./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire --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 fbed63e7ceb32b7a0e8cf5dc0c27da185670168d6f706e37fa0256a1876a7a11 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:31:34,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:31:34,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:31:34,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:31:34,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:31:35,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:31:35,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:31:35,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:31:35,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:31:35,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:31:35,026 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:31:35,027 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:31:35,027 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:31:35,029 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:31:35,029 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:31:35,030 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:31:35,030 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:31:35,030 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:31:35,031 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:31:35,031 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:31:35,032 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:31:35,032 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:31:35,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:31:35,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:31:35,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:31:35,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:31:35,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:31:35,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:31:35,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:31:35,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:31:35,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:31:35,038 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:31:35,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:31:35,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:31:35,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:31:35,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:31:35,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:31:35,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:35,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:31:35,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:31:35,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:31:35,041 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:31:35,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:31:35,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:31:35,042 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:31:35,043 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:31:35,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:31:35,043 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_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbed63e7ceb32b7a0e8cf5dc0c27da185670168d6f706e37fa0256a1876a7a11 [2023-11-23 20:31:35,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:31:35,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:31:35,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:31:35,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:31:35,427 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:31:35,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i [2023-11-23 20:31:38,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:31:38,842 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:31:38,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i [2023-11-23 20:31:38,854 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data/2da86f69e/ce7536ce361d4303bb154d5b796fd739/FLAG3544b5236 [2023-11-23 20:31:38,870 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data/2da86f69e/ce7536ce361d4303bb154d5b796fd739 [2023-11-23 20:31:38,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:31:38,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:31:38,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:38,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:31:38,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:31:38,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:38" (1/1) ... [2023-11-23 20:31:38,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4393d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:38, skipping insertion in model container [2023-11-23 20:31:38,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:38" (1/1) ... [2023-11-23 20:31:38,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:31:39,110 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_0200dea6-0610-43c3-840d-f4809dbd70ed/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i[916,929] [2023-11-23 20:31:39,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:39,167 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:31:39,180 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_0200dea6-0610-43c3-840d-f4809dbd70ed/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i[916,929] [2023-11-23 20:31:39,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:39,234 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:31:39,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39 WrapperNode [2023-11-23 20:31:39,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:39,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:39,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:31:39,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:31:39,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,336 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 105 [2023-11-23 20:31:39,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:39,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:31:39,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:31:39,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:31:39,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:31:39,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:31:39,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:31:39,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:31:39,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (1/1) ... [2023-11-23 20:31:39,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:39,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:31:39,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:31:39,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:31:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:31:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:31:39,510 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:31:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:31:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:31:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:31:39,657 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:31:39,688 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:31:40,054 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:31:40,183 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:31:40,184 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:31:40,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:40 BoogieIcfgContainer [2023-11-23 20:31:40,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:31:40,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:31:40,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:31:40,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:31:40,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:38" (1/3) ... [2023-11-23 20:31:40,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ac9b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:40, skipping insertion in model container [2023-11-23 20:31:40,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:39" (2/3) ... [2023-11-23 20:31:40,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ac9b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:40, skipping insertion in model container [2023-11-23 20:31:40,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:40" (3/3) ... [2023-11-23 20:31:40,197 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-24.i [2023-11-23 20:31:40,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:31:40,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:31:40,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:31:40,280 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;@7c04120c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:31:40,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:31:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 20:31:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 20:31:40,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:40,298 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:40,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:40,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash -60589443, now seen corresponding path program 1 times [2023-11-23 20:31:40,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933068646] [2023-11-23 20:31:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:40,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:31:40,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:31:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:31:40,937 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:31:40,939 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:31:40,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:31:40,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:31:40,947 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:31:40,951 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:31:41,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:31:41 BoogieIcfgContainer [2023-11-23 20:31:41,009 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:31:41,009 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:31:41,009 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:31:41,010 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:31:41,010 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:40" (3/4) ... [2023-11-23 20:31:41,012 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:31:41,013 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:31:41,015 INFO L158 Benchmark]: Toolchain (without parser) took 2137.61ms. Allocated memory was 115.3MB in the beginning and 153.1MB in the end (delta: 37.7MB). Free memory was 76.7MB in the beginning and 71.6MB in the end (delta: 5.1MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2023-11-23 20:31:41,015 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 84.5MB in the beginning and 84.5MB in the end (delta: 34.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:31:41,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.01ms. Allocated memory is still 115.3MB. Free memory was 76.7MB in the beginning and 64.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:31:41,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.52ms. Allocated memory is still 115.3MB. Free memory was 64.2MB in the beginning and 61.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:31:41,017 INFO L158 Benchmark]: Boogie Preprocessor took 72.36ms. Allocated memory is still 115.3MB. Free memory was 61.7MB in the beginning and 60.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:31:41,018 INFO L158 Benchmark]: RCFGBuilder took 775.32ms. Allocated memory was 115.3MB in the beginning and 153.1MB in the end (delta: 37.7MB). Free memory was 60.3MB in the beginning and 108.4MB in the end (delta: -48.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-11-23 20:31:41,019 INFO L158 Benchmark]: TraceAbstraction took 819.83ms. Allocated memory is still 153.1MB. Free memory was 107.3MB in the beginning and 72.5MB in the end (delta: 34.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-23 20:31:41,020 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 153.1MB. Free memory was 72.5MB in the beginning and 71.6MB in the end (delta: 921.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:31:41,024 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 84.5MB in the beginning and 84.5MB in the end (delta: 34.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.01ms. Allocated memory is still 115.3MB. Free memory was 76.7MB in the beginning and 64.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.52ms. Allocated memory is still 115.3MB. Free memory was 64.2MB in the beginning and 61.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.36ms. Allocated memory is still 115.3MB. Free memory was 61.7MB in the beginning and 60.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 775.32ms. Allocated memory was 115.3MB in the beginning and 153.1MB in the end (delta: 37.7MB). Free memory was 60.3MB in the beginning and 108.4MB in the end (delta: -48.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 819.83ms. Allocated memory is still 153.1MB. Free memory was 107.3MB in the beginning and 72.5MB in the end (delta: 34.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 153.1MB. Free memory was 72.5MB in the beginning and 71.6MB in the end (delta: 921.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 56. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = 32; [L23] unsigned char var_1_2 = 0; [L24] signed char var_1_4 = 16; [L25] signed char var_1_5 = 4; [L26] signed char var_1_6 = 0; [L27] unsigned short int var_1_7 = 0; [L28] unsigned short int var_1_10 = 55182; [L29] unsigned char var_1_12 = 0; [L30] unsigned char var_1_14 = 1; [L31] unsigned char var_1_15 = 1; [L32] unsigned char var_1_16 = 100; [L33] signed long int var_1_17 = 2; [L34] signed long int var_1_18 = 199; [L35] signed char var_1_19 = -128; [L93] isInitial = 1 [L94] FCALL initially() [L95] COND TRUE 1 [L96] FCALL updateLastVariables() [L97] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_4=16, var_1_5=4, var_1_6=0, var_1_7=0] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_4=16, var_1_5=4, var_1_6=0, var_1_7=0] [L63] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=16, var_1_5=4, var_1_6=0, var_1_7=0] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=16, var_1_5=4, var_1_6=0, var_1_7=0] [L64] var_1_4 = __VERIFIER_nondet_char() [L65] CALL assume_abort_if_not(var_1_4 >= -1) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=4, var_1_6=0, var_1_7=0] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_4 >= -1) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=4, var_1_6=0, var_1_7=0] [L66] CALL assume_abort_if_not(var_1_4 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=4, var_1_6=0, var_1_7=0] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_4 <= 126) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=4, var_1_6=0, var_1_7=0] [L67] var_1_5 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=0, var_1_7=0] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=0, var_1_7=0] [L69] CALL assume_abort_if_not(var_1_5 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=0, var_1_7=0] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_5 <= 126) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=0, var_1_7=0] [L70] var_1_6 = __VERIFIER_nondet_char() [L71] CALL assume_abort_if_not(var_1_6 >= -127) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_6 >= -127) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L72] CALL assume_abort_if_not(var_1_6 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_6 <= 126) VAL [isInitial=1, var_1_10=55182, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L73] var_1_10 = __VERIFIER_nondet_ushort() [L74] CALL assume_abort_if_not(var_1_10 >= 32767) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_10 >= 32767) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L75] CALL assume_abort_if_not(var_1_10 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_10 <= 65534) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L76] var_1_14 = __VERIFIER_nondet_uchar() [L77] CALL assume_abort_if_not(var_1_14 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_14 >= 1) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L78] CALL assume_abort_if_not(var_1_14 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_14 <= 1) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L79] var_1_15 = __VERIFIER_nondet_uchar() [L80] CALL assume_abort_if_not(var_1_15 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_15 >= 1) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L81] CALL assume_abort_if_not(var_1_15 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_15 <= 1) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=199, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L82] var_1_18 = __VERIFIER_nondet_long() [L83] CALL assume_abort_if_not(var_1_18 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=0, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_18 >= -2147483648) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=0, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L84] CALL assume_abort_if_not(var_1_18 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=0, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_18 <= 2147483647) VAL [isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=100, var_1_17=2, var_1_18=0, var_1_19=-128, var_1_1=32, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L97] RET updateVariables() [L98] CALL step() [L39] COND FALSE !(! var_1_2) [L42] var_1_12 = ((! var_1_15) || (! (! 0))) [L44] var_1_16 = var_1_5 [L45] var_1_17 = var_1_18 [L46] var_1_19 = var_1_4 [L47] COND FALSE !(var_1_12 || (64.75f < var_1_17)) [L54] var_1_1 = var_1_4 [L56] COND FALSE !((((((var_1_17 * 127.75)) > ((var_1_17 / 3.4))) ? ((var_1_17 * 127.75)) : ((var_1_17 / 3.4)))) >= var_1_17) [L98] RET step() [L99] CALL, EXPR property() [L89-L90] return ((((((var_1_12 || (64.75f < var_1_17)) ? (var_1_12 ? (var_1_1 == ((signed char) (var_1_4 - var_1_5))) : (var_1_1 == ((signed char) ((((((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5)))) < (var_1_6)) ? (((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5)))) : (var_1_6)))))) : (var_1_1 == ((signed char) var_1_4))) && (((((((var_1_17 * 127.75)) > ((var_1_17 / 3.4))) ? ((var_1_17 * 127.75)) : ((var_1_17 / 3.4)))) >= var_1_17) ? (var_1_7 == ((unsigned short int) (((((var_1_10 - (22925 - var_1_5))) < (var_1_16)) ? ((var_1_10 - (22925 - var_1_5))) : (var_1_16))))) : 1)) && ((! var_1_2) ? (var_1_12 == ((unsigned char) var_1_14)) : (var_1_12 == ((unsigned char) ((! var_1_15) || (! (! 0))))))) && (var_1_16 == ((unsigned char) var_1_5))) && (var_1_17 == ((signed long int) var_1_18))) && (var_1_19 == ((signed char) var_1_4)) ; [L99] RET, EXPR property() [L99] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=0, var_1_18=0, var_1_19=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=65534, var_1_12=0, var_1_14=1, var_1_15=1, var_1_16=1, var_1_17=0, var_1_18=0, var_1_19=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=1, var_1_6=2, var_1_7=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 16, 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=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 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 [2023-11-23 20:31:41,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire --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 fbed63e7ceb32b7a0e8cf5dc0c27da185670168d6f706e37fa0256a1876a7a11 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:31:43,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:31:43,763 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 20:31:43,772 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:31:43,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:31:43,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:31:43,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:31:43,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:31:43,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:31:43,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:31:43,823 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:31:43,823 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:31:43,824 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:31:43,826 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:31:43,826 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:31:43,827 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:31:43,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:31:43,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:31:43,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:31:43,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:31:43,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:31:43,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:31:43,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:31:43,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:31:43,832 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:31:43,833 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:31:43,833 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:31:43,834 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:31:43,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:31:43,835 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:31:43,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:31:43,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:31:43,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:31:43,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:31:43,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:43,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:31:43,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:31:43,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:31:43,839 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:31:43,840 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:31:43,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:31:43,840 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:31:43,841 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:31:43,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:31:43,842 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_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbed63e7ceb32b7a0e8cf5dc0c27da185670168d6f706e37fa0256a1876a7a11 [2023-11-23 20:31:44,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:31:44,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:31:44,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:31:44,282 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:31:44,283 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:31:44,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i [2023-11-23 20:31:47,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:31:47,740 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:31:47,741 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i [2023-11-23 20:31:47,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data/d5bae106b/22be52677455449e88cad1ea35170b03/FLAG5cb1c90b1 [2023-11-23 20:31:47,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/data/d5bae106b/22be52677455449e88cad1ea35170b03 [2023-11-23 20:31:47,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:31:47,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:31:47,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:47,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:31:47,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:31:47,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:47" (1/1) ... [2023-11-23 20:31:47,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df0310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:47, skipping insertion in model container [2023-11-23 20:31:47,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:47" (1/1) ... [2023-11-23 20:31:47,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:31:47,989 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_0200dea6-0610-43c3-840d-f4809dbd70ed/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i[916,929] [2023-11-23 20:31:48,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:48,047 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:31:48,061 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_0200dea6-0610-43c3-840d-f4809dbd70ed/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-24.i[916,929] [2023-11-23 20:31:48,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:48,105 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:31:48,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48 WrapperNode [2023-11-23 20:31:48,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:48,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:48,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:31:48,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:31:48,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,177 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2023-11-23 20:31:48,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:48,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:31:48,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:31:48,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:31:48,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:31:48,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:31:48,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:31:48,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:31:48,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (1/1) ... [2023-11-23 20:31:48,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:48,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:31:48,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:31:48,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:31:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:31:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:31:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:31:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:31:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:31:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:31:48,493 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:31:48,496 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:31:55,406 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:31:55,452 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:31:55,452 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:31:55,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:55 BoogieIcfgContainer [2023-11-23 20:31:55,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:31:55,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:31:55,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:31:55,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:31:55,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:47" (1/3) ... [2023-11-23 20:31:55,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63327195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:55, skipping insertion in model container [2023-11-23 20:31:55,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:48" (2/3) ... [2023-11-23 20:31:55,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63327195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:55, skipping insertion in model container [2023-11-23 20:31:55,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:55" (3/3) ... [2023-11-23 20:31:55,463 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-24.i [2023-11-23 20:31:55,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:31:55,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:31:55,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:31:55,546 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;@15e1c84e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:31:55,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:31:55,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 20:31:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 20:31:55,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:55,566 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:55,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:55,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:55,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1119712628, now seen corresponding path program 1 times [2023-11-23 20:31:55,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:31:55,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945301132] [2023-11-23 20:31:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:55,589 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 [2023-11-23 20:31:55,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:31:55,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:31:55,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:31:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:56,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 20:31:56,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:31:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-23 20:31:56,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:31:56,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:31:56,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945301132] [2023-11-23 20:31:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945301132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:56,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:56,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:31:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913065482] [2023-11-23 20:31:56,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:31:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:31:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:31:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:31:56,814 INFO L87 Difference]: Start difference. First operand has 42 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:31:59,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:31:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:59,175 INFO L93 Difference]: Finished difference Result 81 states and 142 transitions. [2023-11-23 20:31:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:31:59,272 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 97 [2023-11-23 20:31:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:59,279 INFO L225 Difference]: With dead ends: 81 [2023-11-23 20:31:59,279 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 20:31:59,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:31:59,288 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:31:59,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 20:31:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 20:31:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-23 20:31:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 20:31:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2023-11-23 20:31:59,332 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 59 transitions. Word has length 97 [2023-11-23 20:31:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:59,332 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 59 transitions. [2023-11-23 20:31:59,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:31:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 59 transitions. [2023-11-23 20:31:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 20:31:59,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:59,338 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:59,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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)] Ended with exit code 0 [2023-11-23 20:31:59,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:31:59,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:59,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1435593356, now seen corresponding path program 1 times [2023-11-23 20:31:59,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:31:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537006685] [2023-11-23 20:31:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:59,547 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 [2023-11-23 20:31:59,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:31:59,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 20:31:59,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 20:32:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:00,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 20:32:00,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 242 proven. 24 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-23 20:32:02,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 20:32:04,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:32:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537006685] [2023-11-23 20:32:04,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537006685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1633000190] [2023-11-23 20:32:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:04,020 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:32:04,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 20:32:04,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:32:04,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-23 20:32:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:05,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:32:05,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 235 proven. 15 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 20:32:06,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 20:32:06,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1633000190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:06,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831723399] [2023-11-23 20:32:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:06,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:32:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:06,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:32:06,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0200dea6-0610-43c3-840d-f4809dbd70ed/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:32:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:07,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:32:07,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 235 proven. 15 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 20:32:08,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:32:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-23 20:32:08,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831723399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:32:08,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 20:32:08,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6, 6, 6, 6] total 12 [2023-11-23 20:32:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268795103] [2023-11-23 20:32:08,748 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 20:32:08,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 20:32:08,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:32:08,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 20:32:08,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 20:32:08,757 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-23 20:32:13,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:15,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:17,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:19,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:21,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:23,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:25,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:27,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:29,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:31,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:34,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:36,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:38,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:40,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []