./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh --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 079768eb2ce141267a1411f9330cb4d0cef674bf78865555f3130b47379d643a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:31:09,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:31:09,265 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:31:09,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:31:09,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:31:09,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:31:09,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:31:09,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:31:09,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:31:09,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:31:09,300 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:31:09,300 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:31:09,301 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:31:09,301 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:31:09,302 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:31:09,302 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:31:09,303 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:31:09,303 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:31:09,304 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:31:09,304 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:31:09,305 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:31:09,306 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:31:09,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:31:09,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:31:09,307 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:31:09,308 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:31:09,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:31:09,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:31:09,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:31:09,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:31:09,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:31:09,310 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:31:09,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:31:09,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:31:09,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:31:09,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:31:09,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:31:09,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:31:09,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:31:09,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:31:09,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:31:09,313 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:31:09,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:31:09,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:31:09,314 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:31:09,314 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:31:09,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:31:09,314 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_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 079768eb2ce141267a1411f9330cb4d0cef674bf78865555f3130b47379d643a [2023-12-02 19:31:09,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:31:09,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:31:09,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:31:09,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:31:09,601 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:31:09,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2023-12-02 19:31:12,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:31:12,730 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:31:12,731 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2023-12-02 19:31:12,740 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/data/84673fd53/99f65237f31f4c6e9f2a318a05a54f81/FLAG8b1ea6f68 [2023-12-02 19:31:12,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/data/84673fd53/99f65237f31f4c6e9f2a318a05a54f81 [2023-12-02 19:31:12,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:31:12,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:31:12,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:31:12,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:31:12,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:31:12,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:31:12" (1/1) ... [2023-12-02 19:31:12,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e11ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:12, skipping insertion in model container [2023-12-02 19:31:12,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:31:12" (1/1) ... [2023-12-02 19:31:12,801 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:31:12,970 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_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2023-12-02 19:31:12,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:31:13,003 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:31:13,018 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_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2023-12-02 19:31:13,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:31:13,044 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:31:13,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13 WrapperNode [2023-12-02 19:31:13,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:31:13,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:31:13,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:31:13,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:31:13,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,086 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-12-02 19:31:13,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:31:13,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:31:13,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:31:13,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:31:13,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:31:13,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:31:13,114 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:31:13,114 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:31:13,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (1/1) ... [2023-12-02 19:31:13,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:31:13,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:13,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:31:13,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:31:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:31:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:31:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:31:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:31:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 19:31:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 19:31:13,241 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:31:13,243 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:31:13,392 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:31:13,443 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:31:13,444 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:31:13,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:31:13 BoogieIcfgContainer [2023-12-02 19:31:13,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:31:13,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:31:13,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:31:13,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:31:13,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:31:12" (1/3) ... [2023-12-02 19:31:13,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c3e23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:31:13, skipping insertion in model container [2023-12-02 19:31:13,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:31:13" (2/3) ... [2023-12-02 19:31:13,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c3e23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:31:13, skipping insertion in model container [2023-12-02 19:31:13,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:31:13" (3/3) ... [2023-12-02 19:31:13,454 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound1.c [2023-12-02 19:31:13,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:31:13,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:31:13,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:31:13,527 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;@10533965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:31:13,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:31:13,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 19:31:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 19:31:13,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:13,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 19:31:13,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:31:13,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:13,547 INFO L85 PathProgramCache]: Analyzing trace with hash -808944537, now seen corresponding path program 1 times [2023-12-02 19:31:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152975104] [2023-12-02 19:31:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:13,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:13,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152975104] [2023-12-02 19:31:13,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:31:13,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768075958] [2023-12-02 19:31:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:13,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:13,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:13,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:13,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:31:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:13,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 19:31:13,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:31:13,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:31:13,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768075958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:31:13,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:31:13,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:31:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857988573] [2023-12-02 19:31:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:13,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:31:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:13,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:31:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:31:13,839 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:31:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:13,873 INFO L93 Difference]: Finished difference Result 47 states and 78 transitions. [2023-12-02 19:31:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:31:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 19:31:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:13,885 INFO L225 Difference]: With dead ends: 47 [2023-12-02 19:31:13,885 INFO L226 Difference]: Without dead ends: 22 [2023-12-02 19:31:13,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:31:13,894 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:13,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:31:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-02 19:31:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-02 19:31:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:31:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2023-12-02 19:31:13,941 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 6 [2023-12-02 19:31:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:13,942 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2023-12-02 19:31:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:31:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2023-12-02 19:31:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 19:31:13,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:13,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:31:13,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:31:14,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 19:31:14,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:31:14,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash -454731162, now seen corresponding path program 1 times [2023-12-02 19:31:14,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:14,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120862255] [2023-12-02 19:31:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:14,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120862255] [2023-12-02 19:31:14,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 19:31:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82436700] [2023-12-02 19:31:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:14,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:14,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:14,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:31:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:14,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:31:14,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:31:14,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:31:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82436700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:31:14,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:31:14,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:31:14,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984612580] [2023-12-02 19:31:14,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:31:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:31:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:31:14,300 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:31:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:14,324 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2023-12-02 19:31:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:31:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 19:31:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:14,326 INFO L225 Difference]: With dead ends: 31 [2023-12-02 19:31:14,327 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 19:31:14,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:31:14,329 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:14,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:31:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 19:31:14,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-02 19:31:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:31:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2023-12-02 19:31:14,339 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 7 [2023-12-02 19:31:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:14,340 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2023-12-02 19:31:14,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:31:14,340 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2023-12-02 19:31:14,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 19:31:14,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:14,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:31:14,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:31:14,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:14,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:31:14,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash -453241612, now seen corresponding path program 1 times [2023-12-02 19:31:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:14,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810311258] [2023-12-02 19:31:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:14,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:14,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:14,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349451467] [2023-12-02 19:31:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:14,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:14,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:14,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:14,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:31:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:14,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:31:14,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:31:14,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:31:14,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810311258] [2023-12-02 19:31:14,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349451467] [2023-12-02 19:31:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349451467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:31:14,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:31:14,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:31:14,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067956961] [2023-12-02 19:31:14,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:14,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:31:14,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:14,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:31:14,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:31:14,724 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:31:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:14,790 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2023-12-02 19:31:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:31:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 19:31:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:14,792 INFO L225 Difference]: With dead ends: 34 [2023-12-02 19:31:14,792 INFO L226 Difference]: Without dead ends: 32 [2023-12-02 19:31:14,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:31:14,795 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:14,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 90 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:31:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-02 19:31:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-12-02 19:31:14,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 19:31:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-12-02 19:31:14,807 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 7 [2023-12-02 19:31:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:14,808 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-12-02 19:31:14,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:31:14,808 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-12-02 19:31:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:31:14,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:14,809 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:31:14,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:31:15,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:15,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:31:15,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1361024088, now seen corresponding path program 1 times [2023-12-02 19:31:15,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:15,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144384511] [2023-12-02 19:31:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:15,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:15,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003984828] [2023-12-02 19:31:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:15,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:15,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:15,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:15,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:31:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:15,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 19:31:15,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:31:15,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:31:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:31:15,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:15,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144384511] [2023-12-02 19:31:15,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:15,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003984828] [2023-12-02 19:31:15,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003984828] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 19:31:15,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:31:15,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-12-02 19:31:15,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706037284] [2023-12-02 19:31:15,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:15,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:31:15,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:31:15,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:31:15,294 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:31:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:15,376 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2023-12-02 19:31:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:31:15,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 19:31:15,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:15,379 INFO L225 Difference]: With dead ends: 47 [2023-12-02 19:31:15,379 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 19:31:15,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:31:15,381 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:15,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 110 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:31:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 19:31:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-12-02 19:31:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 19:31:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2023-12-02 19:31:15,394 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 12 [2023-12-02 19:31:15,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:15,395 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2023-12-02 19:31:15,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:31:15,395 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2023-12-02 19:31:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:31:15,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:15,396 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:31:15,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:31:15,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:15,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:31:15,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1768978799, now seen corresponding path program 1 times [2023-12-02 19:31:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:15,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927013713] [2023-12-02 19:31:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:15,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823134941] [2023-12-02 19:31:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:15,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:15,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:15,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:15,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:31:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:15,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:31:15,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:15,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:31:15,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:15,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927013713] [2023-12-02 19:31:15,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:15,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823134941] [2023-12-02 19:31:15,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823134941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:31:15,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:31:15,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:31:15,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192587634] [2023-12-02 19:31:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:15,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:31:15,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:15,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:31:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:31:15,707 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-12-02 19:31:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:15,728 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2023-12-02 19:31:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:31:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 20 [2023-12-02 19:31:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:15,729 INFO L225 Difference]: With dead ends: 64 [2023-12-02 19:31:15,730 INFO L226 Difference]: Without dead ends: 31 [2023-12-02 19:31:15,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:31:15,731 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:15,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:31:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-02 19:31:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-12-02 19:31:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2023-12-02 19:31:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-02 19:31:15,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 20 [2023-12-02 19:31:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:15,739 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-02 19:31:15,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-12-02 19:31:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-02 19:31:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 19:31:15,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:31:15,741 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:31:15,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 19:31:15,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:15,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:31:15,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:31:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash -743859644, now seen corresponding path program 1 times [2023-12-02 19:31:15,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:31:15,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718710587] [2023-12-02 19:31:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:15,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:31:15,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:31:15,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773650192] [2023-12-02 19:31:15,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:31:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:31:15,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:31:15,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 19:31:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:31:16,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 19:31:16,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:31:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:31:16,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:31:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:31:16,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:31:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718710587] [2023-12-02 19:31:16,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:31:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773650192] [2023-12-02 19:31:16,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773650192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:31:16,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2061841323] [2023-12-02 19:31:16,337 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-12-02 19:31:16,337 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:31:16,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:31:16,344 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:31:16,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:31:17,152 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2023-12-02 19:31:17,197 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:31:18,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2061841323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:31:18,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:31:18,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 7] total 21 [2023-12-02 19:31:18,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278194709] [2023-12-02 19:31:18,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:18,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:31:18,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:31:18,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-12-02 19:31:18,756 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:31:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:31:18,934 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2023-12-02 19:31:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:31:18,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 1 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 23 [2023-12-02 19:31:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:31:18,935 INFO L225 Difference]: With dead ends: 30 [2023-12-02 19:31:18,935 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:31:18,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-12-02 19:31:18,936 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:31:18,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:31:18,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:31:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:31:18,938 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) [2023-12-02 19:31:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:31:18,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2023-12-02 19:31:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:31:18,939 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:31:18,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:31:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:31:18,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:31:18,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:31:18,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 19:31:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:31:19,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:31:19,541 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: false [2023-12-02 19:31:19,541 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-12-02 19:31:19,541 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-12-02 19:31:19,542 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse11 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 |#StackHeapBarrier|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 2147483647)) (.cse3 (= 2 (select |#length| 1))) (.cse4 (= (select |#valid| 3) 1)) (.cse5 (= (select |#valid| 1) 1)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= 14 (select |#length| 2))) (.cse8 (= (select |#valid| 2) 1)) (.cse9 (= (select .cse11 0) 48)) (.cse10 (= (select .cse11 1) 0))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) .cse2 .cse3 .cse4 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 0) .cse5 (= |ULTIMATE.start_main_~a~0#1| 0) .cse6 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~y~0#1| 2147483647) .cse10) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse5 .cse6 .cse7 .cse8 .cse9 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse10 (= ~counter~0 2))))) [2023-12-02 19:31:19,542 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (let ((.cse0 (select |#memory_int| 1))) (and (= ~counter~0 3) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~a~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (= (select .cse0 1) 0)))) [2023-12-02 19:31:19,542 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:31:19,542 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: false [2023-12-02 19:31:19,542 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-12-02 19:31:19,543 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-12-02 19:31:19,543 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= ~counter~0 1) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|) (= (select .cse0 1) 0))) [2023-12-02 19:31:19,543 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-12-02 19:31:19,543 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:31:19,543 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= ~counter~0 1) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))) [2023-12-02 19:31:19,544 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= ~counter~0 1) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))) [2023-12-02 19:31:19,544 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-12-02 19:31:19,544 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: false [2023-12-02 19:31:19,544 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: false [2023-12-02 19:31:19,544 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-12-02 19:31:19,544 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-12-02 19:31:19,544 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-12-02 19:31:19,545 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-12-02 19:31:19,545 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-12-02 19:31:19,545 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-12-02 19:31:19,545 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-12-02 19:31:19,548 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-02 19:31:19,551 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:31:19,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:31:19,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:31:19,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:31:19,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:31:19,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:31:19,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:31:19,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:31:19,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:31:19,569 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:31:19,571 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:31:19,571 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:31:19,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:31:19,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:31:19,573 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:31:19,573 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:31:19,573 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:31:19,573 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:31:19,574 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:31:19,574 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 19:31:19,574 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 19:31:19,575 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 19:31:19,575 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 19:31:19,575 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 19:31:19,576 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 19:31:19,576 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 19:31:19,576 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 19:31:19,576 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 19:31:19,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:31:19 BoogieIcfgContainer [2023-12-02 19:31:19,577 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:31:19,578 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:31:19,578 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:31:19,578 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:31:19,579 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:31:13" (3/4) ... [2023-12-02 19:31:19,581 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:31:19,584 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-12-02 19:31:19,589 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-12-02 19:31:19,590 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-12-02 19:31:19,590 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 19:31:19,590 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:31:19,689 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:31:19,689 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:31:19,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:31:19,691 INFO L158 Benchmark]: Toolchain (without parser) took 6928.26ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 143.8MB in the beginning and 129.8MB in the end (delta: 14.0MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2023-12-02 19:31:19,691 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 182.5MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:31:19,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.47ms. Allocated memory is still 182.5MB. Free memory was 143.8MB in the beginning and 132.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 19:31:19,692 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.33ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 131.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:31:19,693 INFO L158 Benchmark]: Boogie Preprocessor took 25.68ms. Allocated memory is still 182.5MB. Free memory was 131.2MB in the beginning and 130.4MB in the end (delta: 830.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:31:19,693 INFO L158 Benchmark]: RCFGBuilder took 331.29ms. Allocated memory is still 182.5MB. Free memory was 130.4MB in the beginning and 116.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 19:31:19,694 INFO L158 Benchmark]: TraceAbstraction took 6129.86ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 115.9MB in the beginning and 134.0MB in the end (delta: -18.1MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2023-12-02 19:31:19,694 INFO L158 Benchmark]: Witness Printer took 112.01ms. Allocated memory is still 220.2MB. Free memory was 134.0MB in the beginning and 129.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:31:19,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 182.5MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.47ms. Allocated memory is still 182.5MB. Free memory was 143.8MB in the beginning and 132.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.33ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 131.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.68ms. Allocated memory is still 182.5MB. Free memory was 131.2MB in the beginning and 130.4MB in the end (delta: 830.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 331.29ms. Allocated memory is still 182.5MB. Free memory was 130.4MB in the beginning and 116.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6129.86ms. Allocated memory was 182.5MB in the beginning and 220.2MB in the end (delta: 37.7MB). Free memory was 115.9MB in the beginning and 134.0MB in the end (delta: -18.1MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Witness Printer took 112.01ms. Allocated memory is still 220.2MB. Free memory was 134.0MB in the beginning and 129.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * 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: 17]: 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 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 354 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 226 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 128 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, InterpolantAutomatonStates: 33, 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, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 35 PreInvPairs, 43 NumberOfFragments, 495 HoareAnnotationTreeSize, 35 FomulaSimplifications, 236 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 573 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 431 SizeOfPredicates, 18 NumberOfNonLiveVariables, 370 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 23/32 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: OVERALL_TIME: 0.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 23, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 9, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 38, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 52, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 11, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.1s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 258, DAG_COMPRESSION_RETAINED_NODES: 60, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((1 <= y) && (x <= 2147483647)) && (b == y)) && (a == 1)) && (r == x)) && (q == 0)) && (counter == 1)) && (y <= r)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((1 <= y) && (b == 0)) && (x <= 2147483647)) && (0 <= (x + 2147483648))) && (r == x)) && (q == 0)) && (counter == 0)) && (a == 0)) && (y <= 2147483647)) || ((((((((x <= 2147483647) && (b == y)) && (a == 1)) && (y <= x)) && (1 <= b)) && (q == 1)) && ((b + r) == x)) && (counter == 2))) RESULT: Ultimate proved your program to be correct! [2023-12-02 19:31:19,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d1f8e4-a84f-4c5a-ac7d-e5cbe14bc689/bin/utaipan-verify-nQ1chXbOIh/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