59,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:02:59,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:02:59,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 23:02:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:02:59,820 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:03:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:03:09,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 23:03:09,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 23:03:11,137 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 23:03:11,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 75 [2023-12-02 23:04:03,845 WARN L293 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 23:04:21,050 WARN L293 SmtUtils]: Spent 12.22s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 23:05:44,953 WARN L293 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 7 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 23:05:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:05:44,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 23:05:55,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:06:01,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:06:05,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:06:13,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 8.64s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:06:16,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:06:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:06:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 26 states and 38 transitions. [2023-12-02 23:06:16,189 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2023-12-02 23:06:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 23:06:16,189 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:06:16,190 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:06:16,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:06:16,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:06:16,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 23:06:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:06:16,584 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:06:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:06:16,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 23:06:16,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 23:06:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:06:23,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 23:06:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:06:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 27 states and 40 transitions. [2023-12-02 23:06:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2023-12-02 23:06:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 23:06:36,856 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:06:36,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:06:36,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:06:36,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:06:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 23:06:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:06:37,598 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-02 23:06:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 23:06:49,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 23:06:49,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 23:07:33,433 INFO L349 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-12-02 23:07:33,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 98 [2023-12-02 23:09:38,199 WARN L293 SmtUtils]: Spent 22.76s on a formula simplification. DAG size of input: 46 DAG size of output: 37 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 23:09:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 23:09:40,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c08b5e-6004-4013-a0d4-f7d574f070e0/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 23:12:31,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:12:44,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 12.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:12:58,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 13.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:13:09,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 11.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 23:13:20,343 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (.cse6 (= c_currentRoundingMode roundNearestTiesToEven))) (and (exists ((|ULTIMATE.start_main_~main__t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8)))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv12 32))) (= |c_ULTIMATE.start_main_~main__z~0#1| (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |ULTIMATE.start_main_~main__t~0#1| .cse1) (fp.sub c_currentRoundingMode .cse0 .cse1))) (= .cse2 .cse3) (= .cse1 .cse2) (fp.leq |ULTIMATE.start_main_~main__t~0#1| .cse0) (not (fp.leq |ULTIMATE.start_main_~main__t~0#1| .cse3))))) (not (and (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~main__t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2))) (.cse5 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.leq |ULTIMATE.start_main_~main__t~0#1| .cse4) (= .cse2 .cse4) (= .cse5 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~main__z~0#1| (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode |ULTIMATE.start_main_~main__t~0#1| .cse5) (fp.sub c_currentRoundingMode .cse4 .cse5))) (fp.geq |ULTIMATE.start_main_~main__t~0#1| .cse5)))) .cse6)) .cse6)) is different from false