./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:53,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:53,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:53,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:53,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:53,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:53,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:53,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:53,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:53,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:53,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:53,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:53,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:53,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:53,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:53,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:53,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:53,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:53,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:53,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:53,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:53,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:53,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:53,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:53,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:53,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:53,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:53,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:53,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:53,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:53,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:53,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:53,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:53,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:53,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:53,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:53,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:53,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:53,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:53,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:53,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:53,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:20:53,881 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:53,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:53,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:53,884 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:53,884 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:53,884 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:53,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:20:53,885 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:53,885 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:53,885 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:20:53,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:20:53,887 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:53,887 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:20:53,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:20:53,888 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:20:53,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:53,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:20:53,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:53,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:53,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:53,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:53,890 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:53,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:53,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:53,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:53,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:53,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:53,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:53,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:53,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:53,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:53,893 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:20:53,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:20:53,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:53,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:53,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:53,894 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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-11-07 01:20:54,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:54,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:54,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:54,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:54,214 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:54,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 01:20:54,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/dfd110cfd/2e6a2eb71adf490aaba503b620ebb241/FLAGfbe3f8b65 [2021-11-07 01:20:55,262 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:55,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 01:20:55,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/dfd110cfd/2e6a2eb71adf490aaba503b620ebb241/FLAGfbe3f8b65 [2021-11-07 01:20:55,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/dfd110cfd/2e6a2eb71adf490aaba503b620ebb241 [2021-11-07 01:20:55,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:55,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:55,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:55,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:55,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:55,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:55" (1/1) ... [2021-11-07 01:20:55,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f49c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:55, skipping insertion in model container [2021-11-07 01:20:55,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:55" (1/1) ... [2021-11-07 01:20:55,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:55,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:57,576 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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-07 01:20:57,695 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:57,707 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:57,716 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:57,846 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:57,867 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:57,880 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:57,889 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:20:58,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:58,385 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 01:20:58,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@18c9df69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:58, skipping insertion in model container [2021-11-07 01:20:58,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:58,387 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:20:58,389 INFO L168 Benchmark]: Toolchain (without parser) took 2648.15 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 48.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:58,390 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 49.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:20:58,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2641.77 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.4 MB in the beginning and 48.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:20:58,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 49.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2641.77 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 55.4 MB in the beginning and 48.6 MB in the end (delta: 6.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4117]: 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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:21:01,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:21:01,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:21:01,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:21:01,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:21:01,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:21:01,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:21:01,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:21:01,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:21:01,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:21:01,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:21:01,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:21:01,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:21:01,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:21:01,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:21:01,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:21:01,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:21:01,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:21:01,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:21:01,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:21:01,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:21:01,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:21:01,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:21:01,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:21:01,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:21:01,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:21:01,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:21:01,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:21:01,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:21:01,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:21:01,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:21:01,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:21:01,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:21:01,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:21:01,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:21:01,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:21:01,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:21:01,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:21:01,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:21:01,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:21:01,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:21:01,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:21:01,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:21:01,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:21:01,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:21:01,596 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:21:01,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:21:01,597 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:21:01,597 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:21:01,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:21:01,598 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:21:01,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:21:01,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:21:01,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:21:01,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:21:01,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:21:01,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:21:01,601 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:21:01,601 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:21:01,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:21:01,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:21:01,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:21:01,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:21:01,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:21:01,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:21:01,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:01,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:21:01,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:21:01,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:21:01,605 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:21:01,605 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:21:01,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:21:01,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:21:01,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:21:01,606 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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-11-07 01:21:02,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:21:02,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:21:02,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:21:02,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:21:02,193 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:21:02,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 01:21:02,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/0f42267e7/ba5306af6a0748f8bb1eaf47f56227c1/FLAG06df53c70 [2021-11-07 01:21:03,576 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:21:03,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 01:21:03,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/0f42267e7/ba5306af6a0748f8bb1eaf47f56227c1/FLAG06df53c70 [2021-11-07 01:21:03,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/data/0f42267e7/ba5306af6a0748f8bb1eaf47f56227c1 [2021-11-07 01:21:03,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:21:03,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:21:03,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:03,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:21:03,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:21:03,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:03" (1/1) ... [2021-11-07 01:21:03,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c45d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:03, skipping insertion in model container [2021-11-07 01:21:03,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:03" (1/1) ... [2021-11-07 01:21:03,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:21:04,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:05,712 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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-07 01:21:06,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:06,672 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:21:06,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:21:06,910 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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-07 01:21:07,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:07,328 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:21:07,533 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_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-07 01:21:07,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:21:08,056 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:21:08,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08 WrapperNode [2021-11-07 01:21:08,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:21:08,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:21:08,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:21:08,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:21:08,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:08,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:08,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:21:08,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:21:08,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:21:08,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:21:08,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:08,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:08,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:08,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:09,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:09,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:09,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:09,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:21:09,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:21:09,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:21:09,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:21:09,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (1/1) ... [2021-11-07 01:21:09,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:21:09,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:21:09,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:21:09,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:21:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:21:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:21:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:21:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:21:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:21:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:21:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 01:21:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 01:21:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:21:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:21:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:21:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 01:21:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:21:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:21:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:21:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:21:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:21:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:21:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:21:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:21:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:21:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:21:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-07 01:21:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-07 01:21:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-11-07 01:21:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-11-07 01:21:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-11-07 01:21:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-11-07 01:21:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:21:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-11-07 01:21:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-11-07 01:21:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:21:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:21:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:21:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:21:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:21:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:21:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:21:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2021-11-07 01:21:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2021-11-07 01:21:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-11-07 01:21:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-11-07 01:21:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:21:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:21:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:21:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2021-11-07 01:21:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2021-11-07 01:22:41,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:22:41,392 INFO L299 CfgBuilder]: Removed 1975 assume(true) statements. [2021-11-07 01:22:41,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:41 BoogieIcfgContainer [2021-11-07 01:22:41,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:22:41,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:22:41,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:22:41,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:22:41,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:21:03" (1/3) ... [2021-11-07 01:22:41,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4503a19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:41, skipping insertion in model container [2021-11-07 01:22:41,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:08" (2/3) ... [2021-11-07 01:22:41,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4503a19c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:41, skipping insertion in model container [2021-11-07 01:22:41,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:41" (3/3) ... [2021-11-07 01:22:41,406 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-07 01:22:41,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:22:41,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 01:22:41,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:22:41,482 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 01:22:41,482 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 01:22:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 1922 states, 1880 states have (on average 1.373404255319149) internal successors, (2582), 1892 states have internal predecessors, (2582), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-07 01:22:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:22:41,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:41,546 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] [2021-11-07 01:22:41,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:22:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2106712065, now seen corresponding path program 1 times [2021-11-07 01:22:41,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:41,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487317228] [2021-11-07 01:22:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:41,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:41,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:41,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:22:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:49,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:22:49,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:49,887 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 01:22:49,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:50,251 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 01:22:50,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:50,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487317228] [2021-11-07 01:22:50,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487317228] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:50,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:50,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:22:50,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897365148] [2021-11-07 01:22:50,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:50,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:50,283 INFO L87 Difference]: Start difference. First operand has 1922 states, 1880 states have (on average 1.373404255319149) internal successors, (2582), 1892 states have internal predecessors, (2582), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 01:22:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:50,764 INFO L93 Difference]: Finished difference Result 3843 states and 5280 transitions. [2021-11-07 01:22:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:22:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 47 [2021-11-07 01:22:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:50,795 INFO L225 Difference]: With dead ends: 3843 [2021-11-07 01:22:50,795 INFO L226 Difference]: Without dead ends: 1898 [2021-11-07 01:22:50,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-11-07 01:22:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1898. [2021-11-07 01:22:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1857 states have (on average 1.3058696822832525) internal successors, (2425), 1868 states have internal predecessors, (2425), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-07 01:22:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2471 transitions. [2021-11-07 01:22:50,962 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2471 transitions. Word has length 47 [2021-11-07 01:22:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:50,962 INFO L470 AbstractCegarLoop]: Abstraction has 1898 states and 2471 transitions. [2021-11-07 01:22:50,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 01:22:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2471 transitions. [2021-11-07 01:22:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:22:50,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:50,967 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:22:51,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:51,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:51,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:22:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1518525569, now seen corresponding path program 1 times [2021-11-07 01:22:51,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:51,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903344644] [2021-11-07 01:22:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:51,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:51,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:51,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:51,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:22:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:58,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:22:58,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:59,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:00,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:00,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903344644] [2021-11-07 01:23:00,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903344644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:00,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [517607178] [2021-11-07 01:23:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:00,443 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:00,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:00,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:00,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:23:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:03,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:03,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:23:03,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:23:04,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [517607178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:04,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:23:04,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:23:04,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927503053] [2021-11-07 01:23:04,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:04,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:04,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:04,328 INFO L87 Difference]: Start difference. First operand 1898 states and 2471 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 01:23:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:08,097 INFO L93 Difference]: Finished difference Result 7026 states and 9254 transitions. [2021-11-07 01:23:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 49 [2021-11-07 01:23:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:08,132 INFO L225 Difference]: With dead ends: 7026 [2021-11-07 01:23:08,133 INFO L226 Difference]: Without dead ends: 5261 [2021-11-07 01:23:08,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:08,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2021-11-07 01:23:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5245. [2021-11-07 01:23:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5140 states have (on average 1.319260700389105) internal successors, (6781), 5157 states have internal predecessors, (6781), 69 states have call successors, (69), 27 states have call predecessors, (69), 27 states have return successors, (69), 63 states have call predecessors, (69), 69 states have call successors, (69) [2021-11-07 01:23:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 6919 transitions. [2021-11-07 01:23:08,477 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 6919 transitions. Word has length 49 [2021-11-07 01:23:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:08,479 INFO L470 AbstractCegarLoop]: Abstraction has 5245 states and 6919 transitions. [2021-11-07 01:23:08,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 01:23:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 6919 transitions. [2021-11-07 01:23:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:23:08,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:08,486 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:23:08,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:08,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:08,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:08,907 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:23:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:08,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1541307876, now seen corresponding path program 1 times [2021-11-07 01:23:08,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:08,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635798894] [2021-11-07 01:23:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:08,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:08,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:08,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:08,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:23:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:16,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:16,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:16,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:17,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:17,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635798894] [2021-11-07 01:23:17,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635798894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:17,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [86491042] [2021-11-07 01:23:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:17,958 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:17,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:17,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:17,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:23:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:21,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 4069 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:23:21,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:23:23,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:23:25,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [86491042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:25,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:23:25,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:23:25,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574947049] [2021-11-07 01:23:25,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:25,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:25,283 INFO L87 Difference]: Start difference. First operand 5245 states and 6919 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 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 01:23:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:27,047 INFO L93 Difference]: Finished difference Result 15467 states and 20667 transitions. [2021-11-07 01:23:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:23:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 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 57 [2021-11-07 01:23:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:27,118 INFO L225 Difference]: With dead ends: 15467 [2021-11-07 01:23:27,119 INFO L226 Difference]: Without dead ends: 10355 [2021-11-07 01:23:27,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:27,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10355 states. [2021-11-07 01:23:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10355 to 10335. [2021-11-07 01:23:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10335 states, 10134 states have (on average 1.3184329978290903) internal successors, (13361), 10160 states have internal predecessors, (13361), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (207), 126 states have call predecessors, (207), 138 states have call successors, (207) [2021-11-07 01:23:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10335 states to 10335 states and 13706 transitions. [2021-11-07 01:23:27,615 INFO L78 Accepts]: Start accepts. Automaton has 10335 states and 13706 transitions. Word has length 57 [2021-11-07 01:23:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:27,617 INFO L470 AbstractCegarLoop]: Abstraction has 10335 states and 13706 transitions. [2021-11-07 01:23:27,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 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 01:23:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 10335 states and 13706 transitions. [2021-11-07 01:23:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:23:27,620 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:27,624 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:23:27,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:27,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 01:23:28,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:28,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:23:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash 535908222, now seen corresponding path program 1 times [2021-11-07 01:23:28,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:28,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162198523] [2021-11-07 01:23:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:28,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:28,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:28,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:23:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:35,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:35,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:36,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:37,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:37,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162198523] [2021-11-07 01:23:37,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162198523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:37,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925662586] [2021-11-07 01:23:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:37,146 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:37,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:37,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:37,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:23:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:40,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:23:40,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:23:43,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:23:44,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925662586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:23:44,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:23:44,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:23:44,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238512196] [2021-11-07 01:23:44,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:23:44,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:23:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:23:44,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:44,574 INFO L87 Difference]: Start difference. First operand 10335 states and 13706 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 01:23:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:23:45,038 INFO L93 Difference]: Finished difference Result 10335 states and 13706 transitions. [2021-11-07 01:23:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:23:45,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 58 [2021-11-07 01:23:45,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:23:45,122 INFO L225 Difference]: With dead ends: 10335 [2021-11-07 01:23:45,122 INFO L226 Difference]: Without dead ends: 10333 [2021-11-07 01:23:45,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:23:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2021-11-07 01:23:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 10333. [2021-11-07 01:23:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10333 states, 10133 states have (on average 1.3183657357149907) internal successors, (13359), 10158 states have internal predecessors, (13359), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (207), 126 states have call predecessors, (207), 138 states have call successors, (207) [2021-11-07 01:23:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10333 states to 10333 states and 13704 transitions. [2021-11-07 01:23:45,633 INFO L78 Accepts]: Start accepts. Automaton has 10333 states and 13704 transitions. Word has length 58 [2021-11-07 01:23:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:23:45,635 INFO L470 AbstractCegarLoop]: Abstraction has 10333 states and 13704 transitions. [2021-11-07 01:23:45,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 01:23:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10333 states and 13704 transitions. [2021-11-07 01:23:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:23:45,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:23:45,640 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:23:45,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:45,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:23:46,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:23:46,056 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:23:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:23:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash -566709970, now seen corresponding path program 1 times [2021-11-07 01:23:46,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:23:46,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051461716] [2021-11-07 01:23:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:46,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:23:46,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:23:46,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:23:46,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:23:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:53,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 4071 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:23:53,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:54,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:23:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:23:55,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:23:55,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051461716] [2021-11-07 01:23:55,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051461716] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:23:55,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [751365571] [2021-11-07 01:23:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:23:55,361 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:23:55,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:23:55,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:23:55,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:23:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:23:58,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 4071 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:23:58,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:23:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:23:59,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:01,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [751365571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:01,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:24:01,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:24:01,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696184304] [2021-11-07 01:24:01,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:01,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:01,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:01,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:01,098 INFO L87 Difference]: Start difference. First operand 10333 states and 13704 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 01:24:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:01,445 INFO L93 Difference]: Finished difference Result 10333 states and 13704 transitions. [2021-11-07 01:24:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:01,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 59 [2021-11-07 01:24:01,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:01,478 INFO L225 Difference]: With dead ends: 10333 [2021-11-07 01:24:01,478 INFO L226 Difference]: Without dead ends: 10331 [2021-11-07 01:24:01,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:01,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10331 states. [2021-11-07 01:24:01,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10331 to 10331. [2021-11-07 01:24:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10331 states, 10132 states have (on average 1.3182984603237269) internal successors, (13357), 10156 states have internal predecessors, (13357), 138 states have call successors, (138), 54 states have call predecessors, (138), 54 states have return successors, (207), 126 states have call predecessors, (207), 138 states have call successors, (207) [2021-11-07 01:24:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10331 states to 10331 states and 13702 transitions. [2021-11-07 01:24:02,108 INFO L78 Accepts]: Start accepts. Automaton has 10331 states and 13702 transitions. Word has length 59 [2021-11-07 01:24:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:02,110 INFO L470 AbstractCegarLoop]: Abstraction has 10331 states and 13702 transitions. [2021-11-07 01:24:02,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 01:24:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 10331 states and 13702 transitions. [2021-11-07 01:24:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:24:02,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:02,113 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:24:02,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:02,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-07 01:24:02,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:02,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:24:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash -388135544, now seen corresponding path program 1 times [2021-11-07 01:24:02,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:02,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930577603] [2021-11-07 01:24:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:02,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:02,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:02,550 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:02,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:24:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:09,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 4072 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:09,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:10,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:11,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:11,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930577603] [2021-11-07 01:24:11,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930577603] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:11,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [957393010] [2021-11-07 01:24:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:11,775 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:11,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:24:11,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:24:11,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:24:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:14,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 4072 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:14,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:16,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:17,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [957393010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:17,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:24:17,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:24:17,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88187430] [2021-11-07 01:24:17,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:17,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:17,605 INFO L87 Difference]: Start difference. First operand 10331 states and 13702 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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 01:24:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:18,650 INFO L93 Difference]: Finished difference Result 30596 states and 41050 transitions. [2021-11-07 01:24:18,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:18,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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 60 [2021-11-07 01:24:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:18,719 INFO L225 Difference]: With dead ends: 30596 [2021-11-07 01:24:18,719 INFO L226 Difference]: Without dead ends: 20398 [2021-11-07 01:24:18,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20398 states. [2021-11-07 01:24:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20398 to 20113. [2021-11-07 01:24:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20113 states, 19728 states have (on average 1.3207116788321167) internal successors, (26055), 19775 states have internal predecessors, (26055), 270 states have call successors, (270), 108 states have call predecessors, (270), 108 states have return successors, (603), 241 states have call predecessors, (603), 270 states have call successors, (603) [2021-11-07 01:24:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20113 states to 20113 states and 26928 transitions. [2021-11-07 01:24:19,730 INFO L78 Accepts]: Start accepts. Automaton has 20113 states and 26928 transitions. Word has length 60 [2021-11-07 01:24:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:19,731 INFO L470 AbstractCegarLoop]: Abstraction has 20113 states and 26928 transitions. [2021-11-07 01:24:19,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 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 01:24:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 20113 states and 26928 transitions. [2021-11-07 01:24:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:24:19,734 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:19,735 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:24:19,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:20,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:20,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:20,156 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:24:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash 852704376, now seen corresponding path program 1 times [2021-11-07 01:24:20,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:20,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214550242] [2021-11-07 01:24:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:20,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:20,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:20,167 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:20,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:24:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:27,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:27,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:28,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:29,618 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:29,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214550242] [2021-11-07 01:24:29,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214550242] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:29,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [372606233] [2021-11-07 01:24:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:29,619 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:29,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:24:29,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:24:29,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:24:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:32,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:32,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:34,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:35,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [372606233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:35,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:24:35,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:24:35,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890474937] [2021-11-07 01:24:35,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:35,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:35,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:35,438 INFO L87 Difference]: Start difference. First operand 20113 states and 26928 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 01:24:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:35,952 INFO L93 Difference]: Finished difference Result 20113 states and 26928 transitions. [2021-11-07 01:24:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 61 [2021-11-07 01:24:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:36,018 INFO L225 Difference]: With dead ends: 20113 [2021-11-07 01:24:36,018 INFO L226 Difference]: Without dead ends: 20102 [2021-11-07 01:24:36,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20102 states. [2021-11-07 01:24:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20102 to 20102. [2021-11-07 01:24:37,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20102 states, 19718 states have (on average 1.3206207526118268) internal successors, (26040), 19764 states have internal predecessors, (26040), 270 states have call successors, (270), 108 states have call predecessors, (270), 108 states have return successors, (603), 241 states have call predecessors, (603), 270 states have call successors, (603) [2021-11-07 01:24:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20102 states to 20102 states and 26913 transitions. [2021-11-07 01:24:37,164 INFO L78 Accepts]: Start accepts. Automaton has 20102 states and 26913 transitions. Word has length 61 [2021-11-07 01:24:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:37,164 INFO L470 AbstractCegarLoop]: Abstraction has 20102 states and 26913 transitions. [2021-11-07 01:24:37,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 01:24:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 20102 states and 26913 transitions. [2021-11-07 01:24:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:24:37,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:37,170 INFO L513 BasicCegarLoop]: trace histogram [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 01:24:37,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:37,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:37,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:24:37,594 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:24:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash 87472985, now seen corresponding path program 1 times [2021-11-07 01:24:37,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:37,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507454002] [2021-11-07 01:24:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:37,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:37,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:37,610 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:37,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:24:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:45,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:24:45,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:46,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:24:47,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:24:47,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507454002] [2021-11-07 01:24:47,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507454002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:24:47,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153271609] [2021-11-07 01:24:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:47,348 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:24:47,350 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:24:47,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:24:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:24:50,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 4190 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:24:50,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:24:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:51,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:24:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:24:51,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1153271609] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:24:51,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:24:51,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:24:51,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642021189] [2021-11-07 01:24:51,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:24:51,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:24:51,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:24:51,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:51,916 INFO L87 Difference]: Start difference. First operand 20102 states and 26913 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 01:24:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:24:54,935 INFO L93 Difference]: Finished difference Result 58996 states and 79072 transitions. [2021-11-07 01:24:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:24:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 69 [2021-11-07 01:24:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:24:55,073 INFO L225 Difference]: With dead ends: 58996 [2021-11-07 01:24:55,073 INFO L226 Difference]: Without dead ends: 39027 [2021-11-07 01:24:55,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:24:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39027 states. [2021-11-07 01:24:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39027 to 38984. [2021-11-07 01:24:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38984 states, 38240 states have (on average 1.322123430962343) internal successors, (50558), 38322 states have internal predecessors, (50558), 522 states have call successors, (522), 216 states have call predecessors, (522), 216 states have return successors, (1170), 469 states have call predecessors, (1170), 522 states have call successors, (1170) [2021-11-07 01:24:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38984 states to 38984 states and 52250 transitions. [2021-11-07 01:24:57,069 INFO L78 Accepts]: Start accepts. Automaton has 38984 states and 52250 transitions. Word has length 69 [2021-11-07 01:24:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:24:57,069 INFO L470 AbstractCegarLoop]: Abstraction has 38984 states and 52250 transitions. [2021-11-07 01:24:57,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 01:24:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 38984 states and 52250 transitions. [2021-11-07 01:24:57,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 01:24:57,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:24:57,085 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:24:57,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:57,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:24:57,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:24:57,500 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:24:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:24:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -108063307, now seen corresponding path program 1 times [2021-11-07 01:24:57,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:24:57,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252297994] [2021-11-07 01:24:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:24:57,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:24:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:24:57,512 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:24:57,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:25:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:05,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 4330 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:05,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:07,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:08,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:08,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252297994] [2021-11-07 01:25:08,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252297994] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:08,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [789247246] [2021-11-07 01:25:08,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:08,505 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:25:08,506 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:25:08,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:25:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:12,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 4330 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:25:12,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:25:13,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:25:13,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [789247246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:13,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:25:13,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:25:13,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622421676] [2021-11-07 01:25:13,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:13,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:13,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:13,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:13,892 INFO L87 Difference]: Start difference. First operand 38984 states and 52250 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:17,615 INFO L93 Difference]: Finished difference Result 98805 states and 133565 transitions. [2021-11-07 01:25:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-07 01:25:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:18,018 INFO L225 Difference]: With dead ends: 98805 [2021-11-07 01:25:18,019 INFO L226 Difference]: Without dead ends: 59954 [2021-11-07 01:25:18,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59954 states. [2021-11-07 01:25:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59954 to 59870. [2021-11-07 01:25:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59870 states, 58532 states have (on average 1.3399678808173308) internal successors, (78431), 58692 states have internal predecessors, (78431), 900 states have call successors, (900), 432 states have call predecessors, (900), 432 states have return successors, (2016), 793 states have call predecessors, (2016), 900 states have call successors, (2016) [2021-11-07 01:25:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59870 states to 59870 states and 81347 transitions. [2021-11-07 01:25:21,127 INFO L78 Accepts]: Start accepts. Automaton has 59870 states and 81347 transitions. Word has length 98 [2021-11-07 01:25:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:21,128 INFO L470 AbstractCegarLoop]: Abstraction has 59870 states and 81347 transitions. [2021-11-07 01:25:21,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 59870 states and 81347 transitions. [2021-11-07 01:25:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:25:21,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:21,148 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:21,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:21,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:21,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:21,572 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:25:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1452810849, now seen corresponding path program 1 times [2021-11-07 01:25:21,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:21,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573875505] [2021-11-07 01:25:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:21,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:21,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:21,583 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:21,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:25:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:30,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 4282 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:30,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:25:31,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:25:32,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:32,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573875505] [2021-11-07 01:25:32,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573875505] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:32,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1278566591] [2021-11-07 01:25:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:32,889 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:32,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:25:32,890 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:25:32,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:25:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:36,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 4282 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:25:36,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:25:37,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:25:39,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1278566591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:39,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:25:39,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:25:39,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709507735] [2021-11-07 01:25:39,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:25:39,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:25:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:25:39,056 INFO L87 Difference]: Start difference. First operand 59870 states and 81347 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 01:25:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:43,704 INFO L93 Difference]: Finished difference Result 101666 states and 138175 transitions. [2021-11-07 01:25:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:25:43,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 97 [2021-11-07 01:25:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:43,840 INFO L225 Difference]: With dead ends: 101666 [2021-11-07 01:25:43,841 INFO L226 Difference]: Without dead ends: 41913 [2021-11-07 01:25:43,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:25:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41913 states. [2021-11-07 01:25:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41913 to 41634. [2021-11-07 01:25:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41634 states, 40692 states have (on average 1.3410989875159736) internal successors, (54572), 40806 states have internal predecessors, (54572), 630 states have call successors, (630), 306 states have call predecessors, (630), 306 states have return successors, (1389), 555 states have call predecessors, (1389), 630 states have call successors, (1389) [2021-11-07 01:25:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41634 states to 41634 states and 56591 transitions. [2021-11-07 01:25:45,884 INFO L78 Accepts]: Start accepts. Automaton has 41634 states and 56591 transitions. Word has length 97 [2021-11-07 01:25:45,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:45,884 INFO L470 AbstractCegarLoop]: Abstraction has 41634 states and 56591 transitions. [2021-11-07 01:25:45,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 01:25:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 41634 states and 56591 transitions. [2021-11-07 01:25:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:25:45,896 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:45,896 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:25:45,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:46,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:46,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:46,320 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:25:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash 803259743, now seen corresponding path program 1 times [2021-11-07 01:25:46,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:46,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424036327] [2021-11-07 01:25:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:46,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:46,331 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:46,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:25:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:54,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 4377 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:25:54,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:55,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:57,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:57,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424036327] [2021-11-07 01:25:57,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424036327] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:25:57,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1627057689] [2021-11-07 01:25:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:57,428 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:25:57,429 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:25:57,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 01:26:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:01,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 4377 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:01,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:02,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:02,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:03,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1627057689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:03,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:03,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:26:03,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002608536] [2021-11-07 01:26:03,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:26:03,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:26:03,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:03,353 INFO L87 Difference]: Start difference. First operand 41634 states and 56591 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:10,676 INFO L93 Difference]: Finished difference Result 103497 states and 139673 transitions. [2021-11-07 01:26:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:26:10,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-07 01:26:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:10,850 INFO L225 Difference]: With dead ends: 103497 [2021-11-07 01:26:10,850 INFO L226 Difference]: Without dead ends: 61996 [2021-11-07 01:26:10,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:26:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61996 states. [2021-11-07 01:26:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61996 to 61555. [2021-11-07 01:26:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61555 states, 60037 states have (on average 1.3226843446541299) internal successors, (79410), 60225 states have internal predecessors, (79410), 1008 states have call successors, (1008), 504 states have call predecessors, (1008), 504 states have return successors, (2256), 881 states have call predecessors, (2256), 1008 states have call successors, (2256) [2021-11-07 01:26:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61555 states to 61555 states and 82674 transitions. [2021-11-07 01:26:13,706 INFO L78 Accepts]: Start accepts. Automaton has 61555 states and 82674 transitions. Word has length 101 [2021-11-07 01:26:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 61555 states and 82674 transitions. [2021-11-07 01:26:13,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:26:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 61555 states and 82674 transitions. [2021-11-07 01:26:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:26:13,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:13,720 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:13,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:14,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-07 01:26:14,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:26:14,140 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:26:14,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1212067769, now seen corresponding path program 1 times [2021-11-07 01:26:14,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:14,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088057067] [2021-11-07 01:26:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:14,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:14,147 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:14,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:26:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:22,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 4367 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:22,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:26:23,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:26:25,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:25,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088057067] [2021-11-07 01:26:25,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088057067] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:25,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [231366894] [2021-11-07 01:26:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:25,524 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:25,524 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:26:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:29,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 4367 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:26:29,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:30,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:31,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [231366894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:31,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:31,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:26:31,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816371815] [2021-11-07 01:26:31,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:26:31,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:31,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:26:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:26:31,488 INFO L87 Difference]: Start difference. First operand 61555 states and 82674 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 01:26:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:26:37,512 INFO L93 Difference]: Finished difference Result 122854 states and 165042 transitions. [2021-11-07 01:26:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:26:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 101 [2021-11-07 01:26:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:26:37,659 INFO L225 Difference]: With dead ends: 122854 [2021-11-07 01:26:37,659 INFO L226 Difference]: Without dead ends: 61471 [2021-11-07 01:26:37,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:26:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61471 states. [2021-11-07 01:26:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61471 to 61352. [2021-11-07 01:26:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61352 states, 59834 states have (on average 1.3231941705384898) internal successors, (79172), 60022 states have internal predecessors, (79172), 1008 states have call successors, (1008), 504 states have call predecessors, (1008), 504 states have return successors, (2256), 881 states have call predecessors, (2256), 1008 states have call successors, (2256) [2021-11-07 01:26:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61352 states to 61352 states and 82436 transitions. [2021-11-07 01:26:40,691 INFO L78 Accepts]: Start accepts. Automaton has 61352 states and 82436 transitions. Word has length 101 [2021-11-07 01:26:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:26:40,692 INFO L470 AbstractCegarLoop]: Abstraction has 61352 states and 82436 transitions. [2021-11-07 01:26:40,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 01:26:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 61352 states and 82436 transitions. [2021-11-07 01:26:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:26:40,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:26:40,708 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:26:40,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:26:40,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-07 01:26:41,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:41,119 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:26:41,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:26:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash -696173798, now seen corresponding path program 1 times [2021-11-07 01:26:41,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:26:41,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536656022] [2021-11-07 01:26:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:41,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:26:41,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:26:41,127 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:26:41,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:26:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:50,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 4403 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:26:50,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:26:51,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:26:52,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:26:52,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536656022] [2021-11-07 01:26:52,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536656022] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:26:52,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [119746745] [2021-11-07 01:26:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:26:52,968 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:52,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:26:52,968 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:26:52,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 01:26:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:26:57,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 4403 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:26:57,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:26:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:58,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:26:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:26:59,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [119746745] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:26:59,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:26:59,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:26:59,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614534157] [2021-11-07 01:26:59,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:26:59,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:26:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:26:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:26:59,252 INFO L87 Difference]: Start difference. First operand 61352 states and 82436 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 01:27:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:27:07,961 INFO L93 Difference]: Finished difference Result 179582 states and 241623 transitions. [2021-11-07 01:27:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:27:07,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 106 [2021-11-07 01:27:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:27:08,244 INFO L225 Difference]: With dead ends: 179582 [2021-11-07 01:27:08,244 INFO L226 Difference]: Without dead ends: 118410 [2021-11-07 01:27:08,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:27:08,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118410 states. [2021-11-07 01:27:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118410 to 118032. [2021-11-07 01:27:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118032 states, 115218 states have (on average 1.3256609210366437) internal successors, (152740), 115550 states have internal predecessors, (152740), 1872 states have call successors, (1872), 936 states have call predecessors, (1872), 936 states have return successors, (4200), 1649 states have call predecessors, (4200), 1872 states have call successors, (4200) [2021-11-07 01:27:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118032 states to 118032 states and 158812 transitions. [2021-11-07 01:27:14,324 INFO L78 Accepts]: Start accepts. Automaton has 118032 states and 158812 transitions. Word has length 106 [2021-11-07 01:27:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:27:14,324 INFO L470 AbstractCegarLoop]: Abstraction has 118032 states and 158812 transitions. [2021-11-07 01:27:14,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 01:27:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 118032 states and 158812 transitions. [2021-11-07 01:27:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 01:27:14,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:27:14,337 INFO L513 BasicCegarLoop]: trace histogram [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, 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 01:27:14,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:27:14,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-07 01:27:14,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:27:14,738 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 01:27:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:27:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1411714767, now seen corresponding path program 1 times [2021-11-07 01:27:14,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:27:14,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315039810] [2021-11-07 01:27:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:14,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:27:14,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:27:14,745 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:27:14,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-07 01:27:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:23,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 4368 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:23,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:27:24,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:27:26,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:27:26,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315039810] [2021-11-07 01:27:26,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315039810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:27:26,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [727213716] [2021-11-07 01:27:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:27:26,316 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:27:26,317 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:27:26,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ac3ca7-59ab-49c2-a4dd-6c7d206c0624/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-07 01:27:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:27:31,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 4368 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:27:31,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:27:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:27:32,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:27:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:27:33,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [727213716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:27:33,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:27:33,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:27:33,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063783474] [2021-11-07 01:27:33,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:27:33,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:27:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:27:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:27:33,373 INFO L87 Difference]: Start difference. First operand 118032 states and 158812 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)