./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2 --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 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:30,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:30,193 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:27:30,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:30,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:30,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:30,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:30,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:30,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:30,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:30,224 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:30,224 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:30,225 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:30,225 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:30,225 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:30,226 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:30,226 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:30,227 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:30,227 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:30,228 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:30,228 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:30,232 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:30,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:30,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:30,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:30,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:30,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:30,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:30,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:30,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:30,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:30,235 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:30,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:30,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:30,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:30,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:30,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:30,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:30,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:30,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:30,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:30,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:30,239 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:30,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:30,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:30,240 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:30,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:30,241 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_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2024-11-02 12:27:30,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:30,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:30,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:30,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:30,598 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:30,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c Unable to find full path for "g++" [2024-11-02 12:27:32,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:32,935 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:32,936 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c [2024-11-02 12:27:32,945 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/data/8fe5a2aca/8a7ea2e226d44e1e84af0b2c32b75f5c/FLAG33fd1f539 [2024-11-02 12:27:32,960 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/data/8fe5a2aca/8a7ea2e226d44e1e84af0b2c32b75f5c [2024-11-02 12:27:32,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:32,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:32,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:32,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:32,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:32,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:32" (1/1) ... [2024-11-02 12:27:32,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb4d595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:32, skipping insertion in model container [2024-11-02 12:27:32,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:32" (1/1) ... [2024-11-02 12:27:32,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:33,185 WARN L251 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_a624e1cf-369f-4bb8-9204-aa8ca43acb32/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c[573,586] [2024-11-02 12:27:33,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:33,209 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:33,222 WARN L251 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_a624e1cf-369f-4bb8-9204-aa8ca43acb32/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound5.c[573,586] [2024-11-02 12:27:33,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:33,248 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:33,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33 WrapperNode [2024-11-02 12:27:33,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:33,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:33,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:33,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:33,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,287 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-11-02 12:27:33,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:33,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:33,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:33,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:33,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:33,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:33,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:33,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:33,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (1/1) ... [2024-11-02 12:27:33,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:33,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:33,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:27:33,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:27:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:33,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:27:33,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:27:33,462 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:33,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:33,640 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:33,641 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:33,731 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:33,732 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:27:33,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:33 BoogieIcfgContainer [2024-11-02 12:27:33,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:33,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:33,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:33,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:33,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:32" (1/3) ... [2024-11-02 12:27:33,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1caa12cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:33, skipping insertion in model container [2024-11-02 12:27:33,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:33" (2/3) ... [2024-11-02 12:27:33,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1caa12cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:33, skipping insertion in model container [2024-11-02 12:27:33,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:33" (3/3) ... [2024-11-02 12:27:33,752 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound5.c [2024-11-02 12:27:33,773 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:33,773 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:27:33,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:33,838 INFO L333 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, 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;@2aa05ebf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:33,838 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:27:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:27:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:27:33,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:33,847 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:33,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:33,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:33,852 INFO L85 PathProgramCache]: Analyzing trace with hash 375362447, now seen corresponding path program 1 times [2024-11-02 12:27:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792855687] [2024-11-02 12:27:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:33,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:34,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:34,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792855687] [2024-11-02 12:27:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792855687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:34,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:34,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:27:34,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242266518] [2024-11-02 12:27:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:34,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:27:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:27:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:27:34,072 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:27:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:34,118 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-11-02 12:27:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:27:34,123 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-11-02 12:27:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:34,132 INFO L225 Difference]: With dead ends: 30 [2024-11-02 12:27:34,132 INFO L226 Difference]: Without dead ends: 16 [2024-11-02 12:27:34,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:27:34,141 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:34,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:27:34,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-02 12:27:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-02 12:27:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:27:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-02 12:27:34,187 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2024-11-02 12:27:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:34,188 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-02 12:27:34,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:27:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-02 12:27:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:27:34,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:34,192 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:34,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:34,193 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:34,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:34,195 INFO L85 PathProgramCache]: Analyzing trace with hash 328203294, now seen corresponding path program 1 times [2024-11-02 12:27:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:34,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168446286] [2024-11-02 12:27:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:34,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:27:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798518337] [2024-11-02 12:27:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:34,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:34,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:27:34,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:27:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:34,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:27:34,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:27:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:34,574 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:27:34,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168446286] [2024-11-02 12:27:34,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:27:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798518337] [2024-11-02 12:27:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798518337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:34,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:27:34,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815491135] [2024-11-02 12:27:34,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:34,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:27:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:27:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:34,582 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:27:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:34,662 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-02 12:27:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:27:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-11-02 12:27:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:34,664 INFO L225 Difference]: With dead ends: 25 [2024-11-02 12:27:34,664 INFO L226 Difference]: Without dead ends: 23 [2024-11-02 12:27:34,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:27:34,666 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:34,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-02 12:27:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-02 12:27:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:27:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-02 12:27:34,675 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2024-11-02 12:27:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:34,675 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-02 12:27:34,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:27:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-02 12:27:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:27:34,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:34,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:34,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:27:34,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:34,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:34,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash 927627110, now seen corresponding path program 1 times [2024-11-02 12:27:34,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:34,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585730601] [2024-11-02 12:27:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:34,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:35,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585730601] [2024-11-02 12:27:35,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585730601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:27:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053120800] [2024-11-02 12:27:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:35,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:35,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:35,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:27:35,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:27:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:35,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-02 12:27:35,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:27:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:35,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:27:35,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053120800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:35,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:27:35,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-02 12:27:35,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275113108] [2024-11-02 12:27:35,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:35,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:27:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:27:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-02 12:27:35,658 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:27:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:35,744 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2024-11-02 12:27:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:27:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2024-11-02 12:27:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:35,747 INFO L225 Difference]: With dead ends: 30 [2024-11-02 12:27:35,747 INFO L226 Difference]: Without dead ends: 23 [2024-11-02 12:27:35,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:27:35,751 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:35,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-02 12:27:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-02 12:27:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:27:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-02 12:27:35,766 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2024-11-02 12:27:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:35,768 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-02 12:27:35,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:27:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-02 12:27:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:27:35,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:35,771 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:35,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:27:35,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:35,972 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:35,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash 138347192, now seen corresponding path program 1 times [2024-11-02 12:27:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:35,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114741293] [2024-11-02 12:27:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:35,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:27:36,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785172291] [2024-11-02 12:27:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:36,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:36,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:36,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:27:36,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:27:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:36,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-02 12:27:36,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:27:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:36,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:27:36,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:36,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114741293] [2024-11-02 12:27:36,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:27:36,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785172291] [2024-11-02 12:27:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785172291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:27:36,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1997086091] [2024-11-02 12:27:36,672 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-02 12:27:36,672 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:27:36,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:27:36,682 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:27:36,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:27:37,420 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2024-11-02 12:27:37,452 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:27:37,483 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:27:38,760 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '445#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:27:38,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:27:38,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:27:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-02 12:27:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110968277] [2024-11-02 12:27:38,762 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-02 12:27:38,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:27:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:27:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-02 12:27:38,770 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:27:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:38,916 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-02 12:27:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:27:38,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-11-02 12:27:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:38,918 INFO L225 Difference]: With dead ends: 32 [2024-11-02 12:27:38,918 INFO L226 Difference]: Without dead ends: 30 [2024-11-02 12:27:38,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-02 12:27:38,919 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:38,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-02 12:27:38,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-02 12:27:38,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:27:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-11-02 12:27:38,927 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2024-11-02 12:27:38,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:38,927 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-11-02 12:27:38,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:27:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-11-02 12:27:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:27:38,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:38,929 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:38,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:27:39,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:39,130 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:39,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash -459496832, now seen corresponding path program 1 times [2024-11-02 12:27:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331327491] [2024-11-02 12:27:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:27:39,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331327491] [2024-11-02 12:27:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331327491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:27:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699547415] [2024-11-02 12:27:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:39,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:39,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:39,434 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:27:39,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:27:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:39,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-02 12:27:39,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:27:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:27:39,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:27:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:27:39,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699547415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:27:39,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1683906485] [2024-11-02 12:27:39,709 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2024-11-02 12:27:39,710 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:27:39,711 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:27:39,711 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:27:39,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:27:40,158 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2024-11-02 12:27:40,170 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:27:40,191 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:27:41,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '717#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:27:41,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:27:41,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:27:41,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2024-11-02 12:27:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550221754] [2024-11-02 12:27:41,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:27:41,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:27:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:27:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-11-02 12:27:41,299 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:27:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:41,384 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-02 12:27:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:27:41,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 26 [2024-11-02 12:27:41,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:41,385 INFO L225 Difference]: With dead ends: 29 [2024-11-02 12:27:41,386 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:27:41,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-02 12:27:41,387 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:41,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:27:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:27:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:27:41,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-11-02 12:27:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:41,389 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:27:41,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:27:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:27:41,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:27:41,394 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:27:41,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:27:41,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:27:41,602 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-02 12:27:41,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:27:41,666 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:27:41,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:27:41 BoogieIcfgContainer [2024-11-02 12:27:41,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:27:41,693 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:27:41,693 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:27:41,693 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:27:41,694 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:33" (3/4) ... [2024-11-02 12:27:41,697 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:27:41,701 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-02 12:27:41,701 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-02 12:27:41,706 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-02 12:27:41,707 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-02 12:27:41,707 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-02 12:27:41,707 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:27:41,803 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:27:41,803 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:27:41,803 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:27:41,807 INFO L158 Benchmark]: Toolchain (without parser) took 8840.40ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 108.8MB in the beginning and 162.8MB in the end (delta: -54.0MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2024-11-02 12:27:41,807 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:27:41,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.06ms. Allocated memory is still 148.9MB. Free memory was 108.8MB in the beginning and 96.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 12:27:41,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.61ms. Allocated memory is still 148.9MB. Free memory was 96.2MB in the beginning and 94.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:27:41,808 INFO L158 Benchmark]: Boogie Preprocessor took 18.41ms. Allocated memory is still 148.9MB. Free memory was 94.6MB in the beginning and 93.8MB in the end (delta: 810.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:27:41,809 INFO L158 Benchmark]: RCFGBuilder took 425.39ms. Allocated memory is still 148.9MB. Free memory was 93.5MB in the beginning and 118.5MB in the end (delta: -25.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-11-02 12:27:41,809 INFO L158 Benchmark]: TraceAbstraction took 7951.47ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 117.9MB in the beginning and 168.0MB in the end (delta: -50.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2024-11-02 12:27:41,809 INFO L158 Benchmark]: Witness Printer took 110.61ms. Allocated memory is still 218.1MB. Free memory was 168.0MB in the beginning and 162.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 12:27:41,811 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 109.1MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.06ms. Allocated memory is still 148.9MB. Free memory was 108.8MB in the beginning and 96.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.61ms. Allocated memory is still 148.9MB. Free memory was 96.2MB in the beginning and 94.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.41ms. Allocated memory is still 148.9MB. Free memory was 94.6MB in the beginning and 93.8MB in the end (delta: 810.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.39ms. Allocated memory is still 148.9MB. Free memory was 93.5MB in the beginning and 118.5MB in the end (delta: -25.0MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7951.47ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 117.9MB in the beginning and 168.0MB in the end (delta: -50.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Witness Printer took 110.61ms. Allocated memory is still 218.1MB. Free memory was 168.0MB in the beginning and 162.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 222 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 162 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 60 mSDtfsCounter, 160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 512 SizeOfPredicates, 7 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 48/57 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (x1 == ((((long long) x2 * y1) + y2) + y3)) - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:27:41,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a624e1cf-369f-4bb8-9204-aa8ca43acb32/bin/utaipan-verify-DbMuA5NWw2/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 Writing output log to file Ultimate.log Result: TRUE