./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ --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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:20:09,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:20:09,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:20:09,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:20:09,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:20:09,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:20:09,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:20:09,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:20:09,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:20:09,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:20:09,621 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:20:09,622 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:20:09,622 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:20:09,624 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:20:09,625 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:20:09,625 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:20:09,626 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:20:09,626 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:20:09,627 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:20:09,627 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:20:09,628 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:20:09,628 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:20:09,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:20:09,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:20:09,631 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:20:09,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:20:09,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:20:09,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:20:09,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:20:09,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:20:09,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:20:09,635 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:20:09,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:20:09,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:20:09,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:20:09,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:20:09,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:20:09,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:20:09,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:20:09,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:20:09,638 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:20:09,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:20:09,640 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:20:09,640 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:20:09,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:20:09,641 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_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2023-11-19 04:20:09,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:20:09,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:20:09,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:20:10,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:20:10,001 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:20:10,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-benchs/zonotope_tight.c [2023-11-19 04:20:13,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:20:13,366 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:20:13,366 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/sv-benchmarks/c/float-benchs/zonotope_tight.c [2023-11-19 04:20:13,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data/6c0cf6338/c9940bb4708342639761ec2057f50c3c/FLAGec65de10f [2023-11-19 04:20:13,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data/6c0cf6338/c9940bb4708342639761ec2057f50c3c [2023-11-19 04:20:13,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:20:13,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:20:13,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:20:13,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:20:13,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:20:13,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26dd5914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13, skipping insertion in model container [2023-11-19 04:20:13,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,427 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:20:13,615 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_2a545e54-dc49-4766-8857-6845266a182a/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2023-11-19 04:20:13,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:20:13,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:20:13,653 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_2a545e54-dc49-4766-8857-6845266a182a/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2023-11-19 04:20:13,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:20:13,672 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:20:13,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13 WrapperNode [2023-11-19 04:20:13,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:20:13,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:20:13,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:20:13,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:20:13,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,709 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-11-19 04:20:13,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:20:13,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:20:13,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:20:13,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:20:13,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:20:13,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:20:13,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:20:13,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:20:13,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (1/1) ... [2023-11-19 04:20:13,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:20:13,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:20:13,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:20:13,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:20:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:20:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:20:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:20:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:20:13,889 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:20:13,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:20:13,992 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:20:14,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:20:14,101 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:20:14,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:14 BoogieIcfgContainer [2023-11-19 04:20:14,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:20:14,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:20:14,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:20:14,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:20:14,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:20:13" (1/3) ... [2023-11-19 04:20:14,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3d4011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:14, skipping insertion in model container [2023-11-19 04:20:14,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:13" (2/3) ... [2023-11-19 04:20:14,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3d4011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:14, skipping insertion in model container [2023-11-19 04:20:14,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:14" (3/3) ... [2023-11-19 04:20:14,115 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2023-11-19 04:20:14,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:20:14,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:20:14,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:20:14,213 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;@59df7f3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:20:14,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:20:14,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:20:14,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:20:14,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:20:14,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:20:14,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:20:14,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:20:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 67880, now seen corresponding path program 1 times [2023-11-19 04:20:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:20:14,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524494719] [2023-11-19 04:20:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:20:14,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:20:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:20:14,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:20:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:20:14,385 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:20:14,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:20:14,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:20:14,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:20:14,396 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:20:14,401 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:20:14,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:20:14 BoogieIcfgContainer [2023-11-19 04:20:14,418 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:20:14,419 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:20:14,419 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:20:14,419 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:20:14,420 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:14" (3/4) ... [2023-11-19 04:20:14,422 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:20:14,424 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:20:14,425 INFO L158 Benchmark]: Toolchain (without parser) took 1031.10ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 75.7MB in the end (delta: 38.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-19 04:20:14,425 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 153.1MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:20:14,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.02ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 103.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:20:14,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.81ms. Allocated memory is still 153.1MB. Free memory was 103.8MB in the beginning and 102.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:20:14,433 INFO L158 Benchmark]: Boogie Preprocessor took 36.92ms. Allocated memory is still 153.1MB. Free memory was 102.4MB in the beginning and 101.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:20:14,434 INFO L158 Benchmark]: RCFGBuilder took 357.14ms. Allocated memory is still 153.1MB. Free memory was 101.3MB in the beginning and 89.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:20:14,435 INFO L158 Benchmark]: TraceAbstraction took 310.18ms. Allocated memory is still 153.1MB. Free memory was 89.1MB in the beginning and 76.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:20:14,435 INFO L158 Benchmark]: Witness Printer took 4.94ms. Allocated memory is still 153.1MB. Free memory was 76.1MB in the beginning and 75.7MB in the end (delta: 381.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:20:14,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 153.1MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.02ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 103.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.81ms. Allocated memory is still 153.1MB. Free memory was 103.8MB in the beginning and 102.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.92ms. Allocated memory is still 153.1MB. Free memory was 102.4MB in the beginning and 101.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.14ms. Allocated memory is still 153.1MB. Free memory was 101.3MB in the beginning and 89.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 310.18ms. Allocated memory is still 153.1MB. Free memory was 89.1MB in the beginning and 76.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.94ms. Allocated memory is still 153.1MB. Free memory was 76.1MB in the beginning and 75.7MB in the end (delta: 381.7kB). 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: 14]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L21] CALL assume_abort_if_not(x >= 0. && x <= 10.) [L12] COND FALSE !(!cond) [L21] RET assume_abort_if_not(x >= 0. && x <= 10.) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L27] CALL __VERIFIER_assert(y >= 0. && y <= 4.) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 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=6occurred 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, 3 NumberOfCodeBlocks, 3 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 [2023-11-19 04:20:14,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ --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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:20:17,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:20:17,360 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:20:17,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:20:17,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:20:17,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:20:17,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:20:17,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:20:17,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:20:17,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:20:17,397 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:20:17,398 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:20:17,399 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:20:17,399 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:20:17,400 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:20:17,400 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:20:17,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:20:17,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:20:17,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:20:17,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:20:17,404 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:20:17,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:20:17,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:20:17,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:20:17,406 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:20:17,406 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:20:17,407 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:20:17,407 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:20:17,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:20:17,408 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:20:17,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:20:17,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:20:17,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:20:17,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:20:17,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:20:17,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:20:17,411 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:20:17,411 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:20:17,411 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:20:17,412 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:20:17,412 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:20:17,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:20:17,413 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_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2023-11-19 04:20:17,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:20:17,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:20:17,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:20:17,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:20:17,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:20:17,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-benchs/zonotope_tight.c [2023-11-19 04:20:21,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:20:21,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:20:21,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/sv-benchmarks/c/float-benchs/zonotope_tight.c [2023-11-19 04:20:21,347 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data/8a7d60c1c/a961c8255cc043b69b07b7d5667552cd/FLAGe49f4f774 [2023-11-19 04:20:21,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/data/8a7d60c1c/a961c8255cc043b69b07b7d5667552cd [2023-11-19 04:20:21,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:20:21,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:20:21,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:20:21,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:20:21,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:20:21,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44beaced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21, skipping insertion in model container [2023-11-19 04:20:21,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,400 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:20:21,574 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_2a545e54-dc49-4766-8857-6845266a182a/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2023-11-19 04:20:21,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:20:21,614 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:20:21,631 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_2a545e54-dc49-4766-8857-6845266a182a/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2023-11-19 04:20:21,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:20:21,663 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:20:21,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21 WrapperNode [2023-11-19 04:20:21,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:20:21,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:20:21,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:20:21,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:20:21,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,715 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2023-11-19 04:20:21,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:20:21,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:20:21,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:20:21,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:20:21,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:20:21,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:20:21,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:20:21,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:20:21,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (1/1) ... [2023-11-19 04:20:21,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:20:21,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:20:21,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:20:21,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:20:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:20:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:20:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:20:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:20:21,974 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:20:21,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:20:24,634 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:20:24,642 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:20:24,642 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:20:24,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:24 BoogieIcfgContainer [2023-11-19 04:20:24,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:20:24,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:20:24,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:20:24,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:20:24,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:20:21" (1/3) ... [2023-11-19 04:20:24,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ba1e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:24, skipping insertion in model container [2023-11-19 04:20:24,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:20:21" (2/3) ... [2023-11-19 04:20:24,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ba1e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:20:24, skipping insertion in model container [2023-11-19 04:20:24,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:20:24" (3/3) ... [2023-11-19 04:20:24,671 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2023-11-19 04:20:24,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:20:24,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:20:24,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:20:24,773 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;@6dbd7d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:20:24,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:20:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:20:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:20:24,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:20:24,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:20:24,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:20:24,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:20:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2023-11-19 04:20:24,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:20:24,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638654563] [2023-11-19 04:20:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:20:24,819 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 [2023-11-19 04:20:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:20:24,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:20:24,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:20:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:20:25,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:20:25,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:20:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:20:25,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:20:25,561 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:20:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638654563] [2023-11-19 04:20:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638654563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:20:25,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:20:25,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:20:25,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54157972] [2023-11-19 04:20:25,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:20:25,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:20:25,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:20:25,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:20:25,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:20:25,614 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:20:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:20:25,628 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-19 04:20:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:20:25,631 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:20:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:20:25,639 INFO L225 Difference]: With dead ends: 23 [2023-11-19 04:20:25,639 INFO L226 Difference]: Without dead ends: 9 [2023-11-19 04:20:25,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:20:25,647 INFO L413 NwaCegarLoop]: 13 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, 13 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 [2023-11-19 04:20:25,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:20:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-19 04:20:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-19 04:20:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:20:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 04:20:25,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2023-11-19 04:20:25,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:20:25,677 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 04:20:25,677 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:20:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 04:20:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:20:25,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:20:25,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:20:25,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:20:25,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:20:25,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:20:25,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:20:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2023-11-19 04:20:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:20:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142713951] [2023-11-19 04:20:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:20:25,899 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 [2023-11-19 04:20:25,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:20:25,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:20:25,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a545e54-dc49-4766-8857-6845266a182a/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:20:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:20:26,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:20:26,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:21:10,544 WARN L854 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (or (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (and (fp.leq |ULTIMATE.start_main_~x~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))))) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53))) (and (not (fp.geq (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| .cse0) (_ +zero 11 53))) (fp.geq |ULTIMATE.start_main_~x~0#1| (_ +zero 11 53))))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) is different from false