./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/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_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/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_d737ef21-d163-44c8-88de-0135fb94c57c/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 fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:51:17,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:51:17,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:51:17,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:51:17,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:51:17,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:51:17,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:51:17,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:51:17,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:51:17,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:51:17,649 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:51:17,650 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:51:17,651 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:51:17,651 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:51:17,652 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:51:17,652 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:51:17,653 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:51:17,653 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:51:17,654 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:51:17,654 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:51:17,655 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:51:17,659 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:51:17,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:51:17,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:51:17,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:51:17,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:51:17,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:51:17,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:51:17,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:51:17,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:51:17,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:51:17,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:51:17,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:51:17,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:51:17,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:51:17,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:51:17,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:51:17,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:17,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:51:17,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:51:17,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:51:17,666 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:51:17,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:51:17,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:51:17,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:51:17,667 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:51:17,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:51:17,667 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_d737ef21-d163-44c8-88de-0135fb94c57c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2023-12-02 12:51:17,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:51:17,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:51:17,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:51:17,924 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:51:17,925 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:51:17,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2023-12-02 12:51:20,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:51:20,863 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:51:20,864 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2023-12-02 12:51:20,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/data/3713da7fd/8b35531f3537436d96ac476b5b0ce228/FLAG93372467f [2023-12-02 12:51:20,895 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/data/3713da7fd/8b35531f3537436d96ac476b5b0ce228 [2023-12-02 12:51:20,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:51:20,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:51:20,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:20,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:51:20,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:51:20,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:20" (1/1) ... [2023-12-02 12:51:20,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b932bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:20, skipping insertion in model container [2023-12-02 12:51:20,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:20" (1/1) ... [2023-12-02 12:51:20,985 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:51:21,313 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_d737ef21-d163-44c8-88de-0135fb94c57c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i[33519,33532] [2023-12-02 12:51:21,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:21,393 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:51:21,425 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_d737ef21-d163-44c8-88de-0135fb94c57c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i[33519,33532] [2023-12-02 12:51:21,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:21,501 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:51:21,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21 WrapperNode [2023-12-02 12:51:21,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:21,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:21,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:51:21,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:51:21,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,582 INFO L138 Inliner]: procedures = 177, calls = 176, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 751 [2023-12-02 12:51:21,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:21,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:51:21,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:51:21,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:51:21,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,661 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:51:21,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:51:21,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:51:21,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:51:21,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (1/1) ... [2023-12-02 12:51:21,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:21,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:21,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:51:21,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:51:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:51:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:51:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 12:51:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 12:51:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:51:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:51:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:51:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:51:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:51:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:51:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:51:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:51:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:51:21,897 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:51:21,898 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:51:22,755 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:51:23,495 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:51:23,496 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-12-02 12:51:23,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:23 BoogieIcfgContainer [2023-12-02 12:51:23,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:51:23,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:51:23,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:51:23,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:51:23,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:51:20" (1/3) ... [2023-12-02 12:51:23,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe0ebef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:23, skipping insertion in model container [2023-12-02 12:51:23,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:21" (2/3) ... [2023-12-02 12:51:23,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe0ebef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:23, skipping insertion in model container [2023-12-02 12:51:23,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:23" (3/3) ... [2023-12-02 12:51:23,505 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test1-1.i [2023-12-02 12:51:23,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:51:23,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:51:23,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:51:23,564 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;@30d118d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:51:23,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:51:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 57 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:51:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 12:51:23,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:23,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 12:51:23,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:23,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash 762153636, now seen corresponding path program 1 times [2023-12-02 12:51:23,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964774621] [2023-12-02 12:51:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:23,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:23,725 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 12:51:23,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:23,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964774621] [2023-12-02 12:51:23,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964774621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:23,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:23,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:51:23,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746252278] [2023-12-02 12:51:23,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:23,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:51:23,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:51:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:51:23,762 INFO L87 Difference]: Start difference. First operand has 62 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 57 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 12:51:25,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:27,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:29,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:31,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:33,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:35,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:37,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 12:51:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:38,062 INFO L93 Difference]: Finished difference Result 175 states and 294 transitions. [2023-12-02 12:51:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:51:38,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2023-12-02 12:51:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:38,075 INFO L225 Difference]: With dead ends: 175 [2023-12-02 12:51:38,075 INFO L226 Difference]: Without dead ends: 112 [2023-12-02 12:51:38,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:51:38,081 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:38,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 114 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 6 Unknown, 0 Unchecked, 14.3s Time] [2023-12-02 12:51:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-02 12:51:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 61. [2023-12-02 12:51:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:51:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-12-02 12:51:38,124 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 5 [2023-12-02 12:51:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:38,124 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-12-02 12:51:38,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 12:51:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-12-02 12:51:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 12:51:38,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:38,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:38,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:51:38,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:38,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 795660270, now seen corresponding path program 1 times [2023-12-02 12:51:38,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:38,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102889403] [2023-12-02 12:51:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:38,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:51:38,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:38,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102889403] [2023-12-02 12:51:38,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102889403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:38,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:38,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:51:38,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604903553] [2023-12-02 12:51:38,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:38,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:51:38,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:51:38,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:51:38,475 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 12:51:40,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:42,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:44,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:46,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:48,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:50,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:51:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:51,585 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2023-12-02 12:51:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:51:51,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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) Word has length 32 [2023-12-02 12:51:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:51,591 INFO L225 Difference]: With dead ends: 134 [2023-12-02 12:51:51,591 INFO L226 Difference]: Without dead ends: 75 [2023-12-02 12:51:51,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:51:51,593 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:51,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 6 Unknown, 0 Unchecked, 13.1s Time] [2023-12-02 12:51:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-02 12:51:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-02 12:51:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 70 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:51:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2023-12-02 12:51:51,605 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 32 [2023-12-02 12:51:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:51,606 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2023-12-02 12:51:51,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 12:51:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2023-12-02 12:51:51,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 12:51:51,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:51,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:51,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:51:51,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:51,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 440600343, now seen corresponding path program 1 times [2023-12-02 12:51:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:51,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376982728] [2023-12-02 12:51:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 12:51:51,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376982728] [2023-12-02 12:51:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376982728] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:51:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571040986] [2023-12-02 12:51:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:51,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:51:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:51,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:51:51,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:51:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:52,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:51:52,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 12:51:52,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:51:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 12:51:52,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571040986] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:51:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1278387809] [2023-12-02 12:51:52,474 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 12:51:52,474 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:51:52,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:51:52,483 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:51:52,483 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:51:58,346 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 119 for LOIs [2023-12-02 12:51:58,401 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:52:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1278387809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:52:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:52:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2023-12-02 12:52:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799243620] [2023-12-02 12:52:06,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:52:06,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 12:52:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:52:06,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 12:52:06,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=229, Unknown=5, NotChecked=0, Total=342 [2023-12-02 12:52:06,766 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:52:08,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:10,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:12,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:14,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:16,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:18,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:21,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:23,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:25,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:27,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:29,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:31,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:33,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:35,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:39,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:52:41,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:43,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:45,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:47,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:52:49,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:51,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:53,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:52:55,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:52:57,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:52:59,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:01,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:03,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:05,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:07,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:09,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:11,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:13,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:15,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:17,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:19,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:21,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:23,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:25,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:27,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:29,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:53:32,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 12:53:35,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 12:53:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:35,248 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2023-12-02 12:53:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 12:53:35,257 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2023-12-02 12:53:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:35,258 INFO L225 Difference]: With dead ends: 153 [2023-12-02 12:53:35,258 INFO L226 Difference]: Without dead ends: 83 [2023-12-02 12:53:35,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=120, Invalid=255, Unknown=5, NotChecked=0, Total=380 [2023-12-02 12:53:35,259 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 9 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:35,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 222 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 47 Unknown, 0 Unchecked, 88.2s Time] [2023-12-02 12:53:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-02 12:53:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-12-02 12:53:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 12:53:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2023-12-02 12:53:35,275 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 45 [2023-12-02 12:53:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:53:35,276 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2023-12-02 12:53:35,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:53:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2023-12-02 12:53:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 12:53:35,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:35,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:53:35,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:53:35,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-02 12:53:35,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:53:35,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 445263443, now seen corresponding path program 1 times [2023-12-02 12:53:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955204768] [2023-12-02 12:53:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 12:53:35,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955204768] [2023-12-02 12:53:35,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955204768] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:53:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354242534] [2023-12-02 12:53:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:35,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:53:35,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:53:35,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:53:35,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:53:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:36,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:53:36,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:53:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 12:53:36,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:53:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 12:53:36,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354242534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:53:36,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1552321230] [2023-12-02 12:53:36,141 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 12:53:36,141 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:53:36,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:53:36,142 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:53:36,142 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:54:01,062 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 302 for LOIs [2023-12-02 12:54:03,623 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:55:22,267 WARN L293 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 312 DAG size of output: 309 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:57:20,515 WARN L293 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 326 DAG size of output: 323 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 12:59:07,910 WARN L293 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 346 DAG size of output: 340 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:00:08,801 WARN L293 SmtUtils]: Spent 12.24s on a formula simplification. DAG size of input: 302 DAG size of output: 288 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:01:31,133 WARN L293 SmtUtils]: Spent 17.23s on a formula simplification that was a NOOP. DAG size: 242 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:02:38,275 WARN L293 SmtUtils]: Spent 16.10s on a formula simplification that was a NOOP. DAG size: 218 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:02:40,289 WARN L854 $PredicateComparison]: unable to prove that (and (or (and (exists ((|v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_15| Int)) (and (<= 384 (mod |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_15| 4294967296)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_15|))) (exists ((|v_#memory_$Pointer$.offset_302| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_85| (Array Int (Array Int Int))) (|v_#memory_int_96| (Array Int (Array Int Int))) (|v_#memory_int_349| (Array Int (Array Int Int))) (|v_#valid_56| (Array Int Int)) (|v_#memory_int_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_87| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~malloc59#1.base_5| Int) (|v_#length_38| (Array Int Int)) (|v_#memory_$Pointer$.offset_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_85| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_31| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_87| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_302| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| (Array Int (Array Int Int)))) (let ((.cse16 (select (select |v_#memory_$Pointer$.base_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse17 (select (select |v_#memory_$Pointer$.offset_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse12 (select (select |v_#memory_$Pointer$.base_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse13 (+ 16 (select (select |v_#memory_$Pointer$.offset_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)))) (let ((.cse20 (store |v_#memory_$Pointer$.offset_302| .cse12 (store (select |v_#memory_$Pointer$.offset_302| .cse12) .cse13 8))) (.cse4 (store |v_#memory_$Pointer$.base_302| .cse12 (store (select |v_#memory_$Pointer$.base_302| .cse12) .cse13 |c_ULTIMATE.start_main_~user~0#1.base|))) (.cse7 (store |v_#memory_$Pointer$.offset_85| .cse16 (store (select |v_#memory_$Pointer$.offset_85| .cse16) .cse17 0))) (.cse14 (store |v_#memory_$Pointer$.base_87| .cse16 (store (select |v_#memory_$Pointer$.base_87| .cse16) .cse17 |v_ULTIMATE.start_main_#t~malloc59#1.base_5|)))) (let ((.cse8 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse9 (+ 40 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (.cse2 (select (select |v_#memory_$Pointer$.base_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse3 (+ (select (select |v_#memory_$Pointer$.offset_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 20)) (.cse10 (select (select |v_#memory_$Pointer$.base_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse11 (+ (select (select |v_#memory_$Pointer$.offset_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 8)) (.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse6 (+ (select (select .cse20 |c_ULTIMATE.start_main_~user~0#1.base|) 8) 4))) (and (not (= |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 0)) (let ((.cse0 (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_31| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse1 (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (or (not (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_31| .cse0) .cse1) 0)) (not (= (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| .cse0) .cse1) 0)))) (= (store |v_#memory_$Pointer$.offset_87| .cse2 (store (select |v_#memory_$Pointer$.offset_87| .cse2) .cse3 (select (select |v_#memory_$Pointer$.offset_85| .cse2) .cse3))) |v_#memory_$Pointer$.offset_85|) (= |c_#valid| (store |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1)) (= (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 (select (select |v_#memory_$Pointer$.base_85| .cse5) .cse6))) |v_#memory_$Pointer$.base_85|) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| .cse8) .cse9)))) (= (store |v_#memory_$Pointer$.base_86| .cse2 (store (select |v_#memory_$Pointer$.base_86| .cse2) .cse3 (select (select |v_#memory_$Pointer$.base_87| .cse2) .cse3))) |v_#memory_$Pointer$.base_87|) (= (store |v_#memory_$Pointer$.base_85| .cse10 (store (select |v_#memory_$Pointer$.base_85| .cse10) .cse11 (select (select |v_#memory_$Pointer$.base_86| .cse10) .cse11))) |v_#memory_$Pointer$.base_86|) (= (store |v_#memory_int_349| .cse12 (store (select |v_#memory_int_349| .cse12) .cse13 (select (select |v_#memory_int_97| .cse12) .cse13))) |v_#memory_int_97|) (= |v_#memory_$Pointer$.base_BEFORE_CALL_31| (store .cse14 .cse8 (store (select .cse14 .cse8) .cse9 (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_31| .cse8) .cse9)))) (= (store |v_#length_38| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 384) |c_#length|) (= (select |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5|) 0) (= (let ((.cse15 (let ((.cse18 (let ((.cse19 (store |v_#memory_int_97| .cse5 (store (select |v_#memory_int_97| .cse5) .cse6 32)))) (store .cse19 .cse10 (store (select .cse19 .cse10) .cse11 5))))) (store .cse18 .cse2 (store (select .cse18 .cse2) .cse3 8))))) (store .cse15 .cse16 (store (select .cse15 .cse16) .cse17 (select (select |v_#memory_int_96| .cse16) .cse17)))) |v_#memory_int_96|) (<= (+ |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1) |c_#StackHeapBarrier|) (= |v_#memory_$Pointer$.offset_87| (store |v_#memory_$Pointer$.offset_86| .cse10 (store (select |v_#memory_$Pointer$.offset_86| .cse10) .cse11 (select (select |v_#memory_$Pointer$.offset_87| .cse10) .cse11)))) (= |v_#memory_$Pointer$.offset_86| (store .cse20 .cse5 (store (select .cse20 .cse5) .cse6 (select (select |v_#memory_$Pointer$.offset_86| .cse5) .cse6)))))))))) (and (exists ((|v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_16| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_16|) (<= 384 (mod |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_16| 4294967296)))) (exists ((|v_#memory_$Pointer$.offset_302| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_85| (Array Int (Array Int Int))) (|v_#memory_int_96| (Array Int (Array Int Int))) (|v_#memory_int_349| (Array Int (Array Int Int))) (|v_#valid_56| (Array Int Int)) (|v_#memory_int_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_87| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~malloc59#1.base_5| Int) (|v_#length_38| (Array Int Int)) (|v_#memory_$Pointer$.offset_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_85| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_87| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_20| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_302| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_BEFORE_CALL_33| (Array Int (Array Int Int)))) (let ((.cse37 (select (select |v_#memory_$Pointer$.base_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse38 (select (select |v_#memory_$Pointer$.offset_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse33 (select (select |v_#memory_$Pointer$.base_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse34 (+ 16 (select (select |v_#memory_$Pointer$.offset_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)))) (let ((.cse41 (store |v_#memory_$Pointer$.offset_302| .cse33 (store (select |v_#memory_$Pointer$.offset_302| .cse33) .cse34 8))) (.cse28 (store |v_#memory_$Pointer$.base_302| .cse33 (store (select |v_#memory_$Pointer$.base_302| .cse33) .cse34 |c_ULTIMATE.start_main_~user~0#1.base|))) (.cse23 (store |v_#memory_$Pointer$.offset_85| .cse37 (store (select |v_#memory_$Pointer$.offset_85| .cse37) .cse38 0))) (.cse35 (store |v_#memory_$Pointer$.base_87| .cse37 (store (select |v_#memory_$Pointer$.base_87| .cse37) .cse38 |v_ULTIMATE.start_main_#t~malloc59#1.base_5|)))) (let ((.cse24 (select (select .cse35 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse25 (+ 40 (select (select .cse23 |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (.cse26 (select (select |v_#memory_$Pointer$.base_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse27 (+ (select (select |v_#memory_$Pointer$.offset_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 20)) (.cse31 (select (select |v_#memory_$Pointer$.base_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse32 (+ (select (select |v_#memory_$Pointer$.offset_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 8)) (.cse29 (select (select .cse28 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse30 (+ (select (select .cse41 |c_ULTIMATE.start_main_~user~0#1.base|) 8) 4))) (and (not (= |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 0)) (let ((.cse21 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse22 (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_33| |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (or (not (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_33| .cse21) .cse22) 0)) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| .cse21) .cse22) 0)))) (= (store .cse23 .cse24 (store (select .cse23 .cse24) .cse25 (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_33| .cse24) .cse25))) |v_#memory_$Pointer$.offset_BEFORE_CALL_33|) (= (store |v_#memory_$Pointer$.offset_87| .cse26 (store (select |v_#memory_$Pointer$.offset_87| .cse26) .cse27 (select (select |v_#memory_$Pointer$.offset_85| .cse26) .cse27))) |v_#memory_$Pointer$.offset_85|) (= |c_#valid| (store |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1)) (= (store .cse28 .cse29 (store (select .cse28 .cse29) .cse30 (select (select |v_#memory_$Pointer$.base_85| .cse29) .cse30))) |v_#memory_$Pointer$.base_85|) (= (store |v_#memory_$Pointer$.base_86| .cse26 (store (select |v_#memory_$Pointer$.base_86| .cse26) .cse27 (select (select |v_#memory_$Pointer$.base_87| .cse26) .cse27))) |v_#memory_$Pointer$.base_87|) (= (store |v_#memory_$Pointer$.base_85| .cse31 (store (select |v_#memory_$Pointer$.base_85| .cse31) .cse32 (select (select |v_#memory_$Pointer$.base_86| .cse31) .cse32))) |v_#memory_$Pointer$.base_86|) (= (store |v_#memory_int_349| .cse33 (store (select |v_#memory_int_349| .cse33) .cse34 (select (select |v_#memory_int_97| .cse33) .cse34))) |v_#memory_int_97|) (= (store |v_#length_38| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 384) |c_#length|) (= (select |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5|) 0) (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| (store .cse35 .cse24 (store (select .cse35 .cse24) .cse25 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| .cse24) .cse25)))) (= (let ((.cse36 (let ((.cse39 (let ((.cse40 (store |v_#memory_int_97| .cse29 (store (select |v_#memory_int_97| .cse29) .cse30 32)))) (store .cse40 .cse31 (store (select .cse40 .cse31) .cse32 5))))) (store .cse39 .cse26 (store (select .cse39 .cse26) .cse27 8))))) (store .cse36 .cse37 (store (select .cse36 .cse37) .cse38 (select (select |v_#memory_int_96| .cse37) .cse38)))) |v_#memory_int_96|) (<= (+ |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1) |c_#StackHeapBarrier|) (= |v_#memory_$Pointer$.offset_87| (store |v_#memory_$Pointer$.offset_86| .cse31 (store (select |v_#memory_$Pointer$.offset_86| .cse31) .cse32 (select (select |v_#memory_$Pointer$.offset_87| .cse31) .cse32)))) (= |v_#memory_$Pointer$.offset_86| (store .cse41 .cse29 (store (select .cse41 .cse29) .cse30 (select (select |v_#memory_$Pointer$.offset_86| .cse29) .cse30))))))))))) (<= |c_ULTIMATE.start_main_~i~0#1| 9) (= |c_ULTIMATE.start_main_~user~0#1.offset| 0) (= |c_ULTIMATE.start_main_~users~0#1.offset| 0) (= |c_ULTIMATE.start_main_~users~0#1.base| |c_ULTIMATE.start_main_~user~0#1.base|)) is different from false [2023-12-02 13:02:42,304 WARN L854 $PredicateComparison]: unable to prove that (and (or (and (exists ((|v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_15| Int)) (and (<= 384 (mod |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_15| 4294967296)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_15|))) (exists ((|v_#memory_$Pointer$.offset_302| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_85| (Array Int (Array Int Int))) (|v_#memory_int_96| (Array Int (Array Int Int))) (|v_#memory_int_349| (Array Int (Array Int Int))) (|v_#valid_56| (Array Int Int)) (|v_#memory_int_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_87| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~malloc59#1.base_5| Int) (|v_#length_38| (Array Int Int)) (|v_#memory_$Pointer$.offset_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_85| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_BEFORE_CALL_31| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_87| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_302| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| (Array Int (Array Int Int)))) (let ((.cse16 (select (select |v_#memory_$Pointer$.base_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse17 (select (select |v_#memory_$Pointer$.offset_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse12 (select (select |v_#memory_$Pointer$.base_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse13 (+ 16 (select (select |v_#memory_$Pointer$.offset_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)))) (let ((.cse20 (store |v_#memory_$Pointer$.offset_302| .cse12 (store (select |v_#memory_$Pointer$.offset_302| .cse12) .cse13 8))) (.cse4 (store |v_#memory_$Pointer$.base_302| .cse12 (store (select |v_#memory_$Pointer$.base_302| .cse12) .cse13 |c_ULTIMATE.start_main_~user~0#1.base|))) (.cse7 (store |v_#memory_$Pointer$.offset_85| .cse16 (store (select |v_#memory_$Pointer$.offset_85| .cse16) .cse17 0))) (.cse14 (store |v_#memory_$Pointer$.base_87| .cse16 (store (select |v_#memory_$Pointer$.base_87| .cse16) .cse17 |v_ULTIMATE.start_main_#t~malloc59#1.base_5|)))) (let ((.cse8 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse9 (+ 40 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (.cse2 (select (select |v_#memory_$Pointer$.base_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse3 (+ (select (select |v_#memory_$Pointer$.offset_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 20)) (.cse10 (select (select |v_#memory_$Pointer$.base_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse11 (+ (select (select |v_#memory_$Pointer$.offset_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 8)) (.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse6 (+ (select (select .cse20 |c_ULTIMATE.start_main_~user~0#1.base|) 8) 4))) (and (not (= |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 0)) (let ((.cse0 (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_31| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse1 (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (or (not (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_31| .cse0) .cse1) 0)) (not (= (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| .cse0) .cse1) 0)))) (= (store |v_#memory_$Pointer$.offset_87| .cse2 (store (select |v_#memory_$Pointer$.offset_87| .cse2) .cse3 (select (select |v_#memory_$Pointer$.offset_85| .cse2) .cse3))) |v_#memory_$Pointer$.offset_85|) (= |c_#valid| (store |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1)) (= (store .cse4 .cse5 (store (select .cse4 .cse5) .cse6 (select (select |v_#memory_$Pointer$.base_85| .cse5) .cse6))) |v_#memory_$Pointer$.base_85|) (= |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 (select (select |v_old(#memory_$Pointer$.offset)_AFTER_CALL_19| .cse8) .cse9)))) (= (store |v_#memory_$Pointer$.base_86| .cse2 (store (select |v_#memory_$Pointer$.base_86| .cse2) .cse3 (select (select |v_#memory_$Pointer$.base_87| .cse2) .cse3))) |v_#memory_$Pointer$.base_87|) (= (store |v_#memory_$Pointer$.base_85| .cse10 (store (select |v_#memory_$Pointer$.base_85| .cse10) .cse11 (select (select |v_#memory_$Pointer$.base_86| .cse10) .cse11))) |v_#memory_$Pointer$.base_86|) (= (store |v_#memory_int_349| .cse12 (store (select |v_#memory_int_349| .cse12) .cse13 (select (select |v_#memory_int_97| .cse12) .cse13))) |v_#memory_int_97|) (= |v_#memory_$Pointer$.base_BEFORE_CALL_31| (store .cse14 .cse8 (store (select .cse14 .cse8) .cse9 (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_31| .cse8) .cse9)))) (= (store |v_#length_38| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 384) |c_#length|) (= (select |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5|) 0) (= (let ((.cse15 (let ((.cse18 (let ((.cse19 (store |v_#memory_int_97| .cse5 (store (select |v_#memory_int_97| .cse5) .cse6 32)))) (store .cse19 .cse10 (store (select .cse19 .cse10) .cse11 5))))) (store .cse18 .cse2 (store (select .cse18 .cse2) .cse3 8))))) (store .cse15 .cse16 (store (select .cse15 .cse16) .cse17 (select (select |v_#memory_int_96| .cse16) .cse17)))) |v_#memory_int_96|) (<= (+ |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1) |c_#StackHeapBarrier|) (= |v_#memory_$Pointer$.offset_87| (store |v_#memory_$Pointer$.offset_86| .cse10 (store (select |v_#memory_$Pointer$.offset_86| .cse10) .cse11 (select (select |v_#memory_$Pointer$.offset_87| .cse10) .cse11)))) (= |v_#memory_$Pointer$.offset_86| (store .cse20 .cse5 (store (select .cse20 .cse5) .cse6 (select (select |v_#memory_$Pointer$.offset_86| .cse5) .cse6)))))))))) (and (exists ((|v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_16| Int)) (and (<= 0 |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_16|) (<= 384 (mod |v_#Ultimate.C_memset_#t~loopctr164_BEFORE_RETURN_16| 4294967296)))) (exists ((|v_#memory_$Pointer$.offset_302| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_85| (Array Int (Array Int Int))) (|v_#memory_int_96| (Array Int (Array Int Int))) (|v_#memory_int_349| (Array Int (Array Int Int))) (|v_#valid_56| (Array Int Int)) (|v_#memory_int_97| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_87| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~malloc59#1.base_5| Int) (|v_#length_38| (Array Int Int)) (|v_#memory_$Pointer$.offset_86| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_85| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_87| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_20| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_302| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_BEFORE_CALL_33| (Array Int (Array Int Int)))) (let ((.cse37 (select (select |v_#memory_$Pointer$.base_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse38 (select (select |v_#memory_$Pointer$.offset_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse33 (select (select |v_#memory_$Pointer$.base_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse34 (+ 16 (select (select |v_#memory_$Pointer$.offset_302| |c_ULTIMATE.start_main_~user~0#1.base|) 8)))) (let ((.cse41 (store |v_#memory_$Pointer$.offset_302| .cse33 (store (select |v_#memory_$Pointer$.offset_302| .cse33) .cse34 8))) (.cse28 (store |v_#memory_$Pointer$.base_302| .cse33 (store (select |v_#memory_$Pointer$.base_302| .cse33) .cse34 |c_ULTIMATE.start_main_~user~0#1.base|))) (.cse23 (store |v_#memory_$Pointer$.offset_85| .cse37 (store (select |v_#memory_$Pointer$.offset_85| .cse37) .cse38 0))) (.cse35 (store |v_#memory_$Pointer$.base_87| .cse37 (store (select |v_#memory_$Pointer$.base_87| .cse37) .cse38 |v_ULTIMATE.start_main_#t~malloc59#1.base_5|)))) (let ((.cse24 (select (select .cse35 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse25 (+ 40 (select (select .cse23 |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (.cse26 (select (select |v_#memory_$Pointer$.base_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse27 (+ (select (select |v_#memory_$Pointer$.offset_87| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 20)) (.cse31 (select (select |v_#memory_$Pointer$.base_85| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse32 (+ (select (select |v_#memory_$Pointer$.offset_86| |c_ULTIMATE.start_main_~user~0#1.base|) 8) 8)) (.cse29 (select (select .cse28 |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse30 (+ (select (select .cse41 |c_ULTIMATE.start_main_~user~0#1.base|) 8) 4))) (and (not (= |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 0)) (let ((.cse21 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| |c_ULTIMATE.start_main_~user~0#1.base|) 8)) (.cse22 (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_33| |c_ULTIMATE.start_main_~user~0#1.base|) 8))) (or (not (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_33| .cse21) .cse22) 0)) (not (= (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| .cse21) .cse22) 0)))) (= (store .cse23 .cse24 (store (select .cse23 .cse24) .cse25 (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_33| .cse24) .cse25))) |v_#memory_$Pointer$.offset_BEFORE_CALL_33|) (= (store |v_#memory_$Pointer$.offset_87| .cse26 (store (select |v_#memory_$Pointer$.offset_87| .cse26) .cse27 (select (select |v_#memory_$Pointer$.offset_85| .cse26) .cse27))) |v_#memory_$Pointer$.offset_85|) (= |c_#valid| (store |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1)) (= (store .cse28 .cse29 (store (select .cse28 .cse29) .cse30 (select (select |v_#memory_$Pointer$.base_85| .cse29) .cse30))) |v_#memory_$Pointer$.base_85|) (= (store |v_#memory_$Pointer$.base_86| .cse26 (store (select |v_#memory_$Pointer$.base_86| .cse26) .cse27 (select (select |v_#memory_$Pointer$.base_87| .cse26) .cse27))) |v_#memory_$Pointer$.base_87|) (= (store |v_#memory_$Pointer$.base_85| .cse31 (store (select |v_#memory_$Pointer$.base_85| .cse31) .cse32 (select (select |v_#memory_$Pointer$.base_86| .cse31) .cse32))) |v_#memory_$Pointer$.base_86|) (= (store |v_#memory_int_349| .cse33 (store (select |v_#memory_int_349| .cse33) .cse34 (select (select |v_#memory_int_97| .cse33) .cse34))) |v_#memory_int_97|) (= (store |v_#length_38| |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 384) |c_#length|) (= (select |v_#valid_56| |v_ULTIMATE.start_main_#t~malloc59#1.base_5|) 0) (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| (store .cse35 .cse24 (store (select .cse35 .cse24) .cse25 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_20| .cse24) .cse25)))) (= (let ((.cse36 (let ((.cse39 (let ((.cse40 (store |v_#memory_int_97| .cse29 (store (select |v_#memory_int_97| .cse29) .cse30 32)))) (store .cse40 .cse31 (store (select .cse40 .cse31) .cse32 5))))) (store .cse39 .cse26 (store (select .cse39 .cse26) .cse27 8))))) (store .cse36 .cse37 (store (select .cse36 .cse37) .cse38 (select (select |v_#memory_int_96| .cse37) .cse38)))) |v_#memory_int_96|) (<= (+ |v_ULTIMATE.start_main_#t~malloc59#1.base_5| 1) |c_#StackHeapBarrier|) (= |v_#memory_$Pointer$.offset_87| (store |v_#memory_$Pointer$.offset_86| .cse31 (store (select |v_#memory_$Pointer$.offset_86| .cse31) .cse32 (select (select |v_#memory_$Pointer$.offset_87| .cse31) .cse32)))) (= |v_#memory_$Pointer$.offset_86| (store .cse41 .cse29 (store (select .cse41 .cse29) .cse30 (select (select |v_#memory_$Pointer$.offset_86| .cse29) .cse30))))))))))) (<= |c_ULTIMATE.start_main_~i~0#1| 9) (= |c_ULTIMATE.start_main_~user~0#1.offset| 0) (= |c_ULTIMATE.start_main_~users~0#1.offset| 0) (exists ((|v_#memory_$Pointer$.offset_303| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_303| (Array Int (Array Int Int))) (|v_#memory_int_350| (Array Int (Array Int Int)))) (let ((.cse42 (select (select |v_#memory_$Pointer$.base_303| |c_ULTIMATE.start_main_~users~0#1.base|) 8)) (.cse44 (+ 12 (select (select |v_#memory_$Pointer$.offset_303| |c_ULTIMATE.start_main_~users~0#1.base|) 8)))) (and (= |c_#memory_int| (store |v_#memory_int_350| .cse42 (let ((.cse43 (select |v_#memory_int_350| .cse42))) (store .cse43 .cse44 (+ (select .cse43 .cse44) 1))))) (= |c_#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_303| .cse42 (store (select |v_#memory_$Pointer$.base_303| .cse42) .cse44 (select (select |c_#memory_$Pointer$.base| .cse42) .cse44)))) (= |c_#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_303| .cse42 (store (select |v_#memory_$Pointer$.offset_303| .cse42) .cse44 (select (select |c_#memory_$Pointer$.offset| .cse42) .cse44))))))) (= |c_ULTIMATE.start_main_~users~0#1.base| |c_ULTIMATE.start_main_~user~0#1.base|)) is different from false [2023-12-02 13:04:11,451 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1579#(and (= |ULTIMATE.start_main_~user~0#1.base| 0) (= |ULTIMATE.start_main_~users~0#1.offset| 0) (<= 10 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~users~0#1.base| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~user~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-12-02 13:04:11,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:04:11,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:04:11,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-02 13:04:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147193315] [2023-12-02 13:04:11,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:04:11,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:04:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:04:11,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=814, Unknown=80, NotChecked=122, Total=1122 [2023-12-02 13:04:11,454 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 13:04:13,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:15,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:17,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:19,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:21,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:23,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:25,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:27,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:29,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:31,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:33,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:35,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:37,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:39,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:41,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:43,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:45,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:47,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:49,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:51,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:53,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:55,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:57,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:59,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:01,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:04,378 INFO L93 Difference]: Finished difference Result 218 states and 252 transitions. [2023-12-02 13:05:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:05:04,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2023-12-02 13:05:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:04,381 INFO L225 Difference]: With dead ends: 218 [2023-12-02 13:05:04,381 INFO L226 Difference]: Without dead ends: 214 [2023-12-02 13:05:04,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 607.8s TimeCoverageRelationStatistics Valid=106, Invalid=814, Unknown=80, NotChecked=122, Total=1122 [2023-12-02 13:05:04,382 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 205 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:04,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 201 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 25 Unknown, 0 Unchecked, 52.9s Time] [2023-12-02 13:05:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-02 13:05:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-12-02 13:05:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 200 states have (on average 1.105) internal successors, (221), 199 states have internal predecessors, (221), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:05:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 245 transitions. [2023-12-02 13:05:04,408 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 245 transitions. Word has length 46 [2023-12-02 13:05:04,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:04,408 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 245 transitions. [2023-12-02 13:05:04,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 13:05:04,409 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 245 transitions. [2023-12-02 13:05:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 13:05:04,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:04,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:04,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:05:04,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:04,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:05:04,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:04,614 INFO L85 PathProgramCache]: Analyzing trace with hash -473039265, now seen corresponding path program 1 times [2023-12-02 13:05:04,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:04,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526498150] [2023-12-02 13:05:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-02 13:05:05,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:05,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526498150] [2023-12-02 13:05:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526498150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:05:05,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669096905] [2023-12-02 13:05:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:05,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:05,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:05,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:05,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d737ef21-d163-44c8-88de-0135fb94c57c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:05:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:06,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:05:06,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 13:05:06,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 13:05:06,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669096905] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:06,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134356176] [2023-12-02 13:05:06,528 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 13:05:06,529 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:06,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:06,529 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:06,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:30,931 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 301 for LOIs [2023-12-02 13:05:37,011 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:43,847 WARN L293 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 220 DAG size of output: 220 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:06:17,321 WARN L293 SmtUtils]: Spent 30.62s on a formula simplification. DAG size of input: 308 DAG size of output: 308 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)