./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:07:11,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:07:11,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:07:11,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:07:11,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:07:11,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:07:11,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:07:11,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:07:11,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:07:11,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:07:11,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:07:11,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:07:11,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:07:11,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:07:11,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:07:11,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:07:11,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:07:11,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:07:11,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:07:11,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:07:11,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:07:11,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:07:11,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:07:11,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:07:11,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:07:11,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:07:11,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:07:11,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:07:11,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:07:11,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:07:11,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:07:11,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:07:11,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:07:11,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:07:11,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:07:11,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:07:11,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:07:11,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:07:11,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:07:11,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:07:11,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:07:11,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 12:07:11,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:07:11,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:07:11,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:07:11,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:07:11,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:07:11,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:07:11,834 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:07:11,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:07:11,834 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:07:11,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:07:11,834 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:07:11,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:07:11,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:07:11,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:07:11,835 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:07:11,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:07:11,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:07:11,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:07:11,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:07:11,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:07:11,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:07:11,836 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:07:11,836 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:07:11,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:07:11,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:07:11,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:07:11,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:07:11,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:07:11,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:07:11,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:07:11,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:07:11,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:07:11,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:07:11,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:07:11,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:07:11,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2022-12-14 12:07:11,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:07:12,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:07:12,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:07:12,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:07:12,018 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:07:12,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-12-14 12:07:14,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:07:14,805 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:07:14,806 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-12-14 12:07:14,814 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data/cd0067e1f/22a457795cd14c84987371f7460b17df/FLAGc3f712706 [2022-12-14 12:07:14,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data/cd0067e1f/22a457795cd14c84987371f7460b17df [2022-12-14 12:07:14,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:07:14,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:07:14,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:07:14,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:07:14,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:07:14,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:07:14" (1/1) ... [2022-12-14 12:07:14,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1984cf09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:14, skipping insertion in model container [2022-12-14 12:07:14,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:07:14" (1/1) ... [2022-12-14 12:07:14,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:07:14,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:07:15,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:07:15,121 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 12:07:15,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c1b7e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:15, skipping insertion in model container [2022-12-14 12:07:15,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:07:15,122 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 12:07:15,123 INFO L158 Benchmark]: Toolchain (without parser) took 294.27ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 83.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 12:07:15,123 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:07:15,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.64ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 83.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 12:07:15,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.64ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 83.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:07:16,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:07:16,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:07:16,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:07:16,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:07:16,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:07:16,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:07:16,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:07:16,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:07:16,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:07:16,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:07:16,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:07:16,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:07:16,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:07:16,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:07:16,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:07:16,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:07:16,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:07:16,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:07:16,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:07:16,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:07:16,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:07:16,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:07:16,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:07:16,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:07:16,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:07:16,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:07:16,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:07:16,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:07:16,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:07:16,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:07:16,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:07:16,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:07:16,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:07:16,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:07:16,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:07:16,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:07:16,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:07:16,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:07:16,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:07:16,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:07:16,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 12:07:16,588 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:07:16,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:07:16,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:07:16,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:07:16,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:07:16,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:07:16,590 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:07:16,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:07:16,590 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:07:16,591 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:07:16,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:07:16,591 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:07:16,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:07:16,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:07:16,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:07:16,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:07:16,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:07:16,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:07:16,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:07:16,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:07:16,593 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:07:16,593 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:07:16,594 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:07:16,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:07:16,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:07:16,594 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 12:07:16,594 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 12:07:16,595 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:07:16,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:07:16,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:07:16,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 12:07:16,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:07:16,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:07:16,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:07:16,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:07:16,596 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 12:07:16,596 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:16,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:07:16,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 12:07:16,597 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_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2022-12-14 12:07:16,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:07:16,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:07:16,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:07:16,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:07:16,823 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:07:16,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-12-14 12:07:19,391 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:07:19,600 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:07:19,600 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2022-12-14 12:07:19,612 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data/a5e86a3e4/ff17247047334e34b0dcb9cfa94363f0/FLAGf6a7167d5 [2022-12-14 12:07:19,626 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/data/a5e86a3e4/ff17247047334e34b0dcb9cfa94363f0 [2022-12-14 12:07:19,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:07:19,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:07:19,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:07:19,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:07:19,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:07:19,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:07:19" (1/1) ... [2022-12-14 12:07:19,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18dfb1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:19, skipping insertion in model container [2022-12-14 12:07:19,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:07:19" (1/1) ... [2022-12-14 12:07:19,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:07:19,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:07:19,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:07:19,985 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 12:07:19,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:07:20,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:07:20,046 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:07:20,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:07:20,123 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:07:20,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20 WrapperNode [2022-12-14 12:07:20,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:07:20,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:07:20,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:07:20,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:07:20,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,157 INFO L138 Inliner]: procedures = 167, calls = 79, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 88 [2022-12-14 12:07:20,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:07:20,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:07:20,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:07:20,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:07:20,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:07:20,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:07:20,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:07:20,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:07:20,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (1/1) ... [2022-12-14 12:07:20,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:07:20,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:07:20,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:07:20,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:07:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-14 12:07:20,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-14 12:07:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 12:07:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:07:20,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 12:07:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 12:07:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:07:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 12:07:20,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:07:20,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:07:20,339 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:07:20,341 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:07:20,586 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:07:20,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:07:20,592 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 12:07:20,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:07:20 BoogieIcfgContainer [2022-12-14 12:07:20,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:07:20,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:07:20,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:07:20,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:07:20,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:07:19" (1/3) ... [2022-12-14 12:07:20,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d11ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:07:20, skipping insertion in model container [2022-12-14 12:07:20,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:07:20" (2/3) ... [2022-12-14 12:07:20,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d11ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:07:20, skipping insertion in model container [2022-12-14 12:07:20,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:07:20" (3/3) ... [2022-12-14 12:07:20,602 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-2.i [2022-12-14 12:07:20,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:07:20,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-14 12:07:20,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:07:20,668 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bbec9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:07:20,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-14 12:07:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.775) internal successors, (71), 60 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:07:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:07:20,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:20,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:20,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2113718075, now seen corresponding path program 1 times [2022-12-14 12:07:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:20,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484798213] [2022-12-14 12:07:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:20,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:20,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:20,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:20,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 12:07:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:20,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:07:20,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:20,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:07:20,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:20,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484798213] [2022-12-14 12:07:20,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484798213] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:20,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:07:20,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:07:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510174712] [2022-12-14 12:07:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:20,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:07:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:07:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:07:20,874 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.775) internal successors, (71), 60 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:20,976 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2022-12-14 12:07:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:07:20,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 12:07:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:20,985 INFO L225 Difference]: With dead ends: 122 [2022-12-14 12:07:20,985 INFO L226 Difference]: Without dead ends: 118 [2022-12-14 12:07:20,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:07:20,990 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 59 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:20,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 247 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:07:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-14 12:07:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 66. [2022-12-14 12:07:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.619047619047619) internal successors, (68), 61 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:07:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-12-14 12:07:21,023 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 11 [2022-12-14 12:07:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:21,024 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-12-14 12:07:21,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-12-14 12:07:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:07:21,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:21,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:21,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:07:21,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:21,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:21,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2113616981, now seen corresponding path program 1 times [2022-12-14 12:07:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:21,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605010262] [2022-12-14 12:07:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:21,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:21,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:21,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:21,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 12:07:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:21,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:07:21,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:21,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:07:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:21,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:07:21,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:21,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605010262] [2022-12-14 12:07:21,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605010262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:21,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:07:21,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:07:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881016452] [2022-12-14 12:07:21,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:21,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:07:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:07:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:07:21,365 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:21,491 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2022-12-14 12:07:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:07:21,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 12:07:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:21,492 INFO L225 Difference]: With dead ends: 90 [2022-12-14 12:07:21,492 INFO L226 Difference]: Without dead ends: 90 [2022-12-14 12:07:21,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:07:21,493 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:21,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 172 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:07:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-14 12:07:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2022-12-14 12:07:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 72 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:07:21,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2022-12-14 12:07:21,498 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 11 [2022-12-14 12:07:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:21,498 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2022-12-14 12:07:21,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2022-12-14 12:07:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:07:21,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:21,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:21,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 12:07:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:21,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2113616982, now seen corresponding path program 1 times [2022-12-14 12:07:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:21,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891747278] [2022-12-14 12:07:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:21,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:21,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:21,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 12:07:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:21,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:07:21,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:21,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:21,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:07:21,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:21,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891747278] [2022-12-14 12:07:21,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891747278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:21,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:07:21,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 12:07:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408723207] [2022-12-14 12:07:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:07:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:07:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:07:21,907 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:22,219 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2022-12-14 12:07:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:07:22,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 12:07:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:22,220 INFO L225 Difference]: With dead ends: 114 [2022-12-14 12:07:22,221 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 12:07:22,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:07:22,222 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 100 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:22,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 365 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:07:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 12:07:22,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2022-12-14 12:07:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 1.5753424657534247) internal successors, (115), 92 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:07:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2022-12-14 12:07:22,231 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 11 [2022-12-14 12:07:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:22,231 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2022-12-14 12:07:22,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2022-12-14 12:07:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:07:22,232 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:22,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:22,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-14 12:07:22,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:22,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:22,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1293745540, now seen corresponding path program 1 times [2022-12-14 12:07:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:22,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387954994] [2022-12-14 12:07:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:22,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:22,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:22,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:22,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 12:07:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:22,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:07:22,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:22,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:07:22,645 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:22,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387954994] [2022-12-14 12:07:22,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387954994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:22,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:07:22,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:07:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507997985] [2022-12-14 12:07:22,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:22,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:07:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:22,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:07:22,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:07:22,647 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:22,747 INFO L93 Difference]: Finished difference Result 141 states and 170 transitions. [2022-12-14 12:07:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:07:22,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 12:07:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:22,749 INFO L225 Difference]: With dead ends: 141 [2022-12-14 12:07:22,749 INFO L226 Difference]: Without dead ends: 139 [2022-12-14 12:07:22,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:07:22,750 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 47 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:22,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 192 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:07:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-14 12:07:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2022-12-14 12:07:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 92 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:07:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2022-12-14 12:07:22,760 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 11 [2022-12-14 12:07:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:22,760 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2022-12-14 12:07:22,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2022-12-14 12:07:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:07:22,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:22,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:22,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 12:07:22,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:22,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1293846634, now seen corresponding path program 1 times [2022-12-14 12:07:22,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:22,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537817968] [2022-12-14 12:07:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:22,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:22,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:22,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:22,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 12:07:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:23,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:07:23,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:23,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:07:23,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:23,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537817968] [2022-12-14 12:07:23,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537817968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:23,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:07:23,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:07:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412043556] [2022-12-14 12:07:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:23,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:07:23,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:07:23,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:07:23,106 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:23,138 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2022-12-14 12:07:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:07:23,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 12:07:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:23,139 INFO L225 Difference]: With dead ends: 83 [2022-12-14 12:07:23,139 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 12:07:23,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:07:23,140 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:23,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:07:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 12:07:23,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-14 12:07:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 77 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:07:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2022-12-14 12:07:23,144 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 11 [2022-12-14 12:07:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:23,145 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2022-12-14 12:07:23,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2022-12-14 12:07:23,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 12:07:23,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:23,145 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:23,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 12:07:23,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:23,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1752049815, now seen corresponding path program 1 times [2022-12-14 12:07:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:23,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250322404] [2022-12-14 12:07:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:23,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:23,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:23,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:23,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 12:07:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:23,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 12:07:23,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:23,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:23,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:24,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250322404] [2022-12-14 12:07:24,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250322404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [563142070] [2022-12-14 12:07:24,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:24,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:24,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:07:24,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:07:24,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 12:07:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:24,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 12:07:24,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:24,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:24,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:24,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [563142070] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097557350] [2022-12-14 12:07:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:24,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:24,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:07:24,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:07:24,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 12:07:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:24,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 12:07:24,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:24,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:24,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:24,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097557350] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:24,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:07:24,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2022-12-14 12:07:24,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046649420] [2022-12-14 12:07:24,988 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:07:24,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 12:07:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 12:07:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-14 12:07:24,989 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:07:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:26,459 INFO L93 Difference]: Finished difference Result 165 states and 189 transitions. [2022-12-14 12:07:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 12:07:26,459 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2022-12-14 12:07:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:26,460 INFO L225 Difference]: With dead ends: 165 [2022-12-14 12:07:26,460 INFO L226 Difference]: Without dead ends: 165 [2022-12-14 12:07:26,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-12-14 12:07:26,461 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 466 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 417 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 12:07:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-14 12:07:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 90. [2022-12-14 12:07:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 86 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:07:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2022-12-14 12:07:26,465 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 14 [2022-12-14 12:07:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:26,466 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2022-12-14 12:07:26,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:07:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2022-12-14 12:07:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 12:07:26,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:26,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:26,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 12:07:26,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 12:07:26,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-12-14 12:07:27,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:27,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:27,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1183774854, now seen corresponding path program 1 times [2022-12-14 12:07:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:27,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303404058] [2022-12-14 12:07:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:27,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:27,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:27,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 12:07:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:27,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:07:27,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:27,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:27,244 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:27,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303404058] [2022-12-14 12:07:27,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303404058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:27,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [169959857] [2022-12-14 12:07:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:27,244 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:07:27,245 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:07:27,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 12:07:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:27,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:07:27,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:27,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:27,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [169959857] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:27,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821202840] [2022-12-14 12:07:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:27,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:27,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:07:27,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:07:27,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 12:07:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:27,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:07:27,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:27,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:07:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:07:27,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:07:27,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821202840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:27,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-12-14 12:07:27,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 6, 6] total 14 [2022-12-14 12:07:27,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786525291] [2022-12-14 12:07:27,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:27,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:07:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:07:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:07:27,500 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:27,638 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2022-12-14 12:07:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:07:27,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-12-14 12:07:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:27,640 INFO L225 Difference]: With dead ends: 100 [2022-12-14 12:07:27,640 INFO L226 Difference]: Without dead ends: 100 [2022-12-14 12:07:27,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-14 12:07:27,641 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 33 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:27,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 198 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:07:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-12-14 12:07:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2022-12-14 12:07:27,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 87 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:07:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-12-14 12:07:27,646 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 22 [2022-12-14 12:07:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:27,647 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-12-14 12:07:27,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-12-14 12:07:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 12:07:27,647 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:27,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:27,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 12:07:27,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-12-14 12:07:28,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 12:07:28,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:28,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1183774855, now seen corresponding path program 1 times [2022-12-14 12:07:28,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:28,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566980239] [2022-12-14 12:07:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:28,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:28,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:28,255 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:28,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 12:07:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:28,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:07:28,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:28,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:28,486 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566980239] [2022-12-14 12:07:28,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566980239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [490077028] [2022-12-14 12:07:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:28,486 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:28,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:07:28,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:07:28,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-14 12:07:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:28,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:07:28,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:28,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:28,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:28,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [490077028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:28,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233549550] [2022-12-14 12:07:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:28,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:28,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:07:28,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:07:28,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 12:07:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:07:28,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:07:28,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:07:28,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233549550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:07:28,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-12-14 12:07:28,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 6, 6] total 11 [2022-12-14 12:07:28,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566789150] [2022-12-14 12:07:28,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:07:28,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:07:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:07:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:07:28,698 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:28,738 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2022-12-14 12:07:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:07:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-12-14 12:07:28,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:28,740 INFO L225 Difference]: With dead ends: 120 [2022-12-14 12:07:28,740 INFO L226 Difference]: Without dead ends: 120 [2022-12-14 12:07:28,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:07:28,741 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 144 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:28,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 121 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:07:28,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-14 12:07:28,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 75. [2022-12-14 12:07:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.5) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:07:28,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2022-12-14 12:07:28,743 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 22 [2022-12-14 12:07:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:28,744 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2022-12-14 12:07:28,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 12:07:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2022-12-14 12:07:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 12:07:28,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:28,744 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:28,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-12-14 12:07:28,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 12:07:29,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 12:07:29,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:29,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:29,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1595807082, now seen corresponding path program 2 times [2022-12-14 12:07:29,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:29,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777355112] [2022-12-14 12:07:29,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:07:29,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:29,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:29,351 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:29,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 12:07:29,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:07:29,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:07:29,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 12:07:29,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:29,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:29,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:31,157 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:31,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777355112] [2022-12-14 12:07:31,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777355112] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:31,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1284366887] [2022-12-14 12:07:31,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:07:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:31,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:07:31,159 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:07:31,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-12-14 12:07:31,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:07:31,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:07:31,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 12:07:31,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:31,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:31,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:37,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1284366887] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:37,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645966058] [2022-12-14 12:07:37,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:07:37,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:37,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:07:37,117 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:07:37,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 12:07:37,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:07:37,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:07:37,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 12:07:37,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:37,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:37,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:39,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645966058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:39,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:07:39,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11, 11, 11, 12] total 47 [2022-12-14 12:07:39,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231499832] [2022-12-14 12:07:39,840 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:07:39,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 12:07:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 12:07:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1903, Unknown=2, NotChecked=0, Total=2256 [2022-12-14 12:07:39,843 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 48 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 12:07:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:45,569 INFO L93 Difference]: Finished difference Result 111 states and 135 transitions. [2022-12-14 12:07:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 12:07:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 23 [2022-12-14 12:07:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:45,570 INFO L225 Difference]: With dead ends: 111 [2022-12-14 12:07:45,571 INFO L226 Difference]: Without dead ends: 111 [2022-12-14 12:07:45,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=675, Invalid=3105, Unknown=2, NotChecked=0, Total=3782 [2022-12-14 12:07:45,572 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 439 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:45,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1026 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 12:07:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-14 12:07:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2022-12-14 12:07:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 89 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:07:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2022-12-14 12:07:45,578 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 23 [2022-12-14 12:07:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:45,578 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2022-12-14 12:07:45,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 12:07:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2022-12-14 12:07:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 12:07:45,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:45,579 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:45,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-12-14 12:07:45,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-14 12:07:45,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 12:07:46,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:46,182 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash -846552599, now seen corresponding path program 1 times [2022-12-14 12:07:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:46,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850625065] [2022-12-14 12:07:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:46,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:46,186 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 12:07:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:46,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:07:46,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:46,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 12:07:46,567 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:46,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850625065] [2022-12-14 12:07:46,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850625065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:46,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [165274813] [2022-12-14 12:07:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:46,568 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:46,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:07:46,569 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:07:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 12:07:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:46,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:07:46,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:46,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 12:07:46,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [165274813] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:46,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001702599] [2022-12-14 12:07:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:07:46,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:07:46,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:07:46,769 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:07:46,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 12:07:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:07:46,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 12:07:46,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:46,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:47,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2022-12-14 12:07:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:47,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 12:07:48,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001702599] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:48,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:07:48,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 14, 13] total 34 [2022-12-14 12:07:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298984043] [2022-12-14 12:07:48,383 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:07:48,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 12:07:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:07:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 12:07:48,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=836, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 12:07:48,386 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 32 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 12:07:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:07:51,203 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2022-12-14 12:07:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 12:07:51,204 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 32 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2022-12-14 12:07:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:07:51,204 INFO L225 Difference]: With dead ends: 149 [2022-12-14 12:07:51,204 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 12:07:51,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 12:07:51,205 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 448 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:07:51,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 766 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 12:07:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 12:07:51,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 98. [2022-12-14 12:07:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 94 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:07:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-12-14 12:07:51,208 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 35 [2022-12-14 12:07:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:07:51,208 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-12-14 12:07:51,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 32 states have internal predecessors, (86), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 12:07:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-12-14 12:07:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 12:07:51,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:07:51,209 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:07:51,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 12:07:51,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 12:07:51,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 12:07:51,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:51,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:07:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:07:51,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1755014154, now seen corresponding path program 3 times [2022-12-14 12:07:51,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:07:51,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960618628] [2022-12-14 12:07:51,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:07:51,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:07:51,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:07:51,816 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:07:51,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-14 12:07:52,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-14 12:07:52,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:07:52,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 12:07:52,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:52,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:52,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:07:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:55,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:07:55,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960618628] [2022-12-14 12:07:55,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960618628] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:07:55,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1401340152] [2022-12-14 12:07:55,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:07:55,395 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:07:55,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:07:55,395 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:07:55,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-14 12:07:55,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-14 12:07:55,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:07:55,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 12:07:55,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:07:55,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:07:55,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 13 [2022-12-14 12:07:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:07:56,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:06,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1401340152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:06,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686149617] [2022-12-14 12:08:06,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:08:06,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:06,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:08:06,538 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:08:06,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 12:08:08,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-14 12:08:08,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:08:09,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 12:08:09,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:09,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:08:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:09,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:23,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686149617] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:23,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:08:23,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 19, 24, 18, 21] total 76 [2022-12-14 12:08:23,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350091756] [2022-12-14 12:08:23,376 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:08:23,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-12-14 12:08:23,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-12-14 12:08:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=4905, Unknown=0, NotChecked=0, Total=5700 [2022-12-14 12:08:23,380 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 76 states, 72 states have (on average 2.111111111111111) internal successors, (152), 72 states have internal predecessors, (152), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:08:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:34,749 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-12-14 12:08:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 12:08:34,749 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 72 states have (on average 2.111111111111111) internal successors, (152), 72 states have internal predecessors, (152), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2022-12-14 12:08:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:34,750 INFO L225 Difference]: With dead ends: 94 [2022-12-14 12:08:34,750 INFO L226 Difference]: Without dead ends: 94 [2022-12-14 12:08:34,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=842, Invalid=5638, Unknown=0, NotChecked=0, Total=6480 [2022-12-14 12:08:34,751 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 711 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:34,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 908 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 12:08:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-14 12:08:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2022-12-14 12:08:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.318840579710145) internal successors, (91), 87 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:08:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2022-12-14 12:08:34,754 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 41 [2022-12-14 12:08:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:34,754 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2022-12-14 12:08:34,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 72 states have (on average 2.111111111111111) internal successors, (152), 72 states have internal predecessors, (152), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:08:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2022-12-14 12:08:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 12:08:34,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:34,754 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:34,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-12-14 12:08:34,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 12:08:35,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-12-14 12:08:35,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:35,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1745592900, now seen corresponding path program 2 times [2022-12-14 12:08:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:35,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788639131] [2022-12-14 12:08:35,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:08:35,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:35,361 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:35,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-14 12:08:35,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:08:35,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:08:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:08:35,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:35,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:35,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:08:35,846 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_570 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_570) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-12-14 12:08:35,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:08:35,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 12:08:35,865 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 12:08:35,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 12:08:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-14 12:08:35,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:36,244 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:08:36,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788639131] [2022-12-14 12:08:36,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788639131] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:08:36,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [731973140] [2022-12-14 12:08:36,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:08:36,245 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:36,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:08:36,245 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:08:36,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-12-14 12:08:36,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:08:36,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:08:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:08:36,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:36,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:08:36,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:36,715 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_640 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_640) |c_#length|)))) is different from true [2022-12-14 12:08:36,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:08:36,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 12:08:36,737 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 12:08:36,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 12:08:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-14 12:08:36,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:36,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [731973140] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:08:36,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249343988] [2022-12-14 12:08:36,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:08:36,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:36,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:08:36,901 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:08:36,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-14 12:08:36,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:08:36,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:08:36,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:08:37,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:37,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:37,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:08:37,192 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_710 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_710) |c_#length|)))) is different from true [2022-12-14 12:08:37,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:08:37,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 12:08:37,215 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 12:08:37,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 12:08:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-14 12:08:37,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:39,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249343988] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:08:39,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:08:39,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-14 12:08:39,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731135986] [2022-12-14 12:08:39,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:08:39,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 12:08:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 12:08:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=110, Unknown=3, NotChecked=66, Total=210 [2022-12-14 12:08:39,439 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:08:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:40,217 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2022-12-14 12:08:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 12:08:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-12-14 12:08:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:40,219 INFO L225 Difference]: With dead ends: 225 [2022-12-14 12:08:40,219 INFO L226 Difference]: Without dead ends: 225 [2022-12-14 12:08:40,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=280, Unknown=3, NotChecked=108, Total=462 [2022-12-14 12:08:40,219 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 242 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:40,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 478 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 503 Invalid, 0 Unknown, 507 Unchecked, 0.6s Time] [2022-12-14 12:08:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-12-14 12:08:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 126. [2022-12-14 12:08:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.4215686274509804) internal successors, (145), 119 states have internal predecessors, (145), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 12:08:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2022-12-14 12:08:40,223 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 50 [2022-12-14 12:08:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:40,223 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2022-12-14 12:08:40,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:08:40,223 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2022-12-14 12:08:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 12:08:40,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:40,224 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:40,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-12-14 12:08:40,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-12-14 12:08:40,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-12-14 12:08:40,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:40,826 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:40,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1745592901, now seen corresponding path program 1 times [2022-12-14 12:08:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:40,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673508346] [2022-12-14 12:08:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:40,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:40,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:40,832 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:40,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-14 12:08:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:40,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 12:08:40,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:40,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:41,047 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-12-14 12:08:41,062 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 12:08:41,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 12:08:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-14 12:08:41,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:41,232 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:08:41,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673508346] [2022-12-14 12:08:41,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673508346] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:41,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1604128066] [2022-12-14 12:08:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:41,233 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:41,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:08:41,234 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:08:41,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-12-14 12:08:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:41,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:08:41,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:41,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:41,530 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 12:08:41,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 12:08:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-14 12:08:41,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:41,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1604128066] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:41,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580759465] [2022-12-14 12:08:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:41,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:41,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:08:41,680 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:08:41,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-14 12:08:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:41,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 12:08:41,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:41,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:41,841 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_915 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_915) |c_#valid|)))) is different from true [2022-12-14 12:08:41,866 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 12:08:41,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 12:08:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-14 12:08:41,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:42,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580759465] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:42,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:08:42,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7, 6, 7, 6] total 9 [2022-12-14 12:08:42,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688717414] [2022-12-14 12:08:42,034 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:08:42,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 12:08:42,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 12:08:42,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=44, Unknown=2, NotChecked=26, Total=90 [2022-12-14 12:08:42,035 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:08:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:42,275 INFO L93 Difference]: Finished difference Result 172 states and 206 transitions. [2022-12-14 12:08:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:08:42,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-12-14 12:08:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:42,277 INFO L225 Difference]: With dead ends: 172 [2022-12-14 12:08:42,277 INFO L226 Difference]: Without dead ends: 172 [2022-12-14 12:08:42,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 276 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=70, Unknown=2, NotChecked=34, Total=132 [2022-12-14 12:08:42,278 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 101 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:42,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 208 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 155 Invalid, 0 Unknown, 188 Unchecked, 0.2s Time] [2022-12-14 12:08:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-12-14 12:08:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 118. [2022-12-14 12:08:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 111 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 12:08:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2022-12-14 12:08:42,283 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 50 [2022-12-14 12:08:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:42,284 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2022-12-14 12:08:42,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 12:08:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2022-12-14 12:08:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 12:08:42,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:42,284 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:42,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-12-14 12:08:42,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2022-12-14 12:08:42,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-14 12:08:42,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:42,886 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1817385993, now seen corresponding path program 1 times [2022-12-14 12:08:42,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:42,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367171224] [2022-12-14 12:08:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:42,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:42,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:42,890 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:42,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-12-14 12:08:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:43,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:08:43,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:43,024 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-12-14 12:08:43,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:08:43,024 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:08:43,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367171224] [2022-12-14 12:08:43,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367171224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:08:43,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:08:43,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:08:43,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17139689] [2022-12-14 12:08:43,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:08:43,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:08:43,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:08:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:08:43,026 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 12:08:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:43,070 INFO L93 Difference]: Finished difference Result 155 states and 180 transitions. [2022-12-14 12:08:43,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:08:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-12-14 12:08:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:43,072 INFO L225 Difference]: With dead ends: 155 [2022-12-14 12:08:43,072 INFO L226 Difference]: Without dead ends: 155 [2022-12-14 12:08:43,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:08:43,073 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:43,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 246 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:08:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-14 12:08:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2022-12-14 12:08:43,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 112 states have internal predecessors, (128), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 12:08:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2022-12-14 12:08:43,077 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 52 [2022-12-14 12:08:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:43,077 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2022-12-14 12:08:43,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 12:08:43,077 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2022-12-14 12:08:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 12:08:43,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:43,078 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:43,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-12-14 12:08:43,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:43,279 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash -734770968, now seen corresponding path program 1 times [2022-12-14 12:08:43,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:43,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603626701] [2022-12-14 12:08:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:43,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:43,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:43,282 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:43,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-12-14 12:08:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:43,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:08:43,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-14 12:08:43,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:08:43,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:08:43,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603626701] [2022-12-14 12:08:43,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603626701] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:08:43,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:08:43,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:08:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586484993] [2022-12-14 12:08:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:08:43,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:08:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:08:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:08:43,699 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:08:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:43,756 INFO L93 Difference]: Finished difference Result 152 states and 173 transitions. [2022-12-14 12:08:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:08:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2022-12-14 12:08:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:43,758 INFO L225 Difference]: With dead ends: 152 [2022-12-14 12:08:43,758 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 12:08:43,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:08:43,759 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 51 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:43,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 192 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:08:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 12:08:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2022-12-14 12:08:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.3) internal successors, (130), 114 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 12:08:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2022-12-14 12:08:43,764 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 52 [2022-12-14 12:08:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:43,764 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2022-12-14 12:08:43,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 12:08:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2022-12-14 12:08:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 12:08:43,765 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:43,765 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:43,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-12-14 12:08:43,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:43,966 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1885083517, now seen corresponding path program 1 times [2022-12-14 12:08:43,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:43,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282966230] [2022-12-14 12:08:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:43,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:43,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:43,971 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:43,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-12-14 12:08:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:44,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 12:08:44,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:44,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:44,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:44,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:08:44,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282966230] [2022-12-14 12:08:44,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282966230] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:44,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2047047267] [2022-12-14 12:08:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:44,398 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:44,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:08:44,399 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:08:44,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-12-14 12:08:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:44,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 12:08:44,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:44,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:44,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:44,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2047047267] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:44,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079389864] [2022-12-14 12:08:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:44,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:08:44,771 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:08:44,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-14 12:08:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:44,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 12:08:44,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:44,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 12:08:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:44,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:45,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079389864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:45,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:08:45,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 7 [2022-12-14 12:08:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712691037] [2022-12-14 12:08:45,039 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:08:45,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:08:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:45,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:08:45,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:08:45,041 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:08:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:45,275 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2022-12-14 12:08:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:08:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-12-14 12:08:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:45,277 INFO L225 Difference]: With dead ends: 140 [2022-12-14 12:08:45,277 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 12:08:45,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 316 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:08:45,277 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:45,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 251 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:08:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 12:08:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2022-12-14 12:08:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 101 states have (on average 1.306930693069307) internal successors, (132), 115 states have internal predecessors, (132), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 12:08:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2022-12-14 12:08:45,281 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 55 [2022-12-14 12:08:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:45,281 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2022-12-14 12:08:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 12:08:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2022-12-14 12:08:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 12:08:45,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:45,282 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:45,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-12-14 12:08:45,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2022-12-14 12:08:45,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-12-14 12:08:45,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:45,884 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1885083518, now seen corresponding path program 1 times [2022-12-14 12:08:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:45,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122403210] [2022-12-14 12:08:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:45,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:45,888 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:45,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-12-14 12:08:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:46,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 12:08:46,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:46,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:08:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:46,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:47,226 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:08:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122403210] [2022-12-14 12:08:47,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122403210] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1045529868] [2022-12-14 12:08:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:47,226 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:08:47,227 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:08:47,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-12-14 12:08:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:47,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 12:08:47,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:47,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:08:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:47,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:48,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1045529868] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:48,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863378231] [2022-12-14 12:08:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:48,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:08:48,575 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:08:48,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-14 12:08:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:48,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 12:08:48,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:48,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 12:08:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:48,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-14 12:08:49,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863378231] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:49,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:08:49,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2022-12-14 12:08:49,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741233766] [2022-12-14 12:08:49,910 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:08:49,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 12:08:49,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 12:08:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-14 12:08:49,912 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:08:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:51,136 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2022-12-14 12:08:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 12:08:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2022-12-14 12:08:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:51,137 INFO L225 Difference]: With dead ends: 193 [2022-12-14 12:08:51,137 INFO L226 Difference]: Without dead ends: 193 [2022-12-14 12:08:51,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-12-14 12:08:51,138 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 293 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:51,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 630 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 12:08:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-12-14 12:08:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2022-12-14 12:08:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.4015748031496063) internal successors, (178), 141 states have internal predecessors, (178), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 12:08:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 189 transitions. [2022-12-14 12:08:51,141 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 189 transitions. Word has length 55 [2022-12-14 12:08:51,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:51,141 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 189 transitions. [2022-12-14 12:08:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:08:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 189 transitions. [2022-12-14 12:08:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:08:51,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:51,141 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:51,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-12-14 12:08:51,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2022-12-14 12:08:51,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-12-14 12:08:51,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:51,744 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:51,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:51,745 INFO L85 PathProgramCache]: Analyzing trace with hash 992549453, now seen corresponding path program 1 times [2022-12-14 12:08:51,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:51,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382032360] [2022-12-14 12:08:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:51,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:51,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:51,747 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:51,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-12-14 12:08:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:51,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:08:51,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-14 12:08:52,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-14 12:08:52,126 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:08:52,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382032360] [2022-12-14 12:08:52,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382032360] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:52,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905917083] [2022-12-14 12:08:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:52,126 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:52,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:08:52,127 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:08:52,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-12-14 12:08:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:52,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:08:52,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-14 12:08:52,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-14 12:08:52,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1905917083] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:52,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130057737] [2022-12-14 12:08:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:52,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:08:52,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:08:52,453 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:08:52,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-14 12:08:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:52,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:08:52,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-14 12:08:52,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:08:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-14 12:08:52,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130057737] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:08:52,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:08:52,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 12:08:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074634340] [2022-12-14 12:08:52,694 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:08:52,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:08:52,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:08:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:08:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:08:52,695 INFO L87 Difference]: Start difference. First operand 149 states and 189 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:08:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:08:52,826 INFO L93 Difference]: Finished difference Result 422 states and 555 transitions. [2022-12-14 12:08:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:08:52,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2022-12-14 12:08:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:08:52,828 INFO L225 Difference]: With dead ends: 422 [2022-12-14 12:08:52,828 INFO L226 Difference]: Without dead ends: 422 [2022-12-14 12:08:52,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:08:52,829 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 460 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:08:52,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 285 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:08:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-12-14 12:08:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 181. [2022-12-14 12:08:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 155 states have (on average 1.3806451612903226) internal successors, (214), 167 states have internal predecessors, (214), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 12:08:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 237 transitions. [2022-12-14 12:08:52,836 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 237 transitions. Word has length 56 [2022-12-14 12:08:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:08:52,836 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 237 transitions. [2022-12-14 12:08:52,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 12:08:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 237 transitions. [2022-12-14 12:08:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:08:52,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:08:52,837 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:08:52,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-12-14 12:08:53,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-12-14 12:08:53,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-12-14 12:08:53,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:53,440 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-12-14 12:08:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:08:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1691953052, now seen corresponding path program 1 times [2022-12-14 12:08:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:08:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667307448] [2022-12-14 12:08:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:08:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:08:53,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:08:53,445 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 12:08:53,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7111050b-f2ba-47d0-b9b4-f68af469de14/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-12-14 12:08:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:08:53,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-14 12:08:53,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:08:53,823 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 11 [2022-12-14 12:08:53,860 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:53,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:53,886 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:53,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:53,913 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:53,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:53,941 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:53,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:53,970 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:53,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:54,009 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:54,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:54,040 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:54,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:54,074 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 12:08:54,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 12:08:54,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 12:08:54,211 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 7 [2022-12-14 12:08:54,228 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:08:54,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:09:00,295 INFO L350 Elim1Store]: Elim1 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 86 treesize of output 84