./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:59:16,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:59:16,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:59:16,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:59:16,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:59:16,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:59:16,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:59:16,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:59:16,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:59:16,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:59:16,608 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:59:16,608 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:59:16,609 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:59:16,611 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:59:16,611 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:59:16,612 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:59:16,612 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:59:16,613 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:59:16,613 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:59:16,614 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:59:16,614 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:59:16,615 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:59:16,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:59:16,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:59:16,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:59:16,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:59:16,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:59:16,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:59:16,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:59:16,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:59:16,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:59:16,619 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:59:16,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:59:16,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:59:16,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:59:16,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:59:16,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:16,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:59:16,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:59:16,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:59:16,622 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:59:16,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:59:16,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:59:16,622 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:59:16,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:59:16,623 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_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 [2023-11-06 20:59:16,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:59:16,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:59:16,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:59:16,925 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:59:16,926 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:59:16,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-regression/rule60_list2.i [2023-11-06 20:59:20,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:59:20,482 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:59:20,482 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/sv-benchmarks/c/ldv-regression/rule60_list2.i [2023-11-06 20:59:20,503 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/data/2266066b4/8f8b140949f54b5b96d64d016a441068/FLAG921c3a1a0 [2023-11-06 20:59:20,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/data/2266066b4/8f8b140949f54b5b96d64d016a441068 [2023-11-06 20:59:20,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:59:20,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:59:20,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:20,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:59:20,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:59:20,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:20,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4402a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20, skipping insertion in model container [2023-11-06 20:59:20,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:20,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:20,736 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_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2023-11-06 20:59:20,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:20,883 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:59:20,896 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_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/sv-benchmarks/c/ldv-regression/rule60_list2.i[292,305] [2023-11-06 20:59:20,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:20,964 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:59:20,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20 WrapperNode [2023-11-06 20:59:20,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:20,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:20,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:59:20,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:59:20,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:20,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,017 INFO L138 Inliner]: procedures = 126, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-06 20:59:21,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:21,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:59:21,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:59:21,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:59:21,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:59:21,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:59:21,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:59:21,067 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:59:21,068 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (1/1) ... [2023-11-06 20:59:21,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:21,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:21,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:59:21,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:59:21,157 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2023-11-06 20:59:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2023-11-06 20:59:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:59:21,158 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-06 20:59:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-06 20:59:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 20:59:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2023-11-06 20:59:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2023-11-06 20:59:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:59:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:59:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:59:21,281 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:59:21,290 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:59:21,463 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:59:21,545 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:59:21,545 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:59:21,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:21 BoogieIcfgContainer [2023-11-06 20:59:21,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:59:21,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:59:21,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:59:21,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:59:21,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:59:20" (1/3) ... [2023-11-06 20:59:21,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a78827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:21, skipping insertion in model container [2023-11-06 20:59:21,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:20" (2/3) ... [2023-11-06 20:59:21,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a78827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:21, skipping insertion in model container [2023-11-06 20:59:21,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:21" (3/3) ... [2023-11-06 20:59:21,559 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2023-11-06 20:59:21,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:59:21,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:59:21,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:59:21,635 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=LoopsAndPotentialCycles, 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;@7dac6407, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:59:21,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 20:59:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-06 20:59:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:59:21,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:21,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 20:59:21,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:21,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1054325285, now seen corresponding path program 1 times [2023-11-06 20:59:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227270251] [2023-11-06 20:59:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:21,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:21,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:21,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227270251] [2023-11-06 20:59:21,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227270251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:21,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:21,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:59:21,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27528701] [2023-11-06 20:59:21,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:22,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:22,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:22,015 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:22,148 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2023-11-06 20:59:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:59:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 20:59:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:22,160 INFO L225 Difference]: With dead ends: 46 [2023-11-06 20:59:22,160 INFO L226 Difference]: Without dead ends: 21 [2023-11-06 20:59:22,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:59:22,175 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:22,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 49 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-06 20:59:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-06 20:59:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 20:59:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-06 20:59:22,233 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2023-11-06 20:59:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-06 20:59:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:59:22,235 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-06 20:59:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 20:59:22,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:22,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:22,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:59:22,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:22,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1738924518, now seen corresponding path program 1 times [2023-11-06 20:59:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:22,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304488182] [2023-11-06 20:59:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:22,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 20:59:22,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:22,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304488182] [2023-11-06 20:59:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304488182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:22,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:22,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 20:59:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790998998] [2023-11-06 20:59:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:22,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:59:22,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:59:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:59:22,755 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 20:59:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:22,929 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-11-06 20:59:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:59:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-06 20:59:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:22,932 INFO L225 Difference]: With dead ends: 27 [2023-11-06 20:59:22,933 INFO L226 Difference]: Without dead ends: 24 [2023-11-06 20:59:22,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 20:59:22,943 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:22,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 52 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-06 20:59:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-11-06 20:59:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 20:59:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-06 20:59:22,954 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2023-11-06 20:59:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:22,955 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-06 20:59:22,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 20:59:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-06 20:59:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 20:59:22,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:22,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:22,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:59:22,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:22,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1398237025, now seen corresponding path program 1 times [2023-11-06 20:59:22,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:22,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705319298] [2023-11-06 20:59:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:22,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:23,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:23,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705319298] [2023-11-06 20:59:23,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705319298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:59:23,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382320278] [2023-11-06 20:59:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:23,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:59:23,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:23,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:59:23,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 20:59:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:24,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 76 conjunts are in the unsatisfiable core [2023-11-06 20:59:24,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:59:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 20:59:25,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 20:59:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382320278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 20:59:27,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [10229222] [2023-11-06 20:59:27,171 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-06 20:59:27,171 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 20:59:27,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 20:59:27,184 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 20:59:27,185 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 20:59:29,335 INFO L197 IcfgInterpreter]: Interpreting procedure list_add with input of size 14 for LOIs [2023-11-06 20:59:29,365 INFO L197 IcfgInterpreter]: Interpreting procedure __blast_assert with input of size 10 for LOIs [2023-11-06 20:59:29,368 INFO L197 IcfgInterpreter]: Interpreting procedure my_malloc with input of size 95 for LOIs [2023-11-06 20:59:29,672 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 20:59:34,573 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '403#(and (<= 1 |#StackHeapBarrier|) (= |~#head~0.offset| 0) (= 4 |~#head~0.base|))' at error location [2023-11-06 20:59:34,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 20:59:34,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 20:59:34,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 45 [2023-11-06 20:59:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981361427] [2023-11-06 20:59:34,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 20:59:34,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-06 20:59:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-06 20:59:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=3275, Unknown=0, NotChecked=0, Total=3540 [2023-11-06 20:59:34,580 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 46 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 31 states have internal predecessors, (43), 13 states have call successors, (13), 12 states have call predecessors, (13), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-06 20:59:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:35,710 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-11-06 20:59:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 20:59:35,711 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 31 states have internal predecessors, (43), 13 states have call successors, (13), 12 states have call predecessors, (13), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 24 [2023-11-06 20:59:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:35,712 INFO L225 Difference]: With dead ends: 33 [2023-11-06 20:59:35,712 INFO L226 Difference]: Without dead ends: 29 [2023-11-06 20:59:35,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=505, Invalid=5195, Unknown=0, NotChecked=0, Total=5700 [2023-11-06 20:59:35,717 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 62 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:35,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 21 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 20:59:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-06 20:59:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2023-11-06 20:59:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-06 20:59:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-06 20:59:35,725 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 24 [2023-11-06 20:59:35,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:35,725 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-06 20:59:35,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 31 states have internal predecessors, (43), 13 states have call successors, (13), 12 states have call predecessors, (13), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-06 20:59:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-06 20:59:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 20:59:35,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:35,727 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:35,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 20:59:35,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:59:35,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:35,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1199616050, now seen corresponding path program 1 times [2023-11-06 20:59:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:35,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539804135] [2023-11-06 20:59:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:35,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 20:59:36,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:36,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539804135] [2023-11-06 20:59:36,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539804135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:36,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:36,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 20:59:36,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499982718] [2023-11-06 20:59:36,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:36,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:59:36,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:36,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:59:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:59:36,134 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 20:59:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:36,195 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-11-06 20:59:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:59:36,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-11-06 20:59:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:36,195 INFO L225 Difference]: With dead ends: 23 [2023-11-06 20:59:36,196 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 20:59:36,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 20:59:36,197 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:36,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 62 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:59:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 20:59:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 20:59:36,199 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) [2023-11-06 20:59:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 20:59:36,199 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2023-11-06 20:59:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:36,199 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 20:59:36,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 20:59:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 20:59:36,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 20:59:36,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 20:59:36,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:59:36,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 20:59:36,418 INFO L899 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2023-11-06 20:59:36,418 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 528 530) the Hoare annotation is: (or (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (not (= |my_malloc_#in~size#1| 8)) (< |old(~guard_malloc_counter~0.offset)| 0) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2023-11-06 20:59:36,419 INFO L895 garLoopResultBuilder]: At program point L522-2(line 522) the Hoare annotation is: (or (not (= |my_malloc_#in~size#1| 8)) (< |old(~guard_malloc_counter~0.offset)| 0) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2023-11-06 20:59:36,419 INFO L895 garLoopResultBuilder]: At program point L522-3(line 522) the Hoare annotation is: (or (not (= |my_malloc_#in~size#1| 8)) (< |old(~guard_malloc_counter~0.offset)| 0) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |my_malloc___getMemory_~size#1| 8)) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2023-11-06 20:59:36,419 INFO L899 garLoopResultBuilder]: For program point my_mallocEXIT(lines 528 530) no Hoare annotation was computed. [2023-11-06 20:59:36,419 INFO L899 garLoopResultBuilder]: For program point L536(line 536) no Hoare annotation was computed. [2023-11-06 20:59:36,419 INFO L895 garLoopResultBuilder]: At program point L536-2(line 536) the Hoare annotation is: (and (= |old(~elem~0.base)| |list_add_#in~new.base|) (= |old(~elem~0.offset)| |list_add_#in~new.offset|)) [2023-11-06 20:59:36,419 INFO L899 garLoopResultBuilder]: For program point L536-3(line 536) no Hoare annotation was computed. [2023-11-06 20:59:36,419 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 535 539) the Hoare annotation is: (or (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (and (= |old(~elem~0.base)| |list_add_#in~new.base|) (= |old(~elem~0.offset)| |list_add_#in~new.offset|))) [2023-11-06 20:59:36,419 INFO L899 garLoopResultBuilder]: For program point list_addEXIT(lines 535 539) no Hoare annotation was computed. [2023-11-06 20:59:36,420 INFO L899 garLoopResultBuilder]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2023-11-06 20:59:36,420 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 4 7) the Hoare annotation is: true [2023-11-06 20:59:36,420 INFO L899 garLoopResultBuilder]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2023-11-06 20:59:36,420 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 20:59:36,420 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 20:59:36,420 INFO L895 garLoopResultBuilder]: At program point L550(line 550) the Hoare annotation is: (and (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) |ULTIMATE.start_main_~dev2~0#1.offset|) (= ~elem~0.offset 0) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (= ~elem~0.base 0) (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset)) [2023-11-06 20:59:36,420 INFO L895 garLoopResultBuilder]: At program point L550-1(line 550) the Hoare annotation is: (and (not (= |ULTIMATE.start_main_~dev1~0#1.offset| |ULTIMATE.start_main_~dev2~0#1.offset|)) (or (and (= ~elem~0.offset 0) (= ~elem~0.base 0)) (< |ULTIMATE.start_main_~dev1~0#1.offset| ~elem~0.offset)) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (or (not (= |ULTIMATE.start_main_~dev2~0#1.base| 0)) (not (= 0 |ULTIMATE.start_main_~dev2~0#1.offset|))) (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset)) [2023-11-06 20:59:36,420 INFO L895 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: (and (= ~elem~0.offset 0) (<= 1 ~guard_malloc_counter~0.offset) (= ~elem~0.base 0) (or (and (= |ULTIMATE.start_main_~dev1~0#1.base| 0) (= |ULTIMATE.start_main_~dev1~0#1.offset| 0)) (= ~guard_malloc_counter~0.offset |ULTIMATE.start_main_~dev1~0#1.offset|))) [2023-11-06 20:59:36,421 INFO L899 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2023-11-06 20:59:36,421 INFO L895 garLoopResultBuilder]: At program point L553(line 553) the Hoare annotation is: (and (or (not (= |ULTIMATE.start_main_~dev2~0#1.base| 0)) (not (= 0 |ULTIMATE.start_main_~dev2~0#1.offset|))) (or (not (= ~elem~0.base |ULTIMATE.start_main_~dev2~0#1.base|)) (not (= ~elem~0.offset |ULTIMATE.start_main_~dev2~0#1.offset|)))) [2023-11-06 20:59:36,421 INFO L899 garLoopResultBuilder]: For program point L551(line 551) no Hoare annotation was computed. [2023-11-06 20:59:36,421 INFO L899 garLoopResultBuilder]: For program point L549(lines 549 554) no Hoare annotation was computed. [2023-11-06 20:59:36,421 INFO L902 garLoopResultBuilder]: At program point L549-1(lines 549 554) the Hoare annotation is: true [2023-11-06 20:59:36,421 INFO L895 garLoopResultBuilder]: At program point L547(line 547) the Hoare annotation is: (and (= ~guard_malloc_counter~0.offset 0) (= ~elem~0.offset 0) (= ~elem~0.base 0)) [2023-11-06 20:59:36,421 INFO L899 garLoopResultBuilder]: For program point L547-1(line 547) no Hoare annotation was computed. [2023-11-06 20:59:36,425 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 20:59:36,427 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:59:36,438 ERROR L462 ceAbstractionStarter]: Failed to backtranslate (or (not (= |my_malloc_#in~size#1| 8)) (< |old(~guard_malloc_counter~0.offset)| 0) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |my_malloc___getMemory_~size#1| 8)) (not (= ~elem~0.base 0)) (not (= ~elem~0.offset 0))) [2023-11-06 20:59:36,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:59:36 BoogieIcfgContainer [2023-11-06 20:59:36,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:59:36,439 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:59:36,439 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:59:36,440 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:59:36,440 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:21" (3/4) ... [2023-11-06 20:59:36,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 20:59:36,446 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_malloc [2023-11-06 20:59:36,446 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure list_add [2023-11-06 20:59:36,446 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2023-11-06 20:59:36,452 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-06 20:59:36,452 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-06 20:59:36,452 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 20:59:36,453 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 20:59:36,514 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:59:36,515 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 20:59:36,515 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:59:36,515 INFO L158 Benchmark]: Toolchain (without parser) took 15992.73ms. Allocated memory was 190.8MB in the beginning and 526.4MB in the end (delta: 335.5MB). Free memory was 143.9MB in the beginning and 492.3MB in the end (delta: -348.4MB). Peak memory consumption was 265.5MB. Max. memory is 16.1GB. [2023-11-06 20:59:36,516 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory was 83.4MB in the beginning and 83.3MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:59:36,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.50ms. Allocated memory is still 190.8MB. Free memory was 143.9MB in the beginning and 127.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 20:59:36,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.04ms. Allocated memory is still 190.8MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:59:36,517 INFO L158 Benchmark]: Boogie Preprocessor took 47.58ms. Allocated memory is still 190.8MB. Free memory was 125.1MB in the beginning and 123.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:59:36,518 INFO L158 Benchmark]: RCFGBuilder took 481.83ms. Allocated memory is still 190.8MB. Free memory was 123.7MB in the beginning and 107.7MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 20:59:36,518 INFO L158 Benchmark]: TraceAbstraction took 14887.31ms. Allocated memory was 190.8MB in the beginning and 526.4MB in the end (delta: 335.5MB). Free memory was 106.9MB in the beginning and 221.1MB in the end (delta: -114.1MB). Peak memory consumption was 222.2MB. Max. memory is 16.1GB. [2023-11-06 20:59:36,518 INFO L158 Benchmark]: Witness Printer took 75.73ms. Allocated memory is still 526.4MB. Free memory was 221.1MB in the beginning and 492.3MB in the end (delta: -271.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-11-06 20:59:36,521 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory was 83.4MB in the beginning and 83.3MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.50ms. Allocated memory is still 190.8MB. Free memory was 143.9MB in the beginning and 127.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.04ms. Allocated memory is still 190.8MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.58ms. Allocated memory is still 190.8MB. Free memory was 125.1MB in the beginning and 123.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.83ms. Allocated memory is still 190.8MB. Free memory was 123.7MB in the beginning and 107.7MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14887.31ms. Allocated memory was 190.8MB in the beginning and 526.4MB in the end (delta: 335.5MB). Free memory was 106.9MB in the beginning and 221.1MB in the end (delta: -114.1MB). Peak memory consumption was 222.2MB. Max. memory is 16.1GB. * Witness Printer took 75.73ms. Allocated memory is still 526.4MB. Free memory was 221.1MB in the beginning and 492.3MB in the end (delta: -271.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: 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 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.8s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 184 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 632 IncrementalHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 55 mSDtfsCounter, 632 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 37, 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, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 32 PreInvPairs, 39 NumberOfFragments, 181 HoareAnnotationTreeSize, 32 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 255 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 1082 SizeOfPredicates, 15 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 26/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 549]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 522]: Loop Invariant Derived loop invariant: NULL RESULT: Ultimate proved your program to be correct! [2023-11-06 20:59:36,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d761efd3-7a8b-4f72-a3f8-2029a32aa65a/bin/utaipan-verify-FOvIYxoinp/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