./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.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_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/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_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/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_4b4ecebf-6534-437e-b9f4-ece5913e6489/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 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:21:10,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:21:10,104 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:21:10,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:21:10,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:21:10,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:21:10,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:21:10,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:21:10,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:21:10,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:21:10,135 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:21:10,135 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:21:10,136 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:21:10,136 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:21:10,137 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:21:10,137 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:21:10,137 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:21:10,138 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:21:10,138 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:21:10,139 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:21:10,139 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:21:10,140 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:21:10,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:21:10,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:21:10,141 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:21:10,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:21:10,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:21:10,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:21:10,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:21:10,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:21:10,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:21:10,144 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:21:10,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:21:10,144 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:21:10,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:21:10,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:21:10,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:21:10,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:21:10,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:21:10,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:21:10,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:21:10,146 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:21:10,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:21:10,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:21:10,147 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:21:10,147 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:21:10,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:21:10,147 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_4b4ecebf-6534-437e-b9f4-ece5913e6489/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2023-12-02 08:21:10,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:21:10,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:21:10,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:21:10,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:21:10,387 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:21:10,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-12-02 08:21:13,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:21:13,371 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:21:13,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-12-02 08:21:13,388 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/data/0abcf6bc2/5ca8c5032d7244499b9a74ed8d3d7155/FLAG1f343ed2e [2023-12-02 08:21:13,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/data/0abcf6bc2/5ca8c5032d7244499b9a74ed8d3d7155 [2023-12-02 08:21:13,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:21:13,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:21:13,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:21:13,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:21:13,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:21:13,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:13,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6222f1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13, skipping insertion in model container [2023-12-02 08:21:13,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:13,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:21:13,781 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_4b4ecebf-6534-437e-b9f4-ece5913e6489/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-12-02 08:21:13,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:21:13,828 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:21:13,863 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_4b4ecebf-6534-437e-b9f4-ece5913e6489/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-12-02 08:21:13,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:21:13,923 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:21:13,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13 WrapperNode [2023-12-02 08:21:13,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:21:13,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:21:13,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:21:13,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:21:13,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:13,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:13,983 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 118 [2023-12-02 08:21:13,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:21:13,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:21:13,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:21:13,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:21:13,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:13,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:21:14,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:21:14,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:21:14,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:21:14,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (1/1) ... [2023-12-02 08:21:14,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:21:14,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:21:14,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:21:14,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:21:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 08:21:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-12-02 08:21:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-12-02 08:21:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 08:21:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 08:21:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-12-02 08:21:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-12-02 08:21:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 08:21:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-12-02 08:21:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-12-02 08:21:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 08:21:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 08:21:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:21:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 08:21:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-12-02 08:21:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-12-02 08:21:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:21:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:21:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:21:14,222 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:21:14,224 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:21:14,515 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:21:14,573 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:21:14,573 INFO L309 CfgBuilder]: Removed 41 assume(true) statements. [2023-12-02 08:21:14,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:21:14 BoogieIcfgContainer [2023-12-02 08:21:14,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:21:14,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:21:14,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:21:14,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:21:14,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:21:13" (1/3) ... [2023-12-02 08:21:14,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e5b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:21:14, skipping insertion in model container [2023-12-02 08:21:14,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:21:13" (2/3) ... [2023-12-02 08:21:14,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e5b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:21:14, skipping insertion in model container [2023-12-02 08:21:14,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:21:14" (3/3) ... [2023-12-02 08:21:14,583 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2023-12-02 08:21:14,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:21:14,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 08:21:14,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:21:14,644 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;@7a595cd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:21:14,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 08:21:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 95 states have internal predecessors, (140), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 08:21:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 08:21:14,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:14,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:21:14,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:14,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -754496073, now seen corresponding path program 1 times [2023-12-02 08:21:14,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:14,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748066670] [2023-12-02 08:21:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:14,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:14,779 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 08:21:14,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748066670] [2023-12-02 08:21:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748066670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:14,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:14,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:21:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713380358] [2023-12-02 08:21:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:14,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:21:14,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:21:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:21:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:21:14,816 INFO L87 Difference]: Start difference. First operand has 105 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 95 states have internal predecessors, (140), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:21:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:14,894 INFO L93 Difference]: Finished difference Result 206 states and 369 transitions. [2023-12-02 08:21:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:21:14,896 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 08:21:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:14,904 INFO L225 Difference]: With dead ends: 206 [2023-12-02 08:21:14,904 INFO L226 Difference]: Without dead ends: 97 [2023-12-02 08:21:14,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:21:14,911 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:14,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:21:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-02 08:21:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-02 08:21:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 87 states have internal predecessors, (92), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 08:21:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2023-12-02 08:21:14,952 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 8 [2023-12-02 08:21:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:14,952 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2023-12-02 08:21:14,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:21:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2023-12-02 08:21:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 08:21:14,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:14,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:21:14,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:21:14,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:14,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash -896617474, now seen corresponding path program 1 times [2023-12-02 08:21:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216600846] [2023-12-02 08:21:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:15,182 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 08:21:15,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216600846] [2023-12-02 08:21:15,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216600846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:15,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:15,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:21:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740504956] [2023-12-02 08:21:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:15,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:21:15,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:21:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:21:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:21:15,186 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:15,374 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2023-12-02 08:21:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:21:15,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 08:21:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:15,376 INFO L225 Difference]: With dead ends: 99 [2023-12-02 08:21:15,377 INFO L226 Difference]: Without dead ends: 96 [2023-12-02 08:21:15,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:21:15,379 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 168 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:15,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 198 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:21:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-02 08:21:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-02 08:21:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 08:21:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2023-12-02 08:21:15,397 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 15 [2023-12-02 08:21:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:15,398 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2023-12-02 08:21:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2023-12-02 08:21:15,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 08:21:15,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:15,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:21:15,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 08:21:15,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:15,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1010502954, now seen corresponding path program 1 times [2023-12-02 08:21:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112369804] [2023-12-02 08:21:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:15,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:15,902 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 08:21:15,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:15,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112369804] [2023-12-02 08:21:15,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112369804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:15,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:15,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 08:21:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710912023] [2023-12-02 08:21:15,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:15,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 08:21:15,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:21:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 08:21:15,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-02 08:21:15,906 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:16,627 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2023-12-02 08:21:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 08:21:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-12-02 08:21:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:16,632 INFO L225 Difference]: With dead ends: 183 [2023-12-02 08:21:16,632 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 08:21:16,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-12-02 08:21:16,635 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 342 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:16,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 495 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 08:21:16,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 08:21:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 159. [2023-12-02 08:21:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 131 states have (on average 1.2671755725190839) internal successors, (166), 145 states have internal predecessors, (166), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 08:21:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 196 transitions. [2023-12-02 08:21:16,672 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 196 transitions. Word has length 18 [2023-12-02 08:21:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:16,673 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 196 transitions. [2023-12-02 08:21:16,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 196 transitions. [2023-12-02 08:21:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 08:21:16,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:16,674 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] [2023-12-02 08:21:16,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 08:21:16,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:16,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash -734298133, now seen corresponding path program 1 times [2023-12-02 08:21:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:16,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173866993] [2023-12-02 08:21:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:17,491 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 08:21:17,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173866993] [2023-12-02 08:21:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173866993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:17,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 08:21:17,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147993968] [2023-12-02 08:21:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:17,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 08:21:17,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:21:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 08:21:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-02 08:21:17,494 INFO L87 Difference]: Start difference. First operand 159 states and 196 transitions. Second operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:18,689 INFO L93 Difference]: Finished difference Result 253 states and 308 transitions. [2023-12-02 08:21:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 08:21:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-02 08:21:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:18,692 INFO L225 Difference]: With dead ends: 253 [2023-12-02 08:21:18,692 INFO L226 Difference]: Without dead ends: 250 [2023-12-02 08:21:18,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2023-12-02 08:21:18,694 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 299 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:18,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 172 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 08:21:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-02 08:21:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 234. [2023-12-02 08:21:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.2613065326633166) internal successors, (251), 214 states have internal predecessors, (251), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 08:21:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 290 transitions. [2023-12-02 08:21:18,734 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 290 transitions. Word has length 21 [2023-12-02 08:21:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:18,734 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 290 transitions. [2023-12-02 08:21:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 290 transitions. [2023-12-02 08:21:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 08:21:18,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:18,735 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] [2023-12-02 08:21:18,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 08:21:18,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:18,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1459497818, now seen corresponding path program 1 times [2023-12-02 08:21:18,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219605093] [2023-12-02 08:21:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:19,228 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 08:21:19,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219605093] [2023-12-02 08:21:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219605093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:19,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:19,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-02 08:21:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643064668] [2023-12-02 08:21:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 08:21:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:21:19,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 08:21:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-02 08:21:19,230 INFO L87 Difference]: Start difference. First operand 234 states and 290 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:20,177 INFO L93 Difference]: Finished difference Result 252 states and 306 transitions. [2023-12-02 08:21:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 08:21:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-12-02 08:21:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:20,179 INFO L225 Difference]: With dead ends: 252 [2023-12-02 08:21:20,179 INFO L226 Difference]: Without dead ends: 249 [2023-12-02 08:21:20,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-12-02 08:21:20,181 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 335 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:20,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 147 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 08:21:20,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-02 08:21:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 234. [2023-12-02 08:21:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.256281407035176) internal successors, (250), 214 states have internal predecessors, (250), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 08:21:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 289 transitions. [2023-12-02 08:21:20,211 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 289 transitions. Word has length 24 [2023-12-02 08:21:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:20,211 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 289 transitions. [2023-12-02 08:21:20,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:20,212 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 289 transitions. [2023-12-02 08:21:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 08:21:20,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:20,213 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] [2023-12-02 08:21:20,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 08:21:20,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:20,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2112541078, now seen corresponding path program 1 times [2023-12-02 08:21:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439583572] [2023-12-02 08:21:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:20,830 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 08:21:20,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439583572] [2023-12-02 08:21:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439583572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:21:20,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:21:20,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 08:21:20,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233657226] [2023-12-02 08:21:20,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:21:20,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 08:21:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:21:20,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 08:21:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:21:20,834 INFO L87 Difference]: Start difference. First operand 234 states and 289 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:21:21,856 INFO L93 Difference]: Finished difference Result 251 states and 304 transitions. [2023-12-02 08:21:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 08:21:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-12-02 08:21:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:21:21,859 INFO L225 Difference]: With dead ends: 251 [2023-12-02 08:21:21,859 INFO L226 Difference]: Without dead ends: 248 [2023-12-02 08:21:21,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-12-02 08:21:21,861 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 329 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:21:21,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 158 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 08:21:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-02 08:21:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 234. [2023-12-02 08:21:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.2512562814070352) internal successors, (249), 214 states have internal predecessors, (249), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 08:21:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 288 transitions. [2023-12-02 08:21:21,902 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 288 transitions. Word has length 27 [2023-12-02 08:21:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:21:21,902 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 288 transitions. [2023-12-02 08:21:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:21:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 288 transitions. [2023-12-02 08:21:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 08:21:21,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:21:21,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:21:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 08:21:21,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:21:21,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:21:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -849953334, now seen corresponding path program 1 times [2023-12-02 08:21:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:21:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153086997] [2023-12-02 08:21:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:21:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:21:22,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:21:22,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153086997] [2023-12-02 08:21:22,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153086997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:21:22,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344776294] [2023-12-02 08:21:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:21:22,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:21:22,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:21:22,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:21:22,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:21:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:21:23,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-02 08:21:23,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:21:23,200 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 08:21:23,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-12-02 08:21:23,230 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 08:21:23,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 08:21:23,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 08:21:23,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 90 [2023-12-02 08:21:23,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2023-12-02 08:21:23,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:21:23,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 20 [2023-12-02 08:21:23,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-12-02 08:21:23,751 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 08:21:23,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 33 [2023-12-02 08:21:23,848 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 08:21:23,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-12-02 08:21:23,868 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 08:21:23,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 08:21:23,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 101 [2023-12-02 08:21:23,990 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2023-12-02 08:21:23,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 103 [2023-12-02 08:21:24,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 101 [2023-12-02 08:21:24,072 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2023-12-02 08:21:24,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 103 [2023-12-02 08:21:24,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 125 [2023-12-02 08:21:24,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 129 [2023-12-02 08:21:24,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:21:24,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 68 [2023-12-02 08:21:24,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:21:24,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 68 [2023-12-02 08:21:24,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:21:24,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 68 [2023-12-02 08:21:24,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 115 [2023-12-02 08:21:24,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 131 [2023-12-02 08:21:24,389 INFO L349 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2023-12-02 08:21:24,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 99 [2023-12-02 08:21:24,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 99 [2023-12-02 08:21:24,439 INFO L349 Elim1Store]: treesize reduction 36, result has 50.7 percent of original size [2023-12-02 08:21:24,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 92 treesize of output 113 [2023-12-02 08:21:24,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 127 [2023-12-02 08:21:24,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 136 [2023-12-02 08:21:24,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-02 08:21:24,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 1 [2023-12-02 08:21:24,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 101 [2023-12-02 08:21:24,633 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2023-12-02 08:21:24,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 103 [2023-12-02 08:21:24,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 101 [2023-12-02 08:21:24,723 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2023-12-02 08:21:24,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 103 [2023-12-02 08:21:24,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 113 [2023-12-02 08:21:24,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 92 [2023-12-02 08:21:24,823 INFO L349 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2023-12-02 08:21:24,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 94 [2023-12-02 08:21:24,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-12-02 08:22:13,111 WARN L293 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 316 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 08:22:13,603 INFO L349 Elim1Store]: treesize reduction 454, result has 2.4 percent of original size [2023-12-02 08:22:13,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 12 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 15 new quantified variables, introduced 14 case distinctions, treesize of input 814 treesize of output 1892 [2023-12-02 08:22:15,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:15,886 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:22:15,888 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:22:15,891 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:22:15,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:22:15,949 INFO L349 Elim1Store]: treesize reduction 1381, result has 0.1 percent of original size [2023-12-02 08:22:15,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 10467 treesize of output 16364 [2023-12-02 08:22:18,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:18,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 08:22:21,583 INFO L224 Elim1Store]: Index analysis took 694 ms [2023-12-02 08:22:38,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 93429 column 7: push canceled [2023-12-02 08:22:38,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [924637894] [2023-12-02 08:22:38,372 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 08:22:38,373 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 08:22:38,376 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 08:22:38,381 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 08:22:38,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 08:22:39,360 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 08:22:39,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [924637894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:22:39,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 08:22:39,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [15] total 15 [2023-12-02 08:22:39,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145447296] [2023-12-02 08:22:39,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:22:39,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:22:39,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:22:39,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:22:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=454, Unknown=20, NotChecked=0, Total=552 [2023-12-02 08:22:39,364 INFO L87 Difference]: Start difference. First operand 234 states and 288 transitions. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 1 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:22:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:22:39,370 INFO L93 Difference]: Finished difference Result 234 states and 288 transitions. [2023-12-02 08:22:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:22:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 1 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-12-02 08:22:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:22:39,370 INFO L225 Difference]: With dead ends: 234 [2023-12-02 08:22:39,370 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 08:22:39,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=78, Invalid=454, Unknown=20, NotChecked=0, Total=552 [2023-12-02 08:22:39,373 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:22:39,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:22:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 08:22:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 08:22:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:22:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 08:22:39,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2023-12-02 08:22:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:22:39,375 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 08:22:39,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 1 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 08:22:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 08:22:39,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 08:22:39,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 08:22:39,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:22:39,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:22:39,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 08:22:39,621 INFO L899 garLoopResultBuilder]: For program point val_from_nodeEXIT(lines 921 924) no Hoare annotation was computed. [2023-12-02 08:22:39,622 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 921 924) the Hoare annotation is: true [2023-12-02 08:22:39,622 INFO L899 garLoopResultBuilder]: For program point failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 840) no Hoare annotation was computed. [2023-12-02 08:22:39,622 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 839 841) the Hoare annotation is: true [2023-12-02 08:22:39,622 INFO L899 garLoopResultBuilder]: For program point failEXIT(lines 839 841) no Hoare annotation was computed. [2023-12-02 08:22:39,622 INFO L902 garLoopResultBuilder]: At program point L861-1(line 861) the Hoare annotation is: true [2023-12-02 08:22:39,622 INFO L899 garLoopResultBuilder]: For program point L861-3(line 861) no Hoare annotation was computed. [2023-12-02 08:22:39,622 INFO L902 garLoopResultBuilder]: At program point L861-4(line 861) the Hoare annotation is: true [2023-12-02 08:22:39,622 INFO L899 garLoopResultBuilder]: For program point L862(line 862) no Hoare annotation was computed. [2023-12-02 08:22:39,623 INFO L902 garLoopResultBuilder]: At program point L862-1(line 862) the Hoare annotation is: true [2023-12-02 08:22:39,623 INFO L899 garLoopResultBuilder]: For program point L862-3(line 862) no Hoare annotation was computed. [2023-12-02 08:22:39,623 INFO L902 garLoopResultBuilder]: At program point L862-4(line 862) the Hoare annotation is: true [2023-12-02 08:22:39,623 INFO L899 garLoopResultBuilder]: For program point L863(line 863) no Hoare annotation was computed. [2023-12-02 08:22:39,623 INFO L902 garLoopResultBuilder]: At program point L863-1(line 863) the Hoare annotation is: true [2023-12-02 08:22:39,623 INFO L899 garLoopResultBuilder]: For program point L863-3(line 863) no Hoare annotation was computed. [2023-12-02 08:22:39,623 INFO L902 garLoopResultBuilder]: At program point L863-4(line 863) the Hoare annotation is: true [2023-12-02 08:22:39,623 INFO L899 garLoopResultBuilder]: For program point inspectEXIT(lines 851 873) no Hoare annotation was computed. [2023-12-02 08:22:39,624 INFO L899 garLoopResultBuilder]: For program point L864(line 864) no Hoare annotation was computed. [2023-12-02 08:22:39,624 INFO L902 garLoopResultBuilder]: At program point L864-1(line 864) the Hoare annotation is: true [2023-12-02 08:22:39,624 INFO L899 garLoopResultBuilder]: For program point L864-3(line 864) no Hoare annotation was computed. [2023-12-02 08:22:39,624 INFO L902 garLoopResultBuilder]: At program point L864-4(line 864) the Hoare annotation is: true [2023-12-02 08:22:39,624 INFO L899 garLoopResultBuilder]: For program point L865(line 865) no Hoare annotation was computed. [2023-12-02 08:22:39,624 INFO L902 garLoopResultBuilder]: At program point L865-1(line 865) the Hoare annotation is: true [2023-12-02 08:22:39,624 INFO L899 garLoopResultBuilder]: For program point L865-3(line 865) no Hoare annotation was computed. [2023-12-02 08:22:39,624 INFO L902 garLoopResultBuilder]: At program point L865-4(line 865) the Hoare annotation is: true [2023-12-02 08:22:39,624 INFO L902 garLoopResultBuilder]: At program point L866(line 866) the Hoare annotation is: true [2023-12-02 08:22:39,625 INFO L899 garLoopResultBuilder]: For program point L866-2(line 866) no Hoare annotation was computed. [2023-12-02 08:22:39,625 INFO L902 garLoopResultBuilder]: At program point L866-3(line 866) the Hoare annotation is: true [2023-12-02 08:22:39,625 INFO L902 garLoopResultBuilder]: At program point L867(line 867) the Hoare annotation is: true [2023-12-02 08:22:39,625 INFO L899 garLoopResultBuilder]: For program point L867-2(line 867) no Hoare annotation was computed. [2023-12-02 08:22:39,625 INFO L902 garLoopResultBuilder]: At program point L867-3(line 867) the Hoare annotation is: true [2023-12-02 08:22:39,625 INFO L902 garLoopResultBuilder]: At program point L868(line 868) the Hoare annotation is: true [2023-12-02 08:22:39,625 INFO L899 garLoopResultBuilder]: For program point L868-2(line 868) no Hoare annotation was computed. [2023-12-02 08:22:39,625 INFO L902 garLoopResultBuilder]: At program point L868-3(line 868) the Hoare annotation is: true [2023-12-02 08:22:39,625 INFO L899 garLoopResultBuilder]: For program point L869(line 869) no Hoare annotation was computed. [2023-12-02 08:22:39,626 INFO L902 garLoopResultBuilder]: At program point L869-1(line 869) the Hoare annotation is: true [2023-12-02 08:22:39,626 INFO L899 garLoopResultBuilder]: For program point L869-3(line 869) no Hoare annotation was computed. [2023-12-02 08:22:39,626 INFO L902 garLoopResultBuilder]: At program point L869-4(line 869) the Hoare annotation is: true [2023-12-02 08:22:39,626 INFO L902 garLoopResultBuilder]: At program point L853-1(line 853) the Hoare annotation is: true [2023-12-02 08:22:39,626 INFO L899 garLoopResultBuilder]: For program point L853-3(line 853) no Hoare annotation was computed. [2023-12-02 08:22:39,626 INFO L902 garLoopResultBuilder]: At program point L853-4(line 853) the Hoare annotation is: true [2023-12-02 08:22:39,626 INFO L899 garLoopResultBuilder]: For program point L870(line 870) no Hoare annotation was computed. [2023-12-02 08:22:39,626 INFO L902 garLoopResultBuilder]: At program point L870-1(line 870) the Hoare annotation is: true [2023-12-02 08:22:39,626 INFO L899 garLoopResultBuilder]: For program point L870-3(line 870) no Hoare annotation was computed. [2023-12-02 08:22:39,627 INFO L902 garLoopResultBuilder]: At program point L870-4(line 870) the Hoare annotation is: true [2023-12-02 08:22:39,627 INFO L899 garLoopResultBuilder]: For program point L870-5(line 870) no Hoare annotation was computed. [2023-12-02 08:22:39,627 INFO L899 garLoopResultBuilder]: For program point L854(line 854) no Hoare annotation was computed. [2023-12-02 08:22:39,627 INFO L902 garLoopResultBuilder]: At program point L854-1(line 854) the Hoare annotation is: true [2023-12-02 08:22:39,627 INFO L899 garLoopResultBuilder]: For program point L854-3(line 854) no Hoare annotation was computed. [2023-12-02 08:22:39,627 INFO L902 garLoopResultBuilder]: At program point L854-4(line 854) the Hoare annotation is: true [2023-12-02 08:22:39,627 INFO L902 garLoopResultBuilder]: At program point L871-3(line 871) the Hoare annotation is: true [2023-12-02 08:22:39,627 INFO L899 garLoopResultBuilder]: For program point L855(line 855) no Hoare annotation was computed. [2023-12-02 08:22:39,627 INFO L902 garLoopResultBuilder]: At program point L855-1(line 855) the Hoare annotation is: true [2023-12-02 08:22:39,627 INFO L899 garLoopResultBuilder]: For program point L855-3(line 855) no Hoare annotation was computed. [2023-12-02 08:22:39,628 INFO L902 garLoopResultBuilder]: At program point L855-4(line 855) the Hoare annotation is: true [2023-12-02 08:22:39,628 INFO L899 garLoopResultBuilder]: For program point L855-5(line 855) no Hoare annotation was computed. [2023-12-02 08:22:39,628 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 851 873) the Hoare annotation is: true [2023-12-02 08:22:39,628 INFO L902 garLoopResultBuilder]: At program point L872(line 872) the Hoare annotation is: true [2023-12-02 08:22:39,628 INFO L899 garLoopResultBuilder]: For program point L872-2(line 872) no Hoare annotation was computed. [2023-12-02 08:22:39,628 INFO L902 garLoopResultBuilder]: At program point L872-3(line 872) the Hoare annotation is: true [2023-12-02 08:22:39,628 INFO L899 garLoopResultBuilder]: For program point L872-4(lines 851 873) no Hoare annotation was computed. [2023-12-02 08:22:39,628 INFO L902 garLoopResultBuilder]: At program point L857-1(line 857) the Hoare annotation is: true [2023-12-02 08:22:39,628 INFO L899 garLoopResultBuilder]: For program point L857-3(line 857) no Hoare annotation was computed. [2023-12-02 08:22:39,629 INFO L902 garLoopResultBuilder]: At program point L857-4(line 857) the Hoare annotation is: true [2023-12-02 08:22:39,629 INFO L899 garLoopResultBuilder]: For program point L858(line 858) no Hoare annotation was computed. [2023-12-02 08:22:39,629 INFO L902 garLoopResultBuilder]: At program point L858-1(line 858) the Hoare annotation is: true [2023-12-02 08:22:39,629 INFO L899 garLoopResultBuilder]: For program point L858-3(line 858) no Hoare annotation was computed. [2023-12-02 08:22:39,629 INFO L902 garLoopResultBuilder]: At program point L858-4(line 858) the Hoare annotation is: true [2023-12-02 08:22:39,629 INFO L899 garLoopResultBuilder]: For program point L859(line 859) no Hoare annotation was computed. [2023-12-02 08:22:39,629 INFO L902 garLoopResultBuilder]: At program point L859-1(line 859) the Hoare annotation is: true [2023-12-02 08:22:39,629 INFO L899 garLoopResultBuilder]: For program point L859-3(line 859) no Hoare annotation was computed. [2023-12-02 08:22:39,629 INFO L902 garLoopResultBuilder]: At program point L859-4(line 859) the Hoare annotation is: true [2023-12-02 08:22:39,630 INFO L899 garLoopResultBuilder]: For program point L859-5(line 859) no Hoare annotation was computed. [2023-12-02 08:22:39,630 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 888 891) the Hoare annotation is: true [2023-12-02 08:22:39,630 INFO L899 garLoopResultBuilder]: For program point list_addEXIT(lines 888 891) no Hoare annotation was computed. [2023-12-02 08:22:39,630 INFO L902 garLoopResultBuilder]: At program point L952(line 952) the Hoare annotation is: true [2023-12-02 08:22:39,630 INFO L899 garLoopResultBuilder]: For program point L952-1(line 952) no Hoare annotation was computed. [2023-12-02 08:22:39,630 INFO L899 garLoopResultBuilder]: For program point L944-1(lines 944 945) no Hoare annotation was computed. [2023-12-02 08:22:39,630 INFO L902 garLoopResultBuilder]: At program point L944-3(lines 944 945) the Hoare annotation is: true [2023-12-02 08:22:39,630 INFO L902 garLoopResultBuilder]: At program point L903(line 903) the Hoare annotation is: true [2023-12-02 08:22:39,630 INFO L902 garLoopResultBuilder]: At program point L932(line 932) the Hoare annotation is: true [2023-12-02 08:22:39,631 INFO L899 garLoopResultBuilder]: For program point L932-1(line 932) no Hoare annotation was computed. [2023-12-02 08:22:39,631 INFO L902 garLoopResultBuilder]: At program point L895(line 895) the Hoare annotation is: true [2023-12-02 08:22:39,631 INFO L899 garLoopResultBuilder]: For program point L895-1(lines 892 896) no Hoare annotation was computed. [2023-12-02 08:22:39,631 INFO L899 garLoopResultBuilder]: For program point L916-1(lines 916 919) no Hoare annotation was computed. [2023-12-02 08:22:39,631 INFO L902 garLoopResultBuilder]: At program point L916-3(lines 916 919) the Hoare annotation is: true [2023-12-02 08:22:39,631 INFO L899 garLoopResultBuilder]: For program point L908-2(lines 908 911) no Hoare annotation was computed. [2023-12-02 08:22:39,631 INFO L899 garLoopResultBuilder]: For program point L904(line 904) no Hoare annotation was computed. [2023-12-02 08:22:39,631 INFO L902 garLoopResultBuilder]: At program point L908-4(lines 908 911) the Hoare annotation is: true [2023-12-02 08:22:39,631 INFO L902 garLoopResultBuilder]: At program point L904-1(line 904) the Hoare annotation is: true [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point L933(lines 933 936) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L902 garLoopResultBuilder]: At program point L950(line 950) the Hoare annotation is: true [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point L950-1(line 950) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point L913(lines 913 920) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point L942(lines 942 946) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point L897(lines 897 905) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L899 garLoopResultBuilder]: For program point L930-1(lines 930 939) no Hoare annotation was computed. [2023-12-02 08:22:39,632 INFO L902 garLoopResultBuilder]: At program point L930-3(lines 930 939) the Hoare annotation is: true [2023-12-02 08:22:39,633 INFO L899 garLoopResultBuilder]: For program point L930-4(lines 930 939) no Hoare annotation was computed. [2023-12-02 08:22:39,633 INFO L899 garLoopResultBuilder]: For program point L906(lines 906 912) no Hoare annotation was computed. [2023-12-02 08:22:39,633 INFO L899 garLoopResultBuilder]: For program point gl_sort_pass_Loop~24#1(lines 930 939) no Hoare annotation was computed. [2023-12-02 08:22:39,633 INFO L902 garLoopResultBuilder]: At program point L931(line 931) the Hoare annotation is: true [2023-12-02 08:22:39,633 INFO L899 garLoopResultBuilder]: For program point L931-1(line 931) no Hoare annotation was computed. [2023-12-02 08:22:39,636 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:22:39,637 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 08:22:39,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:22:39 BoogieIcfgContainer [2023-12-02 08:22:39,645 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 08:22:39,645 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 08:22:39,646 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 08:22:39,646 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 08:22:39,646 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:21:14" (3/4) ... [2023-12-02 08:22:39,647 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 08:22:39,650 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fail [2023-12-02 08:22:39,650 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure val_from_node [2023-12-02 08:22:39,650 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure inspect [2023-12-02 08:22:39,650 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure list_add [2023-12-02 08:22:39,656 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-12-02 08:22:39,656 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 08:22:39,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 08:22:39,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 08:22:39,757 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 08:22:39,758 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 08:22:39,758 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 08:22:39,758 INFO L158 Benchmark]: Toolchain (without parser) took 86352.44ms. Allocated memory was 144.7MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 106.2MB in the beginning and 6.3GB in the end (delta: -6.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-12-02 08:22:39,759 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 56.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:22:39,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.75ms. Allocated memory is still 144.7MB. Free memory was 105.8MB in the beginning and 78.6MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 08:22:39,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.67ms. Allocated memory is still 144.7MB. Free memory was 78.6MB in the beginning and 114.7MB in the end (delta: -36.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2023-12-02 08:22:39,760 INFO L158 Benchmark]: Boogie Preprocessor took 45.41ms. Allocated memory is still 144.7MB. Free memory was 114.7MB in the beginning and 111.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 08:22:39,760 INFO L158 Benchmark]: RCFGBuilder took 545.10ms. Allocated memory is still 144.7MB. Free memory was 111.9MB in the beginning and 82.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 08:22:39,761 INFO L158 Benchmark]: TraceAbstraction took 85067.33ms. Allocated memory was 144.7MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 81.7MB in the beginning and 6.3GB in the end (delta: -6.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-12-02 08:22:39,761 INFO L158 Benchmark]: Witness Printer took 112.44ms. Allocated memory is still 7.6GB. Free memory was 6.3GB in the beginning and 6.3GB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 08:22:39,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 56.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 516.75ms. Allocated memory is still 144.7MB. Free memory was 105.8MB in the beginning and 78.6MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.67ms. Allocated memory is still 144.7MB. Free memory was 78.6MB in the beginning and 114.7MB in the end (delta: -36.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.41ms. Allocated memory is still 144.7MB. Free memory was 114.7MB in the beginning and 111.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 545.10ms. Allocated memory is still 144.7MB. Free memory was 111.9MB in the beginning and 82.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 85067.33ms. Allocated memory was 144.7MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 81.7MB in the beginning and 6.3GB in the end (delta: -6.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 112.44ms. Allocated memory is still 7.6GB. Free memory was 6.3GB in the beginning and 6.3GB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 840]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 85.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1484 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1473 mSDsluCounter, 1284 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 937 mSDsCounter, 175 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3575 IncrementalHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 175 mSolverCounterUnsat, 347 mSDtfsCounter, 3575 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 49.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=4, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 63 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 50 LocationsWithAnnotation, 312 PreInvPairs, 313 NumberOfFragments, 50 HoareAnnotationTreeSize, 312 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 50 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 1942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 1, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 0, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 0, TOOLS_QUANTIFIERELIM_TIME: 0.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 1, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 1, DOMAIN_ISBOTTOM_TIME: 0.9s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 160, DAG_COMPRESSION_RETAINED_NODES: 33, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 916]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 867]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 908]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 872]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 930]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 862]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 855]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 854]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 865]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 869]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 870]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 861]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 858]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 866]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 868]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 863]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 871]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 864]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 904]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 859]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 944]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 857]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 853]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-02 08:22:39,977 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-12-02 08:22:40,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b4ecebf-6534-437e-b9f4-ece5913e6489/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE