./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:29:05,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:29:05,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:29:05,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:29:05,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:29:05,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:29:05,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:29:05,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:29:05,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:29:05,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:29:05,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:29:05,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:29:05,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:29:05,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:29:05,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:29:05,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:29:05,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:29:05,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:29:05,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:29:05,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:29:05,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:29:05,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:29:05,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:29:05,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:29:05,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:29:05,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:29:05,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:29:05,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:29:05,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:29:05,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:29:05,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:29:05,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:29:05,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:29:05,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:29:05,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:29:05,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:29:05,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:29:05,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:29:05,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:29:05,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:29:05,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:29:05,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:29:05,790 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:29:05,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:29:05,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:29:05,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:29:05,792 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:29:05,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:29:05,792 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:29:05,792 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:29:05,793 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:29:05,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:29:05,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:29:05,794 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:29:05,794 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:29:05,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:29:05,795 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:29:05,795 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:29:05,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:29:05,796 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:29:05,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:29:05,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:29:05,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:29:05,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:29:05,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:29:05,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:29:05,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:29:05,798 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:29:05,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:29:05,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:29:05,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:29:05,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:29:05,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:29:05,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:29:05,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:29:05,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:29:05,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:29:05,801 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:29:05,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:29:05,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:29:05,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:29:05,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:29:05,802 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_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-13 02:29:06,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:29:06,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:29:06,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:29:06,068 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:29:06,069 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:29:06,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-13 02:29:06,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/091730fae/ac7ca95690c04ed9b03cd6f2623231c3/FLAGea3923eb2 [2021-11-13 02:29:06,777 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:29:06,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-13 02:29:06,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/091730fae/ac7ca95690c04ed9b03cd6f2623231c3/FLAGea3923eb2 [2021-11-13 02:29:06,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/091730fae/ac7ca95690c04ed9b03cd6f2623231c3 [2021-11-13 02:29:06,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:29:06,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:29:06,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:06,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:29:06,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:29:06,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:06" (1/1) ... [2021-11-13 02:29:06,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40186e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:06, skipping insertion in model container [2021-11-13 02:29:06,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:06" (1/1) ... [2021-11-13 02:29:07,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:29:07,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:29:07,775 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_4f901207-8653-47fb-869e-368005425818/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-13 02:29:07,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:07,812 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) [2021-11-13 02:29:07,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49ec2521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:07, skipping insertion in model container [2021-11-13 02:29:07,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:07,814 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:29:07,816 INFO L158 Benchmark]: Toolchain (without parser) took 829.21ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 50.6MB in the beginning and 77.1MB in the end (delta: -26.5MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2021-11-13 02:29:07,818 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:29:07,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 825.80ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 50.4MB in the beginning and 77.1MB in the end (delta: -26.7MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2021-11-13 02:29:07,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 90.2MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 825.80ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 50.4MB in the beginning and 77.1MB in the end (delta: -26.7MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: 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_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:29:10,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:29:10,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:29:10,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:29:10,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:29:10,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:29:10,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:29:10,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:29:10,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:29:10,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:29:10,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:29:10,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:29:10,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:29:10,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:29:10,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:29:10,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:29:10,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:29:10,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:29:10,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:29:10,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:29:10,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:29:10,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:29:10,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:29:10,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:29:10,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:29:10,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:29:10,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:29:10,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:29:10,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:29:10,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:29:10,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:29:10,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:29:10,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:29:10,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:29:10,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:29:10,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:29:10,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:29:10,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:29:10,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:29:10,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:29:10,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:29:10,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:29:10,539 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:29:10,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:29:10,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:29:10,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:29:10,541 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:29:10,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:29:10,541 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:29:10,541 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:29:10,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:29:10,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:29:10,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:29:10,544 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:29:10,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:29:10,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:29:10,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:29:10,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:29:10,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:29:10,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:29:10,546 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:29:10,546 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:29:10,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:29:10,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:29:10,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:29:10,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:29:10,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:29:10,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:29:10,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:29:10,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:29:10,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:29:10,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:29:10,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:29:10,549 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:29:10,549 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:29:10,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:29:10,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:29:10,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:29:10,550 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_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-13 02:29:10,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:29:10,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:29:10,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:29:10,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:29:10,943 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:29:10,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-13 02:29:11,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/ca9f4ecbb/66dd08ce66a84512a760977ed12b95da/FLAG85e5d424e [2021-11-13 02:29:11,778 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:29:11,779 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-13 02:29:11,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/ca9f4ecbb/66dd08ce66a84512a760977ed12b95da/FLAG85e5d424e [2021-11-13 02:29:11,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/data/ca9f4ecbb/66dd08ce66a84512a760977ed12b95da [2021-11-13 02:29:11,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:29:11,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:29:12,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:12,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:29:12,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:29:12,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:11" (1/1) ... [2021-11-13 02:29:12,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b023dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:12, skipping insertion in model container [2021-11-13 02:29:12,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:29:11" (1/1) ... [2021-11-13 02:29:12,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:29:12,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:29:12,719 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_4f901207-8653-47fb-869e-368005425818/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-13 02:29:12,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:12,780 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:29:12,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:29:12,977 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_4f901207-8653-47fb-869e-368005425818/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-13 02:29:12,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:13,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:29:13,175 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_4f901207-8653-47fb-869e-368005425818/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-13 02:29:13,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:29:13,213 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:29:13,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13 WrapperNode [2021-11-13 02:29:13,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:29:13,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:29:13,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:29:13,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:29:13,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:29:13,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:29:13,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:29:13,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:29:13,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:29:13,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:29:13,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:29:13,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:29:13,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (1/1) ... [2021-11-13 02:29:13,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:29:13,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:29:13,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:29:13,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:29:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:29:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:29:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:29:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:29:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:29:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:29:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:29:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:29:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:29:13,973 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:29:24,534 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-13 02:29:24,534 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-13 02:29:24,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:29:24,543 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:29:24,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:29:24 BoogieIcfgContainer [2021-11-13 02:29:24,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:29:24,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:29:24,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:29:24,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:29:24,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:29:11" (1/3) ... [2021-11-13 02:29:24,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a08d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:29:24, skipping insertion in model container [2021-11-13 02:29:24,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:29:13" (2/3) ... [2021-11-13 02:29:24,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a08d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:29:24, skipping insertion in model container [2021-11-13 02:29:24,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:29:24" (3/3) ... [2021-11-13 02:29:24,553 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2021-11-13 02:29:24,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:29:24,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:29:24,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:29:24,614 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 [2021-11-13 02:29:24,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:29:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 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) [2021-11-13 02:29:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-13 02:29:24,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:24,644 INFO L514 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] [2021-11-13 02:29:24,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash 918515972, now seen corresponding path program 1 times [2021-11-13 02:29:24,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:24,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392861400] [2021-11-13 02:29:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:24,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:24,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:24,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:24,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:29:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:24,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:29:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:29:25,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:29:25,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:25,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392861400] [2021-11-13 02:29:25,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392861400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:25,540 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:29:25,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:29:25,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055515903] [2021-11-13 02:29:25,542 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:25,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:29:25,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:25,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:29:25,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:25,589 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-11-13 02:29:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:25,859 INFO L93 Difference]: Finished difference Result 574 states and 984 transitions. [2021-11-13 02:29:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:29:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 44 [2021-11-13 02:29:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:25,884 INFO L225 Difference]: With dead ends: 574 [2021-11-13 02:29:25,886 INFO L226 Difference]: Without dead ends: 392 [2021-11-13 02:29:25,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:25,895 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 392 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.31ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:25,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 672 Invalid, 101 Unknown, 0 Unchecked, 12.31ms Time], IncrementalHoareTripleChecker [36 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 172.70ms Time] [2021-11-13 02:29:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-13 02:29:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-13 02:29:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5319693094629157) internal successors, (599), 391 states have internal predecessors, (599), 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) [2021-11-13 02:29:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 599 transitions. [2021-11-13 02:29:25,994 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 599 transitions. Word has length 44 [2021-11-13 02:29:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:25,995 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 599 transitions. [2021-11-13 02:29:25,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-11-13 02:29:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 599 transitions. [2021-11-13 02:29:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-13 02:29:26,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:26,009 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:29:26,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:26,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:29:26,226 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash 85239560, now seen corresponding path program 1 times [2021-11-13 02:29:26,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:26,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185581413] [2021-11-13 02:29:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:26,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:26,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:26,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:26,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:29:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:26,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:29:26,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:29:27,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:29:27,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:27,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185581413] [2021-11-13 02:29:27,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185581413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:27,501 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:29:27,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:29:27,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260679314] [2021-11-13 02:29:27,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:27,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:29:27,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:29:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:27,506 INFO L87 Difference]: Start difference. First operand 392 states and 599 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2021-11-13 02:29:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:28,041 INFO L93 Difference]: Finished difference Result 897 states and 1389 transitions. [2021-11-13 02:29:28,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:29:28,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 104 [2021-11-13 02:29:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:28,046 INFO L225 Difference]: With dead ends: 897 [2021-11-13 02:29:28,047 INFO L226 Difference]: Without dead ends: 642 [2021-11-13 02:29:28,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:28,050 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 303 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 499.66ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:28,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 721 Invalid, 107 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 499.66ms Time] [2021-11-13 02:29:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-13 02:29:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-11-13 02:29:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.5241809672386895) internal successors, (977), 641 states have internal predecessors, (977), 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) [2021-11-13 02:29:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 977 transitions. [2021-11-13 02:29:28,085 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 977 transitions. Word has length 104 [2021-11-13 02:29:28,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:28,086 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 977 transitions. [2021-11-13 02:29:28,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2021-11-13 02:29:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 977 transitions. [2021-11-13 02:29:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 02:29:28,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:28,089 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 02:29:28,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:28,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:29:28,304 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:28,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash -19862405, now seen corresponding path program 1 times [2021-11-13 02:29:28,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:28,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664566719] [2021-11-13 02:29:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:28,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:28,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:28,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:29:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:28,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:29:28,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 02:29:29,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 02:29:30,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:30,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664566719] [2021-11-13 02:29:30,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664566719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:30,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:29:30,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:29:30,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989136548] [2021-11-13 02:29:30,005 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:30,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:29:30,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:29:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:30,016 INFO L87 Difference]: Start difference. First operand 642 states and 977 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-11-13 02:29:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:30,800 INFO L93 Difference]: Finished difference Result 1400 states and 2148 transitions. [2021-11-13 02:29:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:29:30,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2021-11-13 02:29:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:30,810 INFO L225 Difference]: With dead ends: 1400 [2021-11-13 02:29:30,810 INFO L226 Difference]: Without dead ends: 895 [2021-11-13 02:29:30,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:30,818 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 303 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 704.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.32ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 740.75ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:30,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 727 Invalid, 106 Unknown, 0 Unchecked, 3.32ms Time], IncrementalHoareTripleChecker [31 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 740.75ms Time] [2021-11-13 02:29:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-13 02:29:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-13 02:29:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.5190156599552573) internal successors, (1358), 894 states have internal predecessors, (1358), 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) [2021-11-13 02:29:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1358 transitions. [2021-11-13 02:29:30,867 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1358 transitions. Word has length 167 [2021-11-13 02:29:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:30,869 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1358 transitions. [2021-11-13 02:29:30,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-11-13 02:29:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1358 transitions. [2021-11-13 02:29:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-13 02:29:30,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:30,878 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-13 02:29:30,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:31,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:29:31,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:31,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1844926231, now seen corresponding path program 1 times [2021-11-13 02:29:31,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:31,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342443881] [2021-11-13 02:29:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:31,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:31,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:31,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:31,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:29:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:31,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:29:31,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-13 02:29:32,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-13 02:29:32,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:32,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342443881] [2021-11-13 02:29:32,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342443881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:32,992 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:29:32,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:29:32,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758504933] [2021-11-13 02:29:32,993 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:32,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:29:32,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:32,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:29:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:32,995 INFO L87 Difference]: Start difference. First operand 895 states and 1358 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2021-11-13 02:29:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:33,610 INFO L93 Difference]: Finished difference Result 1904 states and 2905 transitions. [2021-11-13 02:29:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:29:33,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 230 [2021-11-13 02:29:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:33,626 INFO L225 Difference]: With dead ends: 1904 [2021-11-13 02:29:33,627 INFO L226 Difference]: Without dead ends: 1146 [2021-11-13 02:29:33,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:33,632 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 311 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 447.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.20ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 540.24ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:33,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 725 Invalid, 103 Unknown, 0 Unchecked, 6.20ms Time], IncrementalHoareTripleChecker [29 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 540.24ms Time] [2021-11-13 02:29:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-13 02:29:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2021-11-13 02:29:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.514410480349345) internal successors, (1734), 1145 states have internal predecessors, (1734), 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) [2021-11-13 02:29:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1734 transitions. [2021-11-13 02:29:33,697 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1734 transitions. Word has length 230 [2021-11-13 02:29:33,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:33,699 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1734 transitions. [2021-11-13 02:29:33,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2021-11-13 02:29:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1734 transitions. [2021-11-13 02:29:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-13 02:29:33,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:33,724 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-13 02:29:33,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:33,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:29:33,939 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1007722868, now seen corresponding path program 1 times [2021-11-13 02:29:33,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:33,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173455994] [2021-11-13 02:29:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:33,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:33,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:33,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:29:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:34,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:29:34,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 02:29:35,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-13 02:29:36,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:36,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173455994] [2021-11-13 02:29:36,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173455994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:36,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:29:36,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:29:36,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277798922] [2021-11-13 02:29:36,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:36,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:29:36,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:29:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:36,170 INFO L87 Difference]: Start difference. First operand 1146 states and 1734 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-11-13 02:29:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:36,676 INFO L93 Difference]: Finished difference Result 2409 states and 3659 transitions. [2021-11-13 02:29:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:29:36,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 294 [2021-11-13 02:29:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:36,695 INFO L225 Difference]: With dead ends: 2409 [2021-11-13 02:29:36,695 INFO L226 Difference]: Without dead ends: 1400 [2021-11-13 02:29:36,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:36,697 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 315 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 397.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.32ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 430.09ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:36,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 728 Invalid, 102 Unknown, 0 Unchecked, 3.32ms Time], IncrementalHoareTripleChecker [27 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 430.09ms Time] [2021-11-13 02:29:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-13 02:29:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1400. [2021-11-13 02:29:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 1.5096497498213008) internal successors, (2112), 1399 states have internal predecessors, (2112), 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) [2021-11-13 02:29:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2112 transitions. [2021-11-13 02:29:36,753 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2112 transitions. Word has length 294 [2021-11-13 02:29:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:36,753 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2112 transitions. [2021-11-13 02:29:36,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-11-13 02:29:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2112 transitions. [2021-11-13 02:29:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-13 02:29:36,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:36,762 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2021-11-13 02:29:36,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:36,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:29:36,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:36,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1828138848, now seen corresponding path program 1 times [2021-11-13 02:29:36,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:36,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876551964] [2021-11-13 02:29:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:36,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:36,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:37,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:29:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:37,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:29:37,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-13 02:29:38,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-13 02:29:39,425 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:39,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876551964] [2021-11-13 02:29:39,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876551964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:39,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:29:39,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:29:39,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406020665] [2021-11-13 02:29:39,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:39,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:29:39,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:29:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:39,428 INFO L87 Difference]: Start difference. First operand 1400 states and 2112 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2021-11-13 02:29:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:29:40,058 INFO L93 Difference]: Finished difference Result 2914 states and 4408 transitions. [2021-11-13 02:29:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:29:40,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 358 [2021-11-13 02:29:40,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:29:40,072 INFO L225 Difference]: With dead ends: 2914 [2021-11-13 02:29:40,072 INFO L226 Difference]: Without dead ends: 1651 [2021-11-13 02:29:40,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:29:40,076 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 317 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 496.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 533.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:29:40,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 729 Invalid, 99 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [24 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 533.63ms Time] [2021-11-13 02:29:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-13 02:29:40,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-13 02:29:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5054545454545454) internal successors, (2484), 1650 states have internal predecessors, (2484), 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) [2021-11-13 02:29:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2484 transitions. [2021-11-13 02:29:40,156 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2484 transitions. Word has length 358 [2021-11-13 02:29:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:29:40,157 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2484 transitions. [2021-11-13 02:29:40,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2021-11-13 02:29:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2484 transitions. [2021-11-13 02:29:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-13 02:29:40,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:29:40,180 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-11-13 02:29:40,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:29:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:29:40,404 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:29:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:29:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash -152438136, now seen corresponding path program 1 times [2021-11-13 02:29:40,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:29:40,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953398144] [2021-11-13 02:29:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:29:40,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:29:40,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:29:40,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:29:40,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:29:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:29:42,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:29:42,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:29:42,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 02:29:42,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 02:29:42,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:42,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 02:29:42,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-13 02:29:43,252 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-13 02:29:43,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 601 treesize of output 573 [2021-11-13 02:29:43,367 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-13 02:29:43,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-13 02:29:43,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:43,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 02:29:43,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:43,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-13 02:29:43,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-13 02:29:43,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-13 02:29:43,685 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-13 02:29:43,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-13 02:29:43,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:29:43,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-13 02:29:43,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-13 02:29:43,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-13 02:29:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-13 02:29:44,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:29:45,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-13 02:29:45,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-13 02:29:45,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-13 02:29:45,823 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-13 02:29:45,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-13 02:29:45,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-13 02:29:45,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-13 02:29:45,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:29:45,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-13 02:29:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-13 02:29:46,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:29:46,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953398144] [2021-11-13 02:29:46,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953398144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:29:46,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:29:46,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:29:46,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377409564] [2021-11-13 02:29:46,480 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:29:46,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:29:46,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:29:46,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:29:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:29:46,483 INFO L87 Difference]: Start difference. First operand 1651 states and 2484 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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) [2021-11-13 02:29:48,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:29:50,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:29:53,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:29:58,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:30:01,167 INFO L93 Difference]: Finished difference Result 3299 states and 4964 transitions. [2021-11-13 02:30:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:30:01,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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 392 [2021-11-13 02:30:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:30:01,181 INFO L225 Difference]: With dead ends: 3299 [2021-11-13 02:30:01,182 INFO L226 Difference]: Without dead ends: 1651 [2021-11-13 02:30:01,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:30:01,184 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 12 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14206.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 14549.42ms IncrementalHoareTripleChecker+Time [2021-11-13 02:30:01,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 852 Invalid, 229 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 60 Unchecked, 14549.42ms Time] [2021-11-13 02:30:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-13 02:30:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-13 02:30:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5048484848484849) internal successors, (2483), 1650 states have internal predecessors, (2483), 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) [2021-11-13 02:30:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2483 transitions. [2021-11-13 02:30:01,243 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2483 transitions. Word has length 392 [2021-11-13 02:30:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:30:01,243 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2483 transitions. [2021-11-13 02:30:01,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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) [2021-11-13 02:30:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2483 transitions. [2021-11-13 02:30:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-13 02:30:01,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:30:01,254 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-11-13 02:30:01,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:30:01,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:30:01,469 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:30:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:30:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash -924972090, now seen corresponding path program 1 times [2021-11-13 02:30:01,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:30:01,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889504823] [2021-11-13 02:30:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:30:01,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:30:01,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:30:01,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:30:01,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:30:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:30:02,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:30:02,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:30:02,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:02,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:02,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:02,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:03,081 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-13 02:30:03,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-13 02:30:03,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:03,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:03,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:03,415 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-13 02:30:03,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-13 02:30:04,646 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-13 02:30:04,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-13 02:30:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-13 02:30:05,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:30:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-13 02:30:06,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:30:06,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889504823] [2021-11-13 02:30:06,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889504823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:30:06,377 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:30:06,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-13 02:30:06,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113665021] [2021-11-13 02:30:06,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:30:06,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:30:06,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:30:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:30:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:30:06,379 INFO L87 Difference]: Start difference. First operand 1651 states and 2483 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2021-11-13 02:30:08,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:18,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:22,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:25,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:27,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:28,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:29,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:39,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:40,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:30:44,886 INFO L93 Difference]: Finished difference Result 6246 states and 9434 transitions. [2021-11-13 02:30:44,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:30:44,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 392 [2021-11-13 02:30:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:30:44,923 INFO L225 Difference]: With dead ends: 6246 [2021-11-13 02:30:44,923 INFO L226 Difference]: Without dead ends: 4605 [2021-11-13 02:30:44,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:30:44,929 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 396 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37211.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.51ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38192.32ms IncrementalHoareTripleChecker+Time [2021-11-13 02:30:44,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 836 Invalid, 812 Unknown, 0 Unchecked, 8.51ms Time], IncrementalHoareTripleChecker [88 Valid, 723 Invalid, 1 Unknown, 0 Unchecked, 38192.32ms Time] [2021-11-13 02:30:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2021-11-13 02:30:45,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 1975. [2021-11-13 02:30:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.5405268490374873) internal successors, (3041), 1974 states have internal predecessors, (3041), 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) [2021-11-13 02:30:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3041 transitions. [2021-11-13 02:30:45,135 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3041 transitions. Word has length 392 [2021-11-13 02:30:45,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:30:45,135 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 3041 transitions. [2021-11-13 02:30:45,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2021-11-13 02:30:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3041 transitions. [2021-11-13 02:30:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-13 02:30:45,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:30:45,144 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-11-13 02:30:45,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:30:45,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:30:45,358 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:30:45,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:30:45,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1676639032, now seen corresponding path program 1 times [2021-11-13 02:30:45,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:30:45,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119988863] [2021-11-13 02:30:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:30:45,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:30:45,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:30:45,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:30:45,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:30:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:30:46,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:30:46,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:30:47,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:47,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:47,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:30:47,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:47,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:47,383 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-13 02:30:47,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-13 02:30:47,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:47,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:47,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:30:47,675 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-13 02:30:47,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-13 02:30:49,698 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-13 02:30:49,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-13 02:30:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-13 02:30:49,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:30:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-13 02:30:50,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:30:50,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119988863] [2021-11-13 02:30:50,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119988863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:30:50,807 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:30:50,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-13 02:30:50,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459238078] [2021-11-13 02:30:50,807 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:30:50,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:30:50,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:30:50,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:30:50,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:30:50,810 INFO L87 Difference]: Start difference. First operand 1975 states and 3041 transitions. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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) [2021-11-13 02:30:52,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:55,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:30:58,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:02,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:04,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:12,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:19,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:20,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:33,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:35,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:31:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:31:38,260 INFO L93 Difference]: Finished difference Result 8331 states and 12766 transitions. [2021-11-13 02:31:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:31:38,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 392 [2021-11-13 02:31:38,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:31:38,307 INFO L225 Difference]: With dead ends: 8331 [2021-11-13 02:31:38,307 INFO L226 Difference]: Without dead ends: 6366 [2021-11-13 02:31:38,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:31:38,313 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 359 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45841.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.64ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47017.28ms IncrementalHoareTripleChecker+Time [2021-11-13 02:31:38,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 889 Invalid, 866 Unknown, 0 Unchecked, 7.64ms Time], IncrementalHoareTripleChecker [86 Valid, 779 Invalid, 1 Unknown, 0 Unchecked, 47017.28ms Time] [2021-11-13 02:31:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2021-11-13 02:31:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 2807. [2021-11-13 02:31:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.6190306486101211) internal successors, (4543), 2806 states have internal predecessors, (4543), 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) [2021-11-13 02:31:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4543 transitions. [2021-11-13 02:31:38,611 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4543 transitions. Word has length 392 [2021-11-13 02:31:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:31:38,612 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 4543 transitions. [2021-11-13 02:31:38,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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) [2021-11-13 02:31:38,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4543 transitions. [2021-11-13 02:31:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-13 02:31:38,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:31:38,625 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2021-11-13 02:31:38,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-13 02:31:38,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:31:38,840 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:31:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:31:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash -729601146, now seen corresponding path program 1 times [2021-11-13 02:31:38,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:31:38,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117699583] [2021-11-13 02:31:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:31:38,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:31:38,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:31:38,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:31:38,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:31:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:31:47,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-13 02:31:47,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:33:39,793 WARN L227 SmtUtils]: Spent 1.86m on a formula simplification. DAG size of input: 66 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 02:33:39,794 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-13 02:33:39,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 4167 treesize of output 4178 [2021-11-13 02:33:39,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 4162 treesize of output 4126 [2021-11-13 02:33:39,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:33:39,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5264 [2021-11-13 02:33:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:39,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 5526 treesize of output 5242 [2021-11-13 02:33:40,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:33:40,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 4321 treesize of output 4094 [2021-11-13 02:33:40,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4406 treesize of output 4276 [2021-11-13 02:33:40,157 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-11-13 02:33:40,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:33:40,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117699583] [2021-11-13 02:33:40,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-13 02:33:40,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1907116699] [2021-11-13 02:33:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:33:40,174 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:33:40,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:33:40,180 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:33:40,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f901207-8653-47fb-869e-368005425818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process