./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.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_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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_cd13ef1c-9521-483b-b18b-147039fd6e51/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 e0b92bdde1a6a66126d19d639f9e494a5579381be868a4b13fb2299a2d0086c0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:36,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:36,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:32:36,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:36,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:36,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:36,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:36,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:36,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:36,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:36,524 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:36,525 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:36,525 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:36,526 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:32:36,527 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:36,527 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:36,528 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:32:36,528 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:32:36,529 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:36,530 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:32:36,530 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:32:36,538 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:32:36,539 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:36,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:36,544 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:32:36,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:32:36,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:32:36,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:36,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:36,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:36,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:36,547 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:32:36,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:36,548 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:36,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:36,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:36,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:36,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:36,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:36,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:36,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:36,566 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:32:36,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:32:36,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:36,567 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:36,567 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:36,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:36,568 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_cd13ef1c-9521-483b-b18b-147039fd6e51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b92bdde1a6a66126d19d639f9e494a5579381be868a4b13fb2299a2d0086c0 [2023-11-23 20:32:36,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:36,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:36,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:36,908 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:36,908 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:36,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i [2023-11-23 20:32:40,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:40,383 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:40,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i [2023-11-23 20:32:40,405 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data/fc1bc6a98/9da8b3b9229341d1ab110b8e0306bbe5/FLAGb5d0e8ac9 [2023-11-23 20:32:40,437 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data/fc1bc6a98/9da8b3b9229341d1ab110b8e0306bbe5 [2023-11-23 20:32:40,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:40,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:40,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:40,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:40,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:40,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c019d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40, skipping insertion in model container [2023-11-23 20:32:40,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,516 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:40,696 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_cd13ef1c-9521-483b-b18b-147039fd6e51/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i[915,928] [2023-11-23 20:32:40,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:40,792 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:40,806 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_cd13ef1c-9521-483b-b18b-147039fd6e51/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i[915,928] [2023-11-23 20:32:40,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:40,863 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:40,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40 WrapperNode [2023-11-23 20:32:40,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:40,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:40,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:40,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:40,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,958 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 167 [2023-11-23 20:32:40,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:40,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:40,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:40,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:40,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:40,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:41,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:41,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:41,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:41,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:41,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:41,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (1/1) ... [2023-11-23 20:32:41,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:41,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:41,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:41,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:32:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:32:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:32:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:41,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:41,339 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:41,342 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:41,801 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:42,077 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:42,078 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:32:42,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:42 BoogieIcfgContainer [2023-11-23 20:32:42,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:42,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:42,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:42,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:42,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:40" (1/3) ... [2023-11-23 20:32:42,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d477eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:42, skipping insertion in model container [2023-11-23 20:32:42,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:40" (2/3) ... [2023-11-23 20:32:42,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d477eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:42, skipping insertion in model container [2023-11-23 20:32:42,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:42" (3/3) ... [2023-11-23 20:32:42,091 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-63.i [2023-11-23 20:32:42,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:42,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:32:42,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:42,179 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;@270fd911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:42,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:32:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 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 20:32:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 20:32:42,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:42,200 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, 1, 1, 1] [2023-11-23 20:32:42,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:42,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1890925395, now seen corresponding path program 1 times [2023-11-23 20:32:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:32:42,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925323279] [2023-11-23 20:32:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:42,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:32:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:32:43,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:32:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:32:43,394 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:32:43,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:32:43,398 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:32:43,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:32:43,406 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:32:43,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:32:43,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:32:43 BoogieIcfgContainer [2023-11-23 20:32:43,527 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:32:43,528 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:32:43,528 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:32:43,528 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:32:43,529 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:42" (3/4) ... [2023-11-23 20:32:43,539 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:32:43,540 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:32:43,542 INFO L158 Benchmark]: Toolchain (without parser) took 3095.36ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 130.7MB in the beginning and 86.6MB in the end (delta: 44.1MB). Peak memory consumption was 77.3MB. Max. memory is 16.1GB. [2023-11-23 20:32:43,543 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:32:43,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.43ms. Allocated memory is still 159.4MB. Free memory was 130.7MB in the beginning and 116.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:32:43,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.72ms. Allocated memory is still 159.4MB. Free memory was 116.0MB in the beginning and 112.5MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:32:43,547 INFO L158 Benchmark]: Boogie Preprocessor took 47.69ms. Allocated memory is still 159.4MB. Free memory was 112.5MB in the beginning and 110.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:32:43,551 INFO L158 Benchmark]: RCFGBuilder took 1072.60ms. Allocated memory is still 159.4MB. Free memory was 110.4MB in the beginning and 80.8MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 20:32:43,553 INFO L158 Benchmark]: TraceAbstraction took 1444.51ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 80.1MB in the beginning and 86.6MB in the end (delta: -6.5MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-11-23 20:32:43,554 INFO L158 Benchmark]: Witness Printer took 12.70ms. Allocated memory is still 192.9MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:32:43,563 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 123.7MB. Free memory is still 96.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.43ms. Allocated memory is still 159.4MB. Free memory was 130.7MB in the beginning and 116.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.72ms. Allocated memory is still 159.4MB. Free memory was 116.0MB in the beginning and 112.5MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.69ms. Allocated memory is still 159.4MB. Free memory was 112.5MB in the beginning and 110.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1072.60ms. Allocated memory is still 159.4MB. Free memory was 110.4MB in the beginning and 80.8MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1444.51ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 80.1MB in the beginning and 86.6MB in the end (delta: -6.5MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Witness Printer took 12.70ms. Allocated memory is still 192.9MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 124, overapproximation of shiftRight at line 63, overapproximation of bitwiseOr at line 80, overapproximation of someBinaryArithmeticDOUBLEoperation at line 54, overapproximation of someBinaryDOUBLEComparisonOperation at line 54. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 64; [L23] unsigned char var_1_7 = 0; [L24] unsigned short int var_1_11 = 500; [L25] unsigned char var_1_13 = 64; [L26] unsigned char var_1_15 = 1; [L27] unsigned char var_1_16 = 8; [L28] double var_1_17 = 7.5; [L29] double var_1_18 = 31.125; [L30] double var_1_19 = 10.5; [L31] double var_1_20 = 0.0; [L32] double var_1_21 = 16.75; [L33] double var_1_22 = 2.5; [L34] double var_1_23 = 64.5; [L35] signed long int var_1_24 = 10; [L36] signed char var_1_26 = 16; [L37] signed char var_1_27 = 4; [L38] signed char var_1_28 = -10; [L39] float var_1_29 = 63.794; [L40] unsigned short int var_1_30 = 1; [L41] signed long int var_1_31 = -2; [L42] unsigned char var_1_32 = 64; [L43] signed long int last_1_var_1_1 = 64; [L44] unsigned char last_1_var_1_13 = 64; [L128] isInitial = 1 [L129] FCALL initially() [L130] COND TRUE 1 [L131] CALL updateLastVariables() [L120] last_1_var_1_1 = var_1_1 [L121] last_1_var_1_13 = var_1_13 [L131] RET updateLastVariables() [L132] CALL updateVariables() [L91] var_1_7 = __VERIFIER_nondet_uchar() [L92] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=1, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=1, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64] [L93] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=1, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=1, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L94] var_1_15 = __VERIFIER_nondet_uchar() [L95] CALL assume_abort_if_not(var_1_15 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_15 >= 0) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L96] CALL assume_abort_if_not(var_1_15 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_15 <= 254) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=8, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L97] var_1_16 = __VERIFIER_nondet_uchar() [L98] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L98] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L99] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_18=249/8, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L100] var_1_18 = __VERIFIER_nondet_double() [L101] CALL assume_abort_if_not((var_1_18 >= 0.0F && var_1_18 <= -1.0e-20F) || (var_1_18 <= 4611686.018427382800e+12F && var_1_18 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L101] RET assume_abort_if_not((var_1_18 >= 0.0F && var_1_18 <= -1.0e-20F) || (var_1_18 <= 4611686.018427382800e+12F && var_1_18 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_19=21/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L102] var_1_19 = __VERIFIER_nondet_double() [L103] CALL assume_abort_if_not((var_1_19 >= 0.0F && var_1_19 <= -1.0e-20F) || (var_1_19 <= 4611686.018427382800e+12F && var_1_19 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not((var_1_19 >= 0.0F && var_1_19 <= -1.0e-20F) || (var_1_19 <= 4611686.018427382800e+12F && var_1_19 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_20=0, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L104] var_1_20 = __VERIFIER_nondet_double() [L105] CALL assume_abort_if_not((var_1_20 >= 4611686.018427382800e+12F && var_1_20 <= -1.0e-20F) || (var_1_20 <= 9223372.036854765600e+12F && var_1_20 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L105] RET assume_abort_if_not((var_1_20 >= 4611686.018427382800e+12F && var_1_20 <= -1.0e-20F) || (var_1_20 <= 9223372.036854765600e+12F && var_1_20 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_21=67/4, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L106] var_1_21 = __VERIFIER_nondet_double() [L107] CALL assume_abort_if_not((var_1_21 >= 0.0F && var_1_21 <= -1.0e-20F) || (var_1_21 <= 4611686.018427382800e+12F && var_1_21 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L107] RET assume_abort_if_not((var_1_21 >= 0.0F && var_1_21 <= -1.0e-20F) || (var_1_21 <= 4611686.018427382800e+12F && var_1_21 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_22=5/2, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L108] var_1_22 = __VERIFIER_nondet_double() [L109] CALL assume_abort_if_not((var_1_22 >= -922337.2036854765600e+13F && var_1_22 <= -1.0e-20F) || (var_1_22 <= 9223372.036854765600e+12F && var_1_22 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L109] RET assume_abort_if_not((var_1_22 >= -922337.2036854765600e+13F && var_1_22 <= -1.0e-20F) || (var_1_22 <= 9223372.036854765600e+12F && var_1_22 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_23=129/2, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L110] var_1_23 = __VERIFIER_nondet_double() [L111] CALL assume_abort_if_not((var_1_23 >= -922337.2036854765600e+13F && var_1_23 <= -1.0e-20F) || (var_1_23 <= 9223372.036854765600e+12F && var_1_23 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L111] RET assume_abort_if_not((var_1_23 >= -922337.2036854765600e+13F && var_1_23 <= -1.0e-20F) || (var_1_23 <= 9223372.036854765600e+12F && var_1_23 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=4, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L112] var_1_27 = __VERIFIER_nondet_char() [L113] CALL assume_abort_if_not(var_1_27 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L113] RET assume_abort_if_not(var_1_27 >= -63) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L114] CALL assume_abort_if_not(var_1_27 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L114] RET assume_abort_if_not(var_1_27 <= 63) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-10, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L115] var_1_28 = __VERIFIER_nondet_char() [L116] CALL assume_abort_if_not(var_1_28 >= -63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-63, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L116] RET assume_abort_if_not(var_1_28 >= -63) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-63, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L117] CALL assume_abort_if_not(var_1_28 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-63, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L20] COND FALSE !(!cond) [L117] RET assume_abort_if_not(var_1_28 <= 63) VAL [isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=500, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=15/2, var_1_1=64, var_1_24=10, var_1_26=16, var_1_27=-1, var_1_28=-63, var_1_29=31897/500, var_1_30=1, var_1_31=-2, var_1_32=64, var_1_7=0] [L132] RET updateVariables() [L133] CALL step() [L48] signed long int stepLocal_1 = last_1_var_1_1; [L49] COND FALSE !(stepLocal_1 != last_1_var_1_13) [L52] var_1_31 = var_1_13 [L53] COND FALSE !(\read(var_1_7)) [L56] var_1_17 = var_1_22 [L58] COND FALSE !(\read(var_1_7)) [L61] var_1_32 = var_1_16 [L62] unsigned char stepLocal_0 = var_1_13; [L63] EXPR var_1_32 >> var_1_32 [L63] COND TRUE (var_1_32 >> var_1_32) < stepLocal_0 [L64] var_1_11 = var_1_32 [L66] var_1_30 = var_1_32 [L67] COND TRUE var_1_11 >= var_1_30 [L68] var_1_26 = (var_1_27 + var_1_28) [L70] unsigned short int stepLocal_2 = var_1_30; [L71] COND TRUE ! var_1_7 [L72] var_1_24 = (var_1_11 - ((((((((var_1_30) > (var_1_13)) ? (var_1_30) : (var_1_13)))) < ((var_1_30 + var_1_15))) ? (((((var_1_30) > (var_1_13)) ? (var_1_30) : (var_1_13)))) : ((var_1_30 + var_1_15))))) [L80] EXPR (var_1_31 + 4u) | var_1_30 [L80] COND TRUE 32u < ((var_1_31 + 4u) | var_1_30) [L81] var_1_1 = (var_1_26 + (var_1_26 + var_1_32)) [L133] RET step() [L134] CALL, EXPR property() [L124] EXPR (var_1_31 + 4u) | var_1_30 [L124] EXPR ((32u < ((var_1_31 + 4u) | var_1_30)) ? (var_1_1 == ((signed long int) (var_1_26 + (var_1_26 + var_1_32)))) : ((! var_1_7) ? (var_1_1 == ((signed long int) ((((var_1_26) < ((var_1_11 - var_1_32))) ? (var_1_26) : ((var_1_11 - var_1_32)))))) : (var_1_1 == ((signed long int) (var_1_32 - var_1_13))))) && (((var_1_32 >> var_1_32) < var_1_13) ? (var_1_11 == ((unsigned short int) var_1_32)) : 1) [L124] EXPR var_1_32 >> var_1_32 [L124] EXPR ((32u < ((var_1_31 + 4u) | var_1_30)) ? (var_1_1 == ((signed long int) (var_1_26 + (var_1_26 + var_1_32)))) : ((! var_1_7) ? (var_1_1 == ((signed long int) ((((var_1_26) < ((var_1_11 - var_1_32))) ? (var_1_26) : ((var_1_11 - var_1_32)))))) : (var_1_1 == ((signed long int) (var_1_32 - var_1_13))))) && (((var_1_32 >> var_1_32) < var_1_13) ? (var_1_11 == ((unsigned short int) var_1_32)) : 1) [L124-L125] return ((((((((((32u < ((var_1_31 + 4u) | var_1_30)) ? (var_1_1 == ((signed long int) (var_1_26 + (var_1_26 + var_1_32)))) : ((! var_1_7) ? (var_1_1 == ((signed long int) ((((var_1_26) < ((var_1_11 - var_1_32))) ? (var_1_26) : ((var_1_11 - var_1_32)))))) : (var_1_1 == ((signed long int) (var_1_32 - var_1_13))))) && (((var_1_32 >> var_1_32) < var_1_13) ? (var_1_11 == ((unsigned short int) var_1_32)) : 1)) && ((last_1_var_1_1 != last_1_var_1_13) ? (var_1_13 == ((unsigned char) ((((var_1_15) < (var_1_16)) ? (var_1_15) : (var_1_16))))) : 1)) && (var_1_7 ? (var_1_17 == ((double) ((((((var_1_18 + var_1_19) - (var_1_20 - var_1_21))) < (((((var_1_22) > (var_1_23)) ? (var_1_22) : (var_1_23))))) ? (((var_1_18 + var_1_19) - (var_1_20 - var_1_21))) : (((((var_1_22) > (var_1_23)) ? (var_1_22) : (var_1_23)))))))) : (var_1_17 == ((double) var_1_22)))) && ((! var_1_7) ? (var_1_24 == ((signed long int) (var_1_11 - ((((((((var_1_30) > (var_1_13)) ? (var_1_30) : (var_1_13)))) < ((var_1_30 + var_1_15))) ? (((((var_1_30) > (var_1_13)) ? (var_1_30) : (var_1_13)))) : ((var_1_30 + var_1_15))))))) : ((var_1_11 < var_1_30) ? (var_1_24 == ((signed long int) -4)) : (var_1_24 == ((signed long int) var_1_26))))) && ((var_1_11 >= var_1_30) ? (var_1_26 == ((signed char) (var_1_27 + var_1_28))) : 1)) && (var_1_7 ? (var_1_29 == ((float) var_1_20)) : 1)) && (var_1_30 == ((unsigned short int) var_1_32))) && (var_1_31 == ((signed long int) var_1_13))) && (var_1_32 == ((unsigned char) var_1_16)) ; [L134] RET, EXPR property() [L134] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=64, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=505, var_1_1=-64, var_1_20=31897/500, var_1_22=505, var_1_23=505, var_1_24=0, var_1_26=-64, var_1_27=-1, var_1_28=-63, var_1_29=31897/500, var_1_30=64, var_1_31=64, var_1_32=64, var_1_7=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=64, last_1_var_1_1=64, var_1_11=64, var_1_13=64, var_1_15=254, var_1_16=64, var_1_17=505, var_1_1=-64, var_1_20=31897/500, var_1_22=505, var_1_23=505, var_1_24=0, var_1_26=-64, var_1_27=-1, var_1_28=-63, var_1_29=31897/500, var_1_30=64, var_1_31=64, var_1_32=64, var_1_7=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, 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=36occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 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 20:32:43,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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_cd13ef1c-9521-483b-b18b-147039fd6e51/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 e0b92bdde1a6a66126d19d639f9e494a5579381be868a4b13fb2299a2d0086c0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:32:46,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:32:46,305 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 20:32:46,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:32:46,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:32:46,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:32:46,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:32:46,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:32:46,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:32:46,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:32:46,380 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:32:46,380 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:32:46,380 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:32:46,382 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:32:46,382 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:32:46,383 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:32:46,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:32:46,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:32:46,385 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:32:46,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:32:46,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:32:46,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:32:46,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:32:46,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:32:46,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:32:46,388 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:32:46,388 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:32:46,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:32:46,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:32:46,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:32:46,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:32:46,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:32:46,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:32:46,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:32:46,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:46,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:32:46,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:32:46,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:32:46,393 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:32:46,394 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:32:46,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:32:46,394 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:32:46,395 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:32:46,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:32:46,395 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_cd13ef1c-9521-483b-b18b-147039fd6e51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b92bdde1a6a66126d19d639f9e494a5579381be868a4b13fb2299a2d0086c0 [2023-11-23 20:32:46,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:32:46,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:32:46,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:32:46,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:32:46,888 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:32:46,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i [2023-11-23 20:32:50,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:32:50,455 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:32:50,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i [2023-11-23 20:32:50,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data/e33e24a41/0dea11e3428545f58b973aa35dab4d6f/FLAGeaaa62e97 [2023-11-23 20:32:50,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/data/e33e24a41/0dea11e3428545f58b973aa35dab4d6f [2023-11-23 20:32:50,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:32:50,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:32:50,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:50,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:32:50,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:32:50,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:50,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667527f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50, skipping insertion in model container [2023-11-23 20:32:50,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:50,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:32:50,687 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_cd13ef1c-9521-483b-b18b-147039fd6e51/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i[915,928] [2023-11-23 20:32:50,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:50,765 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:32:50,808 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_cd13ef1c-9521-483b-b18b-147039fd6e51/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-63.i[915,928] [2023-11-23 20:32:50,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:32:50,908 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:32:50,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50 WrapperNode [2023-11-23 20:32:50,910 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:32:50,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:50,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:32:50,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:32:50,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:50,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:50,980 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 135 [2023-11-23 20:32:50,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:32:50,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:32:50,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:32:50,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:32:50,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:50,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:32:51,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:32:51,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:32:51,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:32:51,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (1/1) ... [2023-11-23 20:32:51,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:32:51,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:32:51,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:32:51,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:32:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:32:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:32:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:32:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:32:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:32:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:32:51,234 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:32:51,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:32:55,826 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:32:55,878 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:32:55,878 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:32:55,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:55 BoogieIcfgContainer [2023-11-23 20:32:55,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:32:55,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:32:55,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:32:55,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:32:55,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:32:50" (1/3) ... [2023-11-23 20:32:55,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23618ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:55, skipping insertion in model container [2023-11-23 20:32:55,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:32:50" (2/3) ... [2023-11-23 20:32:55,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23618ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:32:55, skipping insertion in model container [2023-11-23 20:32:55,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:32:55" (3/3) ... [2023-11-23 20:32:55,889 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-63.i [2023-11-23 20:32:55,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:32:55,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:32:55,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:32:55,968 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;@25be14bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:32:55,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:32:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 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 20:32:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 20:32:55,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:55,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:55,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:55,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash -593136738, now seen corresponding path program 1 times [2023-11-23 20:32:56,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:32:56,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121146847] [2023-11-23 20:32:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:56,014 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 20:32:56,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:32:56,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 20:32:56,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 20:32:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:56,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 20:32:56,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-23 20:32:56,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:56,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:32:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121146847] [2023-11-23 20:32:56,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121146847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:56,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:56,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:32:56,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348047128] [2023-11-23 20:32:56,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:56,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:32:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:32:56,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:32:56,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:32:56,743 INFO L87 Difference]: Start difference. First operand has 53 states, 34 states have (on average 1.411764705882353) internal successors, (48), 35 states have internal predecessors, (48), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 20:32:58,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:32:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:32:58,884 INFO L93 Difference]: Finished difference Result 103 states and 174 transitions. [2023-11-23 20:32:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:32:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2023-11-23 20:32:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:32:58,914 INFO L225 Difference]: With dead ends: 103 [2023-11-23 20:32:58,915 INFO L226 Difference]: Without dead ends: 51 [2023-11-23 20:32:58,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 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 20:32:58,922 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:32:58,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 20:32:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-23 20:32:58,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-23 20:32:58,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 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 20:32:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2023-11-23 20:32:58,965 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 75 transitions. Word has length 107 [2023-11-23 20:32:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:32:58,966 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 75 transitions. [2023-11-23 20:32:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 20:32:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2023-11-23 20:32:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 20:32:58,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:32:58,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:32:58,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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)] Forceful destruction successful, exit code 0 [2023-11-23 20:32:59,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 20:32:59,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:32:59,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:32:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash 32285522, now seen corresponding path program 1 times [2023-11-23 20:32:59,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:32:59,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68899169] [2023-11-23 20:32:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:32:59,182 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 20:32:59,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:32:59,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 20:32:59,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 20:32:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:32:59,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:32:59,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:32:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-23 20:32:59,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:32:59,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:32:59,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68899169] [2023-11-23 20:32:59,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68899169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:32:59,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:32:59,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:32:59,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763470455] [2023-11-23 20:32:59,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:32:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:32:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:32:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:32:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:32:59,741 INFO L87 Difference]: Start difference. First operand 51 states and 75 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:33:02,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:04,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:06,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 20:33:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:33:06,189 INFO L93 Difference]: Finished difference Result 116 states and 170 transitions. [2023-11-23 20:33:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:33:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2023-11-23 20:33:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:33:06,193 INFO L225 Difference]: With dead ends: 116 [2023-11-23 20:33:06,193 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 20:33:06,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:33:06,195 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:33:06,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 136 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 3 Unknown, 0 Unchecked, 6.4s Time] [2023-11-23 20:33:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 20:33:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2023-11-23 20:33:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 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 20:33:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 87 transitions. [2023-11-23 20:33:06,209 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 87 transitions. Word has length 107 [2023-11-23 20:33:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:33:06,211 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 87 transitions. [2023-11-23 20:33:06,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 20:33:06,211 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 87 transitions. [2023-11-23 20:33:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 20:33:06,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:06,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:33:06,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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)] Forceful destruction successful, exit code 0 [2023-11-23 20:33:06,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 20:33:06,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:06,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:06,425 INFO L85 PathProgramCache]: Analyzing trace with hash 991515538, now seen corresponding path program 1 times [2023-11-23 20:33:06,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:33:06,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411534926] [2023-11-23 20:33:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:06,427 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 20:33:06,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:33:06,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 20:33:06,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd13ef1c-9521-483b-b18b-147039fd6e51/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 (4)] Waiting until timeout for monitored process [2023-11-23 20:33:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:33:06,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 20:33:06,860 INFO L285 TraceCheckSpWp]: Computing forward predicates...