./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/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_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/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_91ca8924-1164-4290-92be-e03a852bbee0/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 709453c15b134f79f9a4611d8c8b0ef9c4b2e09dcca78e096999d06822ec2635 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:31:16,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:31:17,052 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:31:17,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:31:17,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:31:17,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:31:17,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:31:17,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:31:17,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:31:17,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:31:17,118 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:31:17,119 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:31:17,120 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:31:17,122 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:31:17,122 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:31:17,122 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:31:17,123 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:31:17,123 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:31:17,123 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:31:17,124 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:31:17,125 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:31:17,125 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:31:17,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:31:17,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:31:17,128 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:31:17,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:31:17,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:31:17,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:31:17,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:31:17,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:31:17,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:31:17,132 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:31:17,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:31:17,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:31:17,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:31:17,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:31:17,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:31:17,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:17,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:31:17,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:31:17,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:31:17,147 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:31:17,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:31:17,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:31:17,148 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:31:17,148 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:31:17,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:31:17,149 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_91ca8924-1164-4290-92be-e03a852bbee0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709453c15b134f79f9a4611d8c8b0ef9c4b2e09dcca78e096999d06822ec2635 [2023-11-23 20:31:17,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:31:17,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:31:17,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:31:17,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:31:17,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:31:17,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i [2023-11-23 20:31:20,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:31:21,183 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:31:21,185 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i [2023-11-23 20:31:21,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data/5e4a6abeb/b7e7d6fc630241598695827b238b5549/FLAGd97fd983e [2023-11-23 20:31:21,215 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data/5e4a6abeb/b7e7d6fc630241598695827b238b5549 [2023-11-23 20:31:21,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:31:21,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:31:21,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:21,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:31:21,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:31:21,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544e0177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21, skipping insertion in model container [2023-11-23 20:31:21,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:31:21,446 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_91ca8924-1164-4290-92be-e03a852bbee0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i[915,928] [2023-11-23 20:31:21,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:21,501 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:31:21,515 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_91ca8924-1164-4290-92be-e03a852bbee0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i[915,928] [2023-11-23 20:31:21,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:21,576 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:31:21,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21 WrapperNode [2023-11-23 20:31:21,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:21,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:21,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:31:21,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:31:21,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,642 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 96 [2023-11-23 20:31:21,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:21,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:31:21,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:31:21,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:31:21,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:31:21,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:31:21,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:31:21,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:31:21,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (1/1) ... [2023-11-23 20:31:21,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:21,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:31:21,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:31:21,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:31:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:31:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:31:21,771 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:31:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:31:21,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:31:21,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:31:21,854 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:31:21,857 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:31:22,222 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:31:22,338 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:31:22,338 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:31:22,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:22 BoogieIcfgContainer [2023-11-23 20:31:22,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:31:22,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:31:22,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:31:22,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:31:22,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:21" (1/3) ... [2023-11-23 20:31:22,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290b46eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:22, skipping insertion in model container [2023-11-23 20:31:22,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:21" (2/3) ... [2023-11-23 20:31:22,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290b46eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:22, skipping insertion in model container [2023-11-23 20:31:22,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:22" (3/3) ... [2023-11-23 20:31:22,351 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-76.i [2023-11-23 20:31:22,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:31:22,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:31:22,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:31:22,421 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;@62859b1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:31:22,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:31:22,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 20:31:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 20:31:22,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:22,434 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:22,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:22,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1170003361, now seen corresponding path program 1 times [2023-11-23 20:31:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:31:22,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413920951] [2023-11-23 20:31:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:31:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:31:22,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:31:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:31:22,994 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:31:22,996 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:31:22,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:31:23,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:31:23,008 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:31:23,012 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:31:23,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:31:23 BoogieIcfgContainer [2023-11-23 20:31:23,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:31:23,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:31:23,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:31:23,068 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:31:23,069 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:22" (3/4) ... [2023-11-23 20:31:23,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:31:23,072 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:31:23,074 INFO L158 Benchmark]: Toolchain (without parser) took 1854.50ms. Allocated memory was 125.8MB in the beginning and 172.0MB in the end (delta: 46.1MB). Free memory was 64.1MB in the beginning and 120.8MB in the end (delta: -56.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:31:23,074 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:31:23,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.62ms. Allocated memory was 125.8MB in the beginning and 172.0MB in the end (delta: 46.1MB). Free memory was 63.9MB in the beginning and 132.1MB in the end (delta: -68.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2023-11-23 20:31:23,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.78ms. Allocated memory is still 172.0MB. Free memory was 132.1MB in the beginning and 129.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:31:23,076 INFO L158 Benchmark]: Boogie Preprocessor took 32.08ms. Allocated memory is still 172.0MB. Free memory was 129.5MB in the beginning and 128.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:31:23,077 INFO L158 Benchmark]: RCFGBuilder took 664.17ms. Allocated memory is still 172.0MB. Free memory was 128.0MB in the beginning and 105.9MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 20:31:23,078 INFO L158 Benchmark]: TraceAbstraction took 724.17ms. Allocated memory is still 172.0MB. Free memory was 104.9MB in the beginning and 120.8MB in the end (delta: -15.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:31:23,078 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 172.0MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:31:23,081 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 125.8MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.62ms. Allocated memory was 125.8MB in the beginning and 172.0MB in the end (delta: 46.1MB). Free memory was 63.9MB in the beginning and 132.1MB in the end (delta: -68.2MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.78ms. Allocated memory is still 172.0MB. Free memory was 132.1MB in the beginning and 129.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.08ms. Allocated memory is still 172.0MB. Free memory was 129.5MB in the beginning and 128.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 664.17ms. Allocated memory is still 172.0MB. Free memory was 128.0MB in the beginning and 105.9MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 724.17ms. Allocated memory is still 172.0MB. Free memory was 104.9MB in the beginning and 120.8MB in the end (delta: -15.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.31ms. Allocated memory is still 172.0MB. Free memory is still 120.8MB. 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 40. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] unsigned char var_1_5 = 0; [L24] unsigned char var_1_6 = 0; [L25] unsigned char var_1_7 = 0; [L26] signed short int var_1_8 = 4; [L27] float var_1_10 = 16.4; [L28] signed short int var_1_11 = -25; [L29] float var_1_13 = 128.1; [L30] float var_1_14 = 31.4; [L31] unsigned char var_1_15 = 2; [L32] unsigned char var_1_16 = 0; [L33] signed long int var_1_17 = 5; [L34] float last_1_var_1_13 = 128.1; [L35] signed long int last_1_var_1_17 = 5; [L86] isInitial = 1 [L87] FCALL initially() [L88] int k_loop; [L89] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L89] COND TRUE k_loop < 1 [L90] CALL updateLastVariables() [L78] last_1_var_1_13 = var_1_13 [L79] last_1_var_1_17 = var_1_17 [L90] RET updateLastVariables() [L91] CALL updateVariables() [L60] var_1_5 = __VERIFIER_nondet_uchar() [L61] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_6=0, var_1_7=0, var_1_8=4] [L62] CALL assume_abort_if_not(var_1_5 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_5 <= 0) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L63] var_1_6 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_7=0, var_1_8=4] [L65] CALL assume_abort_if_not(var_1_6 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_6 <= 0) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L66] var_1_7 = __VERIFIER_nondet_uchar() [L67] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_8=4] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_8=4] [L68] CALL assume_abort_if_not(var_1_7 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_7 <= 0) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_10=82/5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L69] var_1_10 = __VERIFIER_nondet_float() [L70] CALL assume_abort_if_not((var_1_10 >= 0.0F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not((var_1_10 >= 0.0F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_14=157/5, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L71] var_1_14 = __VERIFIER_nondet_float() [L72] CALL assume_abort_if_not((var_1_14 >= -922337.2036854765600e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not((var_1_14 >= -922337.2036854765600e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_15=2, var_1_16=0, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L73] var_1_16 = __VERIFIER_nondet_uchar() [L74] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_15=2, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_15=2, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L75] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_15=2, var_1_16=50, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=-25, var_1_13=1281/10, var_1_15=2, var_1_16=50, var_1_17=5, var_1_1=1, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L91] RET updateVariables() [L92] CALL step() [L39] COND FALSE !(\read(var_1_5)) [L44] var_1_17 = var_1_8 [L45] var_1_13 = var_1_14 [L46] var_1_15 = var_1_16 [L47] signed long int stepLocal_0 = (- 5) + var_1_17; [L48] COND FALSE !(stepLocal_0 >= var_1_15) [L51] var_1_1 = ((var_1_5 && var_1_6) || var_1_7) [L53] COND TRUE var_1_10 >= 500.875f [L54] var_1_11 = ((((((((((((-50) < 0 ) ? -(-50) : (-50)))) > (var_1_8)) ? (((((-50) < 0 ) ? -(-50) : (-50)))) : (var_1_8)))) < (var_1_15)) ? (((((((((-50) < 0 ) ? -(-50) : (-50)))) > (var_1_8)) ? (((((-50) < 0 ) ? -(-50) : (-50)))) : (var_1_8)))) : (var_1_15))) [L92] RET step() [L93] CALL, EXPR property() [L82-L83] return ((((((((- 5) + var_1_17) >= var_1_15) ? (var_1_1 == ((unsigned char) (! var_1_5))) : (var_1_1 == ((unsigned char) ((var_1_5 && var_1_6) || var_1_7)))) && (var_1_5 ? ((0.4f > ((((last_1_var_1_13) < ((var_1_10 - 1.375f))) ? (last_1_var_1_13) : ((var_1_10 - 1.375f))))) ? (var_1_8 == ((signed short int) last_1_var_1_17)) : 1) : 1)) && ((var_1_10 >= 500.875f) ? (var_1_11 == ((signed short int) ((((((((((((-50) < 0 ) ? -(-50) : (-50)))) > (var_1_8)) ? (((((-50) < 0 ) ? -(-50) : (-50)))) : (var_1_8)))) < (var_1_15)) ? (((((((((-50) < 0 ) ? -(-50) : (-50)))) > (var_1_8)) ? (((((-50) < 0 ) ? -(-50) : (-50)))) : (var_1_8)))) : (var_1_15))))) : (var_1_11 == ((signed short int) var_1_15)))) && (var_1_13 == ((float) var_1_14))) && (var_1_15 == ((unsigned char) var_1_16))) && (var_1_17 == ((signed long int) var_1_8)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=50, var_1_13=133, var_1_14=133, var_1_15=50, var_1_16=50, var_1_17=4, var_1_1=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=1281/10, last_1_var_1_17=5, var_1_11=50, var_1_13=133, var_1_14=133, var_1_15=50, var_1_16=50, var_1_17=4, var_1_1=0, var_1_5=0, var_1_6=0, var_1_7=0, var_1_8=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 10, 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=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:31:23,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/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_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/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_91ca8924-1164-4290-92be-e03a852bbee0/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 709453c15b134f79f9a4611d8c8b0ef9c4b2e09dcca78e096999d06822ec2635 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:31:25,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:31:25,997 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 20:31:26,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:31:26,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:31:26,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:31:26,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:31:26,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:31:26,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:31:26,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:31:26,042 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:31:26,042 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:31:26,043 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:31:26,044 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:31:26,044 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:31:26,045 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:31:26,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:31:26,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:31:26,047 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:31:26,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:31:26,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:31:26,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:31:26,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:31:26,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:31:26,051 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:31:26,052 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:31:26,052 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:31:26,053 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:31:26,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:31:26,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:31:26,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:31:26,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:31:26,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:31:26,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:31:26,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:26,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:31:26,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:31:26,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:31:26,059 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:31:26,059 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:31:26,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:31:26,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:31:26,061 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:31:26,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:31:26,061 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_91ca8924-1164-4290-92be-e03a852bbee0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709453c15b134f79f9a4611d8c8b0ef9c4b2e09dcca78e096999d06822ec2635 [2023-11-23 20:31:26,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:31:26,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:31:26,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:31:26,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:31:26,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:31:26,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i [2023-11-23 20:31:30,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:31:30,274 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:31:30,275 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i [2023-11-23 20:31:30,284 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data/0112f06d8/dfac8400f2954bb8a5a56e68ddef72aa/FLAG2a8a12228 [2023-11-23 20:31:30,300 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/data/0112f06d8/dfac8400f2954bb8a5a56e68ddef72aa [2023-11-23 20:31:30,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:31:30,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:31:30,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:30,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:31:30,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:31:30,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22aff656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30, skipping insertion in model container [2023-11-23 20:31:30,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:31:30,503 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_91ca8924-1164-4290-92be-e03a852bbee0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i[915,928] [2023-11-23 20:31:30,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:30,563 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:31:30,586 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_91ca8924-1164-4290-92be-e03a852bbee0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-76.i[915,928] [2023-11-23 20:31:30,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:31:30,664 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:31:30,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30 WrapperNode [2023-11-23 20:31:30,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:31:30,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:30,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:31:30,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:31:30,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,765 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 96 [2023-11-23 20:31:30,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:31:30,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:31:30,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:31:30,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:31:30,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:31:30,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:31:30,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:31:30,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:31:30,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (1/1) ... [2023-11-23 20:31:30,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:31:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:31:30,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:31:30,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:31:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:31:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:31:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:31:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:31:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:31:30,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:31:31,052 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:31:31,056 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:31:31,514 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:31:31,576 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:31:31,576 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:31:31,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:31 BoogieIcfgContainer [2023-11-23 20:31:31,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:31:31,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:31:31,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:31:31,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:31:31,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:31:30" (1/3) ... [2023-11-23 20:31:31,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6365aa5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:31, skipping insertion in model container [2023-11-23 20:31:31,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:31:30" (2/3) ... [2023-11-23 20:31:31,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6365aa5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:31:31, skipping insertion in model container [2023-11-23 20:31:31,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:31:31" (3/3) ... [2023-11-23 20:31:31,587 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-76.i [2023-11-23 20:31:31,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:31:31,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:31:31,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:31:31,661 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;@728128cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:31:31,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:31:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 20:31:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 20:31:31,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:31,677 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:31,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:31,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1756347307, now seen corresponding path program 1 times [2023-11-23 20:31:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:31:31,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389290463] [2023-11-23 20:31:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:31,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:31:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:31:31,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:31:31,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 20:31:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:31,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 20:31:32,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:31:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 20:31:32,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:31:32,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:31:32,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389290463] [2023-11-23 20:31:32,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389290463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:31:32,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:31:32,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:31:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357518595] [2023-11-23 20:31:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:31:32,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:31:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:31:32,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:31:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:31:32,077 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 20:31:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:31:32,159 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-11-23 20:31:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:31:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2023-11-23 20:31:32,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:31:32,169 INFO L225 Difference]: With dead ends: 67 [2023-11-23 20:31:32,169 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 20:31:32,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:31:32,176 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:31:32,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:31:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 20:31:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-23 20:31:32,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 20:31:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 45 transitions. [2023-11-23 20:31:32,217 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 45 transitions. Word has length 65 [2023-11-23 20:31:32,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:31:32,218 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 45 transitions. [2023-11-23 20:31:32,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 20:31:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2023-11-23 20:31:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 20:31:32,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:31:32,222 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:31:32,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/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 20:31:32,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:31:32,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:31:32,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:31:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash -528969817, now seen corresponding path program 1 times [2023-11-23 20:31:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:31:32,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894142294] [2023-11-23 20:31:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:31:32,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:31:32,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:31:32,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:31:32,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ca8924-1164-4290-92be-e03a852bbee0/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 20:31:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:31:32,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 20:31:32,754 INFO L285 TraceCheckSpWp]: Computing forward predicates...