./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:15,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:15,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:15,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:15,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:15,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:15,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:15,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:15,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:15,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:15,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:15,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:15,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:15,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:15,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:15,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:15,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:15,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:15,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:15,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:15,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:15,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:15,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:15,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:15,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:15,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:15,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:15,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:15,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:15,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:15,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:15,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:15,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:15,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:15,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:15,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:15,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:15,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:15,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:15,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:15,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:15,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:53:15,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:15,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:15,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:15,401 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:15,401 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:15,402 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:15,402 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:15,402 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:15,402 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:15,402 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:15,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:15,407 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:15,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:15,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:15,408 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:15,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:15,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:15,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:15,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:15,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:15,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:15,410 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:15,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:15,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:15,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:15,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:15,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:15,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:15,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:15,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:15,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:15,414 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:15,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:15,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:15,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:15,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:15,415 INFO L138 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_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2021-11-07 00:53:15,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:15,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:15,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:15,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:15,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:15,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-07 00:53:15,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/18addb63f/5dfcd2e8a318440a9d2a76dd02c706f6/FLAG39a6f798d [2021-11-07 00:53:16,687 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:16,688 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-07 00:53:16,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/18addb63f/5dfcd2e8a318440a9d2a76dd02c706f6/FLAG39a6f798d [2021-11-07 00:53:17,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/18addb63f/5dfcd2e8a318440a9d2a76dd02c706f6 [2021-11-07 00:53:17,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:17,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:17,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:17,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:17,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:17,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5ede40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:17, skipping insertion in model container [2021-11-07 00:53:17,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:17" (1/1) ... [2021-11-07 00:53:17,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:17,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:19,322 WARN L228 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_fde82a38-7f53-46af-ad4f-e31defbffa46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-07 00:53:19,379 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 00:53:19,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:19,437 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:53:19,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@449014fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:19, skipping insertion in model container [2021-11-07 00:53:19,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:19,438 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:19,441 INFO L168 Benchmark]: Toolchain (without parser) took 2312.47 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 53.2 MB in the beginning and 66.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:19,441 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 94.4 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:19,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2309.83 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 53.0 MB in the beginning and 66.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:19,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 94.4 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2309.83 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 53.0 MB in the beginning and 66.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7116]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:21,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:21,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:21,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:21,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:21,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:21,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:21,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:21,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:21,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:21,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:21,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:21,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:21,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:21,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:21,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:21,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:21,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:21,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:21,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:21,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:21,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:21,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:21,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:21,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:21,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:21,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:21,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:21,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:21,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:21,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:21,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:21,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:21,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:21,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:21,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:21,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:21,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:21,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:21,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:21,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:21,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:21,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:21,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:21,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:21,785 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:21,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:21,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:21,786 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:21,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:21,786 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:21,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:21,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:21,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:21,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:21,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:21,789 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:21,790 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:21,790 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:21,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:21,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:21,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:21,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:21,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:21,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:21,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:21,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:21,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:21,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:21,793 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:21,793 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:21,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:21,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:21,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:21,794 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2021-11-07 00:53:22,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:22,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:22,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:22,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:22,200 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:22,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-07 00:53:22,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/448c023f7/a3f751fbcb384543b5026c24e106c011/FLAGb87ade1d9 [2021-11-07 00:53:23,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:23,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-07 00:53:23,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/448c023f7/a3f751fbcb384543b5026c24e106c011/FLAGb87ade1d9 [2021-11-07 00:53:23,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/data/448c023f7/a3f751fbcb384543b5026c24e106c011 [2021-11-07 00:53:23,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:23,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:23,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:23,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:23,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:23,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:23" (1/1) ... [2021-11-07 00:53:23,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24610192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:23, skipping insertion in model container [2021-11-07 00:53:23,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:23" (1/1) ... [2021-11-07 00:53:23,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:23,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:26,233 WARN L228 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_fde82a38-7f53-46af-ad4f-e31defbffa46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-07 00:53:26,280 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 00:53:26,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:26,328 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:26,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:26,906 WARN L228 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_fde82a38-7f53-46af-ad4f-e31defbffa46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-07 00:53:26,911 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 00:53:26,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:26,942 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:27,507 WARN L228 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_fde82a38-7f53-46af-ad4f-e31defbffa46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-07 00:53:27,512 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 00:53:27,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:27,735 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:27,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27 WrapperNode [2021-11-07 00:53:27,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:27,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:27,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:27,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:27,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:27,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:28,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:28,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:28,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:28,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:28,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:28,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:28,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:28,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:29,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:29,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:29,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:29,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:29,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:29,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:29,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:29,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (1/1) ... [2021-11-07 00:53:29,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:29,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:29,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:29,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:53:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:53:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:53:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:53:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:53:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:53:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:53:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-07 00:53:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:53:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:53:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:53:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:53:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:53:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:53:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:53:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:53:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:53:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:53:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:53:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:53:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 00:53:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:53:29,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:53:29,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:53:29,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:53:29,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:29,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:56:40,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:56:40,223 INFO L299 CfgBuilder]: Removed 5400 assume(true) statements. [2021-11-07 00:56:40,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:40 BoogieIcfgContainer [2021-11-07 00:56:40,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:56:40,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:56:40,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:56:40,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:56:40,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:23" (1/3) ... [2021-11-07 00:56:40,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d62fd1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:40, skipping insertion in model container [2021-11-07 00:56:40,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:27" (2/3) ... [2021-11-07 00:56:40,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d62fd1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:40, skipping insertion in model container [2021-11-07 00:56:40,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:40" (3/3) ... [2021-11-07 00:56:40,239 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-07 00:56:40,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:56:40,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-07 00:56:40,316 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:56:40,321 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:56:40,322 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-07 00:56:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 5212 states, 5195 states have (on average 1.3451395572666025) internal successors, (6988), 5211 states have internal predecessors, (6988), 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) [2021-11-07 00:56:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 00:56:40,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:40,431 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:40,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:56:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:40,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1631980527, now seen corresponding path program 1 times [2021-11-07 00:56:40,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:40,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609563667] [2021-11-07 00:56:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:40,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:40,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:40,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:40,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:56:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:52,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:56:52,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:53,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:53,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:53,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609563667] [2021-11-07 00:56:53,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609563667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:53,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:53,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:56:53,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618904711] [2021-11-07 00:56:53,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:56:53,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:56:53,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:56:53,505 INFO L87 Difference]: Start difference. First operand has 5212 states, 5195 states have (on average 1.3451395572666025) internal successors, (6988), 5211 states have internal predecessors, (6988), 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) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2021-11-07 00:56:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:53,720 INFO L93 Difference]: Finished difference Result 10420 states and 13971 transitions. [2021-11-07 00:56:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:56:53,722 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 00:56:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:53,772 INFO L225 Difference]: With dead ends: 10420 [2021-11-07 00:56:53,773 INFO L226 Difference]: Without dead ends: 5146 [2021-11-07 00:56:53,789 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:56:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5146 states. [2021-11-07 00:56:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5146 to 5146. [2021-11-07 00:56:54,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5130 states have (on average 1.3284600389863548) internal successors, (6815), 5145 states have internal predecessors, (6815), 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) [2021-11-07 00:56:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 6815 transitions. [2021-11-07 00:56:54,210 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 6815 transitions. Word has length 64 [2021-11-07 00:56:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:54,211 INFO L470 AbstractCegarLoop]: Abstraction has 5146 states and 6815 transitions. [2021-11-07 00:56:54,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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) [2021-11-07 00:56:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 6815 transitions. [2021-11-07 00:56:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 00:56:54,218 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:54,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:54,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:54,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:54,441 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:56:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:54,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1881373433, now seen corresponding path program 1 times [2021-11-07 00:56:54,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:54,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752064713] [2021-11-07 00:56:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:54,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:54,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:54,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:54,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:57:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:06,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:06,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:07,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:07,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:07,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752064713] [2021-11-07 00:57:07,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752064713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:07,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:07,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:57:07,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453885788] [2021-11-07 00:57:07,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:07,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:07,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:57:07,348 INFO L87 Difference]: Start difference. First operand 5146 states and 6815 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-07 00:57:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:08,073 INFO L93 Difference]: Finished difference Result 10279 states and 13627 transitions. [2021-11-07 00:57:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 00:57:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:08,105 INFO L225 Difference]: With dead ends: 10279 [2021-11-07 00:57:08,106 INFO L226 Difference]: Without dead ends: 5157 [2021-11-07 00:57:08,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:57:08,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-11-07 00:57:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 5157. [2021-11-07 00:57:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5141 states have (on average 1.3277572456720483) internal successors, (6826), 5156 states have internal predecessors, (6826), 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) [2021-11-07 00:57:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 6826 transitions. [2021-11-07 00:57:08,269 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 6826 transitions. Word has length 64 [2021-11-07 00:57:08,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:08,270 INFO L470 AbstractCegarLoop]: Abstraction has 5157 states and 6826 transitions. [2021-11-07 00:57:08,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-07 00:57:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 6826 transitions. [2021-11-07 00:57:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 00:57:08,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:08,274 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-11-07 00:57:08,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 00:57:08,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:08,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:57:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:08,490 INFO L85 PathProgramCache]: Analyzing trace with hash -592281726, now seen corresponding path program 1 times [2021-11-07 00:57:08,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:08,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596997053] [2021-11-07 00:57:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:08,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:08,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:08,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:08,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:57:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:20,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:20,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:57:21,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:57:22,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:22,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596997053] [2021-11-07 00:57:22,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596997053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:22,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [907328938] [2021-11-07 00:57:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:22,157 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:22,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:22,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 00:57:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:57:25,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:57:25,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:57:25,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [907328938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:25,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:57:25,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:57:25,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776994975] [2021-11-07 00:57:25,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:57:25,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:57:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:25,842 INFO L87 Difference]: Start difference. First operand 5157 states and 6826 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-07 00:57:26,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:26,801 INFO L93 Difference]: Finished difference Result 12724 states and 16877 transitions. [2021-11-07 00:57:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:57:26,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 00:57:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:26,846 INFO L225 Difference]: With dead ends: 12724 [2021-11-07 00:57:26,846 INFO L226 Difference]: Without dead ends: 7612 [2021-11-07 00:57:26,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7612 states. [2021-11-07 00:57:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7612 to 7570. [2021-11-07 00:57:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7554 states have (on average 1.3318771511781837) internal successors, (10061), 7569 states have internal predecessors, (10061), 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) [2021-11-07 00:57:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 10061 transitions. [2021-11-07 00:57:27,157 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 10061 transitions. Word has length 71 [2021-11-07 00:57:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:27,158 INFO L470 AbstractCegarLoop]: Abstraction has 7570 states and 10061 transitions. [2021-11-07 00:57:27,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-07 00:57:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 10061 transitions. [2021-11-07 00:57:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 00:57:27,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:27,162 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:27,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:27,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:27,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:27,580 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:57:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1044843569, now seen corresponding path program 1 times [2021-11-07 00:57:27,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:27,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896160193] [2021-11-07 00:57:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:27,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:27,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:27,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:57:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:40,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:40,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:57:40,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:57:41,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:41,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896160193] [2021-11-07 00:57:41,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896160193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:41,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1333197219] [2021-11-07 00:57:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:41,520 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:41,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:41,525 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:41,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 00:57:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:44,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:57:44,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:57:45,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:57:45,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1333197219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:45,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:57:45,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 00:57:45,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245355550] [2021-11-07 00:57:45,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:45,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:45,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:45,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:57:45,984 INFO L87 Difference]: Start difference. First operand 7570 states and 10061 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 00:57:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:47,123 INFO L93 Difference]: Finished difference Result 31794 states and 42146 transitions. [2021-11-07 00:57:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:57:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 00:57:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:47,222 INFO L225 Difference]: With dead ends: 31794 [2021-11-07 00:57:47,223 INFO L226 Difference]: Without dead ends: 24269 [2021-11-07 00:57:47,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:57:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24269 states. [2021-11-07 00:57:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24269 to 12446. [2021-11-07 00:57:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12446 states, 12430 states have (on average 1.327835880933226) internal successors, (16505), 12445 states have internal predecessors, (16505), 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) [2021-11-07 00:57:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12446 states to 12446 states and 16505 transitions. [2021-11-07 00:57:47,864 INFO L78 Accepts]: Start accepts. Automaton has 12446 states and 16505 transitions. Word has length 82 [2021-11-07 00:57:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:47,865 INFO L470 AbstractCegarLoop]: Abstraction has 12446 states and 16505 transitions. [2021-11-07 00:57:47,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 00:57:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 12446 states and 16505 transitions. [2021-11-07 00:57:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 00:57:47,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:47,870 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:47,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:48,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-07 00:57:48,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:48,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:57:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:48,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2132101336, now seen corresponding path program 1 times [2021-11-07 00:57:48,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:48,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441692512] [2021-11-07 00:57:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:48,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:48,278 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:48,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:58:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:01,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:58:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:58:01,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:58:02,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:02,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441692512] [2021-11-07 00:58:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441692512] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:02,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1449252774] [2021-11-07 00:58:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:02,117 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:02,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:02,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 00:58:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:58:05,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:58:06,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:58:06,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1449252774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:06,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:58:06,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 00:58:06,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967753012] [2021-11-07 00:58:06,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:06,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:58:06,565 INFO L87 Difference]: Start difference. First operand 12446 states and 16505 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-07 00:58:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:07,851 INFO L93 Difference]: Finished difference Result 56172 states and 74366 transitions. [2021-11-07 00:58:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:58:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 00:58:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:07,966 INFO L225 Difference]: With dead ends: 56172 [2021-11-07 00:58:07,967 INFO L226 Difference]: Without dead ends: 43771 [2021-11-07 00:58:07,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:58:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43771 states. [2021-11-07 00:58:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43771 to 24165. [2021-11-07 00:58:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24165 states, 24149 states have (on average 1.327384156693859) internal successors, (32055), 24164 states have internal predecessors, (32055), 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) [2021-11-07 00:58:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24165 states to 24165 states and 32055 transitions. [2021-11-07 00:58:09,122 INFO L78 Accepts]: Start accepts. Automaton has 24165 states and 32055 transitions. Word has length 83 [2021-11-07 00:58:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:09,122 INFO L470 AbstractCegarLoop]: Abstraction has 24165 states and 32055 transitions. [2021-11-07 00:58:09,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-07 00:58:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 24165 states and 32055 transitions. [2021-11-07 00:58:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 00:58:09,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:09,132 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:58:09,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:09,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:09,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:09,557 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:58:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1477354827, now seen corresponding path program 1 times [2021-11-07 00:58:09,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:09,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430443153] [2021-11-07 00:58:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:09,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:09,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:09,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:09,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:58:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:22,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:58:22,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:58:22,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:58:23,519 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:23,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430443153] [2021-11-07 00:58:23,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430443153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:23,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [907990218] [2021-11-07 00:58:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:23,519 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:23,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:23,520 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:23,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 00:58:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:26,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:58:26,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:58:27,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:58:28,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [907990218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:28,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:58:28,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 00:58:28,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867718473] [2021-11-07 00:58:28,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:28,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:58:28,100 INFO L87 Difference]: Start difference. First operand 24165 states and 32055 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 00:58:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:30,287 INFO L93 Difference]: Finished difference Result 110201 states and 145930 transitions. [2021-11-07 00:58:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:58:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 00:58:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:30,463 INFO L225 Difference]: With dead ends: 110201 [2021-11-07 00:58:30,464 INFO L226 Difference]: Without dead ends: 86081 [2021-11-07 00:58:30,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:58:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86081 states. [2021-11-07 00:58:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86081 to 46956. [2021-11-07 00:58:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46956 states, 46940 states have (on average 1.3266510438858117) internal successors, (62273), 46955 states have internal predecessors, (62273), 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) [2021-11-07 00:58:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46956 states to 46956 states and 62273 transitions. [2021-11-07 00:58:32,417 INFO L78 Accepts]: Start accepts. Automaton has 46956 states and 62273 transitions. Word has length 84 [2021-11-07 00:58:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:32,418 INFO L470 AbstractCegarLoop]: Abstraction has 46956 states and 62273 transitions. [2021-11-07 00:58:32,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 00:58:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 46956 states and 62273 transitions. [2021-11-07 00:58:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 00:58:32,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:32,422 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:58:32,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:32,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:32,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:32,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:58:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1639916686, now seen corresponding path program 1 times [2021-11-07 00:58:32,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:32,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837379670] [2021-11-07 00:58:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:32,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:32,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:32,851 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:32,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:58:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:45,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:58:45,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:58:46,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:58:46,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:46,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837379670] [2021-11-07 00:58:46,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837379670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:46,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1611555970] [2021-11-07 00:58:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:46,986 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:46,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:46,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 00:58:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:50,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:58:50,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:58:51,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:58:52,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1611555970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:52,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:58:52,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 00:58:52,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780637641] [2021-11-07 00:58:52,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:58:52,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:58:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:58:52,065 INFO L87 Difference]: Start difference. First operand 46956 states and 62273 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-07 00:58:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:56,739 INFO L93 Difference]: Finished difference Result 216310 states and 286396 transitions. [2021-11-07 00:58:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:58:56,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 00:58:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:57,232 INFO L225 Difference]: With dead ends: 216310 [2021-11-07 00:58:57,232 INFO L226 Difference]: Without dead ends: 169399 [2021-11-07 00:58:57,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:58:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169399 states. [2021-11-07 00:59:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169399 to 91243. [2021-11-07 00:59:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91243 states, 91227 states have (on average 1.3257368980674582) internal successors, (120943), 91242 states have internal predecessors, (120943), 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) [2021-11-07 00:59:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91243 states to 91243 states and 120943 transitions. [2021-11-07 00:59:01,323 INFO L78 Accepts]: Start accepts. Automaton has 91243 states and 120943 transitions. Word has length 85 [2021-11-07 00:59:01,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:01,324 INFO L470 AbstractCegarLoop]: Abstraction has 91243 states and 120943 transitions. [2021-11-07 00:59:01,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-07 00:59:01,325 INFO L276 IsEmpty]: Start isEmpty. Operand 91243 states and 120943 transitions. [2021-11-07 00:59:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 00:59:01,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:01,329 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:01,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:01,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 00:59:01,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:01,747 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:59:01,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:01,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1002672741, now seen corresponding path program 1 times [2021-11-07 00:59:01,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:01,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876048435] [2021-11-07 00:59:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:01,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:01,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:01,756 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:01,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:59:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:15,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:59:15,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:59:16,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:59:16,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:16,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876048435] [2021-11-07 00:59:16,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876048435] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:16,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1008847482] [2021-11-07 00:59:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:16,887 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:16,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:59:16,896 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:59:16,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 00:59:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:20,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:59:20,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:59:21,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:59:22,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1008847482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:22,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:59:22,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 00:59:22,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725572363] [2021-11-07 00:59:22,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:59:22,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:59:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:59:22,552 INFO L87 Difference]: Start difference. First operand 91243 states and 120943 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2021-11-07 00:59:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:30,780 INFO L93 Difference]: Finished difference Result 307605 states and 407376 transitions. [2021-11-07 00:59:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 00:59:30,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 00:59:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:31,308 INFO L225 Difference]: With dead ends: 307605 [2021-11-07 00:59:31,308 INFO L226 Difference]: Without dead ends: 216407 [2021-11-07 00:59:31,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:59:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216407 states. [2021-11-07 00:59:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216407 to 91323. [2021-11-07 00:59:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91323 states, 91307 states have (on average 1.325451498789797) internal successors, (121023), 91322 states have internal predecessors, (121023), 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) [2021-11-07 00:59:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91323 states to 91323 states and 121023 transitions. [2021-11-07 00:59:36,739 INFO L78 Accepts]: Start accepts. Automaton has 91323 states and 121023 transitions. Word has length 90 [2021-11-07 00:59:36,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:36,740 INFO L470 AbstractCegarLoop]: Abstraction has 91323 states and 121023 transitions. [2021-11-07 00:59:36,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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) [2021-11-07 00:59:36,740 INFO L276 IsEmpty]: Start isEmpty. Operand 91323 states and 121023 transitions. [2021-11-07 00:59:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 00:59:36,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:36,745 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:36,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:37,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 00:59:37,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:37,163 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 00:59:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1073216815, now seen corresponding path program 1 times [2021-11-07 00:59:37,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:37,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807080131] [2021-11-07 00:59:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:37,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:37,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:37,174 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:37,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 00:59:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:51,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:59:51,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:59:52,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:59:53,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:53,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807080131] [2021-11-07 00:59:53,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807080131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:53,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1546273785] [2021-11-07 00:59:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:53,076 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:53,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:59:53,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:59:53,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fde82a38-7f53-46af-ad4f-e31defbffa46/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 00:59:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:57,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:57,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:59:57,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 00:59:58,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1546273785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:58,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:59:58,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:59:58,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627989442] [2021-11-07 00:59:58,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:58,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:59:58,359 INFO L87 Difference]: Start difference. First operand 91323 states and 121023 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-07 01:00:04,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:04,984 INFO L93 Difference]: Finished difference Result 239457 states and 317974 transitions. [2021-11-07 01:00:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:00:04,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 01:00:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:05,250 INFO L225 Difference]: With dead ends: 239457 [2021-11-07 01:00:05,250 INFO L226 Difference]: Without dead ends: 148179 [2021-11-07 01:00:05,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148179 states.